224 files changed, 340 insertions, 8590 deletions
diff --git a/arch/um/Kconfig.char b/arch/um/Kconfig.char
index 70dabd1e0652..b9d7c4276682 100644
--- a/arch/um/Kconfig.char
+++ b/arch/um/Kconfig.char
@@ -1,5 +1,4 @@
+menu "UML Character Devices"
-menu "Character Devices"
 config STDERR_CONSOLE
        bool "stderr console"
@@ -105,92 +104,6 @@ config SSL_CHAN
          this if you expect the UML that you build to be run in environments
          which don't have a set of /dev/pty* devices.
-config UNIX98_PTYS
-        bool "Unix98 PTY support"
-        help
-          A pseudo terminal (PTY) is a software device consisting of two
-          halves: a master and a slave. The slave device behaves identical to
-          a physical terminal; the master device is used by a process to
-          read data from and write data to the slave, thereby emulating a
-          terminal. Typical programs for the master side are telnet servers
-          and xterms.
-          Linux has traditionally used the BSD-like names /dev/ptyxx for
-          masters and /dev/ttyxx for slaves of pseudo terminals. This scheme
-          has a number of problems. The GNU C library glibc 2.1 and later,
-          however, supports the Unix98 naming standard: in order to acquire a
-          pseudo terminal, a process opens /dev/ptmx; the number of the pseudo
-          terminal is then made available to the process and the pseudo
-          terminal slave can be accessed as /dev/pts/<number>. What was
-          traditionally /dev/ttyp2 will then be /dev/pts/2, for example.
-          All modern Linux systems use the Unix98 ptys.  Say Y unless
-          you're on an embedded system and want to conserve memory.
-config LEGACY_PTYS
-        bool "Legacy (BSD) PTY support"
-        default y
-        help
-          A pseudo terminal (PTY) is a software device consisting of two
-          halves: a master and a slave. The slave device behaves identical to
-          a physical terminal; the master device is used by a process to
-          read data from and write data to the slave, thereby emulating a
-          terminal. Typical programs for the master side are telnet servers
-          and xterms.
-          Linux has traditionally used the BSD-like names /dev/ptyxx
-          for masters and /dev/ttyxx for slaves of pseudo
-          terminals. This scheme has a number of problems, including
-          security.  This option enables these legacy devices; on most
-          systems, it is safe to say N.
-config RAW_DRIVER
-        tristate "RAW driver (/dev/raw/rawN)"
-        depends on BLOCK
-        help
-          The raw driver permits block devices to be bound to /dev/raw/rawN.
-          Once bound, I/O against /dev/raw/rawN uses efficient zero-copy I/O.
-          See the raw(8) manpage for more details.
-          Applications should preferably open the device (eg /dev/hda1)
-          with the O_DIRECT flag.
-config MAX_RAW_DEVS
-        int "Maximum number of RAW devices to support (1-8192)"
-        depends on RAW_DRIVER
-        default "256"
-        help
-          The maximum number of RAW devices that are supported.
-          Default is 256. Increase this number in case you need lots of
-          raw devices.
-config LEGACY_PTY_COUNT
-        int "Maximum number of legacy PTY in use"
-        depends on LEGACY_PTYS
-        default "256"
-        help
-          The maximum number of legacy PTYs that can be used at any one time.
-          The default is 256, and should be more than enough.  Embedded
-          systems may want to reduce this to save memory.
-          When not in use, each legacy PTY occupies 12 bytes on 32-bit
-          architectures and 24 bytes on 64-bit architectures.
-config WATCHDOG
-        bool "Watchdog Timer Support"
-config WATCHDOG_NOWAYOUT
-        bool "Disable watchdog shutdown on close"
-        depends on WATCHDOG
-config SOFT_WATCHDOG
-        tristate "Software Watchdog"
-        depends on WATCHDOG
-config UML_WATCHDOG
-        tristate "UML watchdog"
-        depends on WATCHDOG
 config UML_SOUND
        tristate "Sound support"
        help
@@ -211,29 +124,4 @@ config HOSTAUDIO
        tristate
        default UML_SOUND
-#It is selected elsewhere, so kconfig would warn without this.
-config HW_RANDOM
-        tristate
-        default n
-config UML_RANDOM
-        tristate "Hardware random number generator"
-        help
-          This option enables UML's "hardware" random number generator.  It
-          attaches itself to the host's /dev/random, supplying as much entropy
-          as the host has, rather than the small amount the UML gets from its
-          own drivers.  It registers itself as a standard hardware random number
-          generator, major 10, minor 183, and the canonical device name is
-          /dev/hwrng.
-          The way to make use of this is to install the rng-tools package
-          (check your distro, or download from
-          http://sourceforge.net/projects/gkernel/).  rngd periodically reads
-          /dev/hwrng and injects the entropy into /dev/random.
-config MMAPPER
-        tristate "iomem emulation driver"
-        help
-          This driver allows a host file to be used as emulated IO memory inside
-          UML.
 endmenu
diff --git a/arch/um/Kconfig.rest b/arch/um/Kconfig.rest
index 0ccad0ff6d6e..567eb5fc21df 100644
--- a/arch/um/Kconfig.rest
+++ b/arch/um/Kconfig.rest
@@ -2,20 +2,14 @@ source "init/Kconfig"
 source "kernel/Kconfig.freezer"
-source "drivers/block/Kconfig"
 source "arch/um/Kconfig.char"
-source "drivers/base/Kconfig"
+source "drivers/Kconfig"
 source "net/Kconfig"
 source "arch/um/Kconfig.net"
-source "drivers/net/Kconfig"
-source "drivers/connector/Kconfig"
 source "fs/Kconfig"
 source "security/Kconfig"
@@ -24,19 +18,4 @@ source "crypto/Kconfig"
 source "lib/Kconfig"
-source "drivers/scsi/Kconfig"
-source "drivers/md/Kconfig"
-if BROKEN
-        source "drivers/mtd/Kconfig"
-endif
-source "drivers/leds/Kconfig"
-#This is just to shut up some Kconfig warnings, so no prompt.
-config INPUT
-        tristate
-        default n
 source "arch/um/Kconfig.debug"
diff --git a/arch/um/Kconfig.um b/arch/um/Kconfig.um
index b5e675e370c6..70fd690964e4 100644
--- a/arch/um/Kconfig.um
+++ b/arch/um/Kconfig.um
@@ -148,5 +148,11 @@ config KERNEL_STACK_ORDER
          be 1 << order pages.  The default is OK unless you're running Valgrind
          on UML, in which case, set this to 3.
+config MMAPPER
+        tristate "iomem emulation driver"
+        help
+          This driver allows a host file to be used as emulated IO memory inside
+          UML.
 config NO_DMA
        def_bool y
diff --git a/arch/um/Kconfig.x86 b/arch/um/Kconfig.x86
deleted file mode 100644
index 21bebe63df66..000000000000
--- a/arch/um/Kconfig.x86
+++ /dev/null
@@ -1,70 +0,0 @@
-mainmenu "User Mode Linux/$SUBARCH $KERNELVERSION Kernel Configuration"
-source "arch/um/Kconfig.common"
-menu "UML-specific options"
-menu "Host processor type and features"
-config CMPXCHG_LOCAL
-        bool
-        default n
-config CMPXCHG_DOUBLE
-        bool
-        default n
-source "arch/x86/Kconfig.cpu"
-endmenu
-config UML_X86
-        def_bool y
-        select GENERIC_FIND_FIRST_BIT
-config 64BIT
-        bool
-        default SUBARCH = "x86_64"
-config X86_32
-        def_bool !64BIT
-        select HAVE_AOUT
-config X86_64
-        def_bool 64BIT
-config RWSEM_XCHGADD_ALGORITHM
-        def_bool X86_XADD && 64BIT
-config RWSEM_GENERIC_SPINLOCK
-        def_bool !RWSEM_XCHGADD_ALGORITHM
-config 3_LEVEL_PGTABLES
-        bool "Three-level pagetables (EXPERIMENTAL)" if !64BIT
-        default 64BIT
-        depends on EXPERIMENTAL
-        help
-        Three-level pagetables will let UML have more than 4G of physical
-        memory.  All the memory that can't be mapped directly will be treated
-        as high memory.
-        However, this it experimental on 32-bit architectures, so if unsure say
-        N (on x86-64 it's automatically enabled, instead, as it's safe there).
-config ARCH_HAS_SC_SIGNALS
-        def_bool !64BIT
-config ARCH_REUSE_HOST_VSYSCALL_AREA
-        def_bool !64BIT
-config SMP_BROKEN
-        def_bool 64BIT
-config GENERIC_HWEIGHT
-        def_bool y
-source "arch/um/Kconfig.um"
-endmenu
-source "arch/um/Kconfig.rest"
diff --git a/arch/um/Makefile b/arch/um/Makefile
index c0f712cc7c5f..7730af6ec13f 100644
--- a/arch/um/Makefile
+++ b/arch/um/Makefile
@@ -20,15 +20,27 @@ core-y			+= $(ARCH_DIR)/kernel/		\
 MODE_INCLUDE    += -I$(srctree)/$(ARCH_DIR)/include/shared/skas
+HEADER_ARCH     := $(SUBARCH)
+# Additional ARCH settings for x86
+ifeq ($(SUBARCH),i386)
+        HEADER_ARCH := x86
+endif
+ifeq ($(SUBARCH),x86_64)
+        HEADER_ARCH := x86
+endif
+HOST_DIR := arch/$(HEADER_ARCH)
 include $(srctree)/$(ARCH_DIR)/Makefile-skas
+include $(srctree)/$(HOST_DIR)/Makefile.um
+core-y += $(HOST_DIR)/um/
 SHARED_HEADERS  := $(ARCH_DIR)/include/shared
 ARCH_INCLUDE    := -I$(srctree)/$(SHARED_HEADERS)
-ARCH_INCLUDE    += -I$(srctree)/$(ARCH_DIR)/sys-$(SUBARCH)/shared
+ARCH_INCLUDE    += -I$(srctree)/$(HOST_DIR)/um/shared
-ifneq ($(KBUILD_SRC),)
+KBUILD_CPPFLAGS += -I$(srctree)/$(HOST_DIR)/um
-ARCH_INCLUDE    += -I$(SHARED_HEADERS)
-endif
-KBUILD_CPPFLAGS += -I$(srctree)/$(ARCH_DIR)/sys-$(SUBARCH)
 # -Dvmap=kernel_vmap prevents anything from referencing the libpcap.o symbol so
 # named - it's a common symbol in libpcap, so we get a binary which crashes.
@@ -47,14 +59,12 @@ KBUILD_AFLAGS += $(ARCH_INCLUDE)
 USER_CFLAGS = $(patsubst $(KERNEL_DEFINES),,$(patsubst -D__KERNEL__,,\
        $(patsubst -I%,,$(KBUILD_CFLAGS)))) $(ARCH_INCLUDE) $(MODE_INCLUDE) \
-        $(filter -I%,$(CFLAGS)) -D_FILE_OFFSET_BITS=64
+        $(filter -I%,$(CFLAGS)) -D_FILE_OFFSET_BITS=64 -idirafter include
-include $(srctree)/$(ARCH_DIR)/Makefile-$(SUBARCH)
 #This will adjust *FLAGS accordingly to the platform.
 include $(srctree)/$(ARCH_DIR)/Makefile-os-$(OS)
-KBUILD_CPPFLAGS += -I$(srctree)/arch/$(HEADER_ARCH)/include
+KBUILD_CPPFLAGS += -I$(srctree)/$(HOST_DIR)/include
 # -Derrno=kernel_errno - This turns all kernel references to errno into
 # kernel_errno to separate them from the libc errno.  This allows -fno-common
@@ -84,10 +94,9 @@ define archhelp
  echo '                   find in the kernel root.'
 endef
-KBUILD_KCONFIG := arch/um/Kconfig.$(HEADER_ARCH)
+KBUILD_KCONFIG := $(HOST_DIR)/um/Kconfig
-archprepare: $(SHARED_HEADERS)/user_constants.h
+archprepare: include/generated/user_constants.h
-archprepare: $(SHARED_HEADERS)/kern_constants.h
 LINK-$(CONFIG_LD_SCRIPT_STATIC) += -static
 LINK-$(CONFIG_LD_SCRIPT_DYN) += -Wl,-rpath,/lib
@@ -118,9 +127,7 @@ endef
 # When cleaning we don't include .config, so we don't include
 # TT or skas makefiles and don't clean skas_ptregs.h.
-CLEAN_FILES += linux x.i gmon.out \
+CLEAN_FILES += linux x.i gmon.out
-        $(SHARED_HEADERS)/user_constants.h \
-        $(SHARED_HEADERS)/kern_constants.h
 archclean:
        @find . \( -name '*.bb' -o -name '*.bbg' -o -name '*.da' \
@@ -128,8 +135,8 @@ archclean:
 # Generated files
-$(ARCH_DIR)/sys-$(SUBARCH)/user-offsets.s: FORCE
+$(HOST_DIR)/um/user-offsets.s: FORCE
-        $(Q)$(MAKE) $(build)=$(ARCH_DIR)/sys-$(SUBARCH) $@
+        $(Q)$(MAKE) $(build)=$(HOST_DIR)/um $@
 define filechk_gen-asm-offsets
        (set -e; \
@@ -144,11 +151,7 @@ define filechk_gen-asm-offsets
         echo ""; )
 endef
-$(SHARED_HEADERS)/user_constants.h: $(ARCH_DIR)/sys-$(SUBARCH)/user-offsets.s
+include/generated/user_constants.h: $(HOST_DIR)/um/user-offsets.s
        $(call filechk,gen-asm-offsets)
-$(SHARED_HEADERS)/kern_constants.h:
+export SUBARCH USER_CFLAGS CFLAGS_NO_HARDENING OS DEV_NULL_PATH
-        $(Q)mkdir -p $(dir $@)
-        $(Q)echo '#include "../../../../include/generated/asm-offsets.h"' >$@
-export SUBARCH USER_CFLAGS CFLAGS_NO_HARDENING OS HEADER_ARCH DEV_NULL_PATH
diff --git a/arch/um/Makefile-i386 b/arch/um/Makefile-i386
deleted file mode 100644
index 302cbe504543..000000000000
--- a/arch/um/Makefile-i386
+++ /dev/null
@@ -1,42 +0,0 @@
-core-y += arch/um/sys-i386/ arch/x86/crypto/
-TOP_ADDR := $(CONFIG_TOP_ADDR)
-START := 0x8048000
-LDFLAGS                 += -m elf_i386
-ELF_ARCH                := $(SUBARCH)
-ELF_FORMAT              := elf32-$(SUBARCH)
-OBJCOPYFLAGS            := -O binary -R .note -R .comment -S
-HEADER_ARCH             := x86
-CHECKFLAGS      += -D__i386__
-ifeq ("$(origin SUBARCH)", "command line")
-ifneq ("$(shell uname -m | sed -e s/i.86/i386/)", "$(SUBARCH)")
-KBUILD_CFLAGS           += $(call cc-option,-m32)
-KBUILD_AFLAGS           += $(call cc-option,-m32)
-LINK-y                  += $(call cc-option,-m32)
-UML_OBJCOPYFLAGS        += -F $(ELF_FORMAT)
-export LDFLAGS HOSTCFLAGS HOSTLDFLAGS UML_OBJCOPYFLAGS
-endif
-endif
-# First of all, tune CFLAGS for the specific CPU. This actually sets cflags-y.
-include $(srctree)/arch/x86/Makefile_32.cpu
-# prevent gcc from keeping the stack 16 byte aligned. Taken from i386.
-cflags-y += $(call cc-option,-mpreferred-stack-boundary=2)
-# Prevent sprintf in nfsd from being converted to strcpy and resulting in
-# an unresolved reference.
-cflags-y += -ffreestanding
-# Disable unit-at-a-time mode on pre-gcc-4.0 compilers, it makes gcc use
-# a lot more stack due to the lack of sharing of stacklots.  Also, gcc
-# 4.3.0 needs -funit-at-a-time for extern inline functions.
-KBUILD_CFLAGS += $(shell if [ $(call cc-version) -lt 0400 ] ; then \
-                        echo $(call cc-option,-fno-unit-at-a-time); \
-                        else echo $(call cc-option,-funit-at-a-time); fi ;)
-KBUILD_CFLAGS += $(cflags-y)
diff --git a/arch/um/Makefile-x86_64 b/arch/um/Makefile-x86_64
deleted file mode 100644
index a9cd7e77a7ab..000000000000
--- a/arch/um/Makefile-x86_64
+++ /dev/null
@@ -1,26 +0,0 @@
-# Copyright 2003 - 2004 Pathscale, Inc
-# Released under the GPL
-core-y += arch/um/sys-x86_64/ arch/x86/crypto/
-START := 0x60000000
-_extra_flags_ = -fno-builtin -m64
-KBUILD_CFLAGS += $(_extra_flags_)
-CHECKFLAGS  += -m64 -D__x86_64__
-KBUILD_AFLAGS += -m64
-LDFLAGS += -m elf_x86_64
-KBUILD_CPPFLAGS += -m64
-ELF_ARCH := i386:x86-64
-ELF_FORMAT := elf64-x86-64
-HEADER_ARCH := x86
-# Not on all 64-bit distros /lib is a symlink to /lib64. PLD is an example.
-LINK-$(CONFIG_LD_SCRIPT_DYN) += -Wl,-rpath,/lib64
-LINK-y += -m64
-# Do unit-at-a-time unconditionally on x86_64, following the host
-KBUILD_CFLAGS += $(call cc-option,-funit-at-a-time)
diff --git a/arch/um/include/shared/chan_kern.h b/arch/um/drivers/chan.h
index 1e651457e049..8df0fd9024dc 100644
--- a/arch/um/include/shared/chan_kern.h
+++ b/arch/um/drivers/chan.h
@@ -6,9 +6,9 @@
 #ifndef __CHAN_KERN_H__
 #define __CHAN_KERN_H__
-#include "linux/tty.h"
+#include <linux/tty.h>
-#include "linux/list.h"
+#include <linux/list.h>
-#include "linux/console.h"
+#include <linux/console.h>
 #include "chan_user.h"
 #include "line.h"
diff --git a/arch/um/drivers/chan_kern.c b/arch/um/drivers/chan_kern.c
index d4191fe1cede..420e2c800799 100644
--- a/arch/um/drivers/chan_kern.c
+++ b/arch/um/drivers/chan_kern.c
@@ -6,7 +6,7 @@
 #include <linux/slab.h>
 #include <linux/tty.h>
 #include <linux/tty_flip.h>
-#include "chan_kern.h"
+#include "chan.h"
 #include "os.h"
 #ifdef CONFIG_NOCONFIG_CHAN
@@ -358,11 +358,11 @@ int chan_window_size(struct list_head *chans, unsigned short *rows_out,
        return 0;
 }
-static void free_one_chan(struct chan *chan, int delay_free_irq)
+static void free_one_chan(struct chan *chan)
 {
        list_del(&chan->list);
-        close_one_chan(chan, delay_free_irq);
+        close_one_chan(chan, 0);
        if (chan->ops->free != NULL)
                (*chan->ops->free)(chan->data);
@@ -372,14 +372,14 @@ static void free_one_chan(struct chan *chan, int delay_free_irq)
        kfree(chan);
 }
-static void free_chan(struct list_head *chans, int delay_free_irq)
+static void free_chan(struct list_head *chans)
 {
        struct list_head *ele, *next;
        struct chan *chan;
        list_for_each_safe(ele, next, chans) {
                chan = list_entry(ele, struct chan, list);
-                free_one_chan(chan, delay_free_irq);
+                free_one_chan(chan);
        }
 }
@@ -547,7 +547,7 @@ int parse_chan_pair(char *str, struct line *line, int device,
        char *in, *out;
        if (!list_empty(chans)) {
-                free_chan(chans, 0);
+                free_chan(chans);
                INIT_LIST_HEAD(chans);
        }
diff --git a/arch/um/drivers/chan_user.c b/arch/um/drivers/chan_user.c
index cfeb3f4a44af..f180813ce2c7 100644
--- a/arch/um/drivers/chan_user.c
+++ b/arch/um/drivers/chan_user.c
@@ -11,10 +11,8 @@
 #include <termios.h>
 #include <sys/ioctl.h>
 #include "chan_user.h"
-#include "kern_constants.h"
 #include "os.h"
 #include "um_malloc.h"
-#include "user.h"
 void generic_close(int fd, void *unused)
 {
@@ -283,7 +281,12 @@ void register_winch(int fd, struct tty_struct *tty)
                return;
        pid = tcgetpgrp(fd);
-        if (!is_skas_winch(pid, fd, tty) && (pid == -1)) {
+        if (is_skas_winch(pid, fd, tty)) {
+                register_winch_irq(-1, fd, -1, tty, 0);
+                return;
+        }
+        if (pid == -1) {
                thread = winch_tramp(fd, tty, &thread_fd, &stack);
                if (thread < 0)
                        return;
diff --git a/arch/um/include/shared/chan_user.h b/arch/um/drivers/chan_user.h
index 9b9ced85b703..9b9ced85b703 100644
--- a/arch/um/include/shared/chan_user.h
+++ b/arch/um/drivers/chan_user.h
diff --git a/arch/um/drivers/cow_sys.h b/arch/um/drivers/cow_sys.h
index f5701fd2ef90..7f2ed0b8824a 100644
--- a/arch/um/drivers/cow_sys.h
+++ b/arch/um/drivers/cow_sys.h
@@ -3,7 +3,6 @@
 #include "kern_util.h"
 #include "os.h"
-#include "user.h"
 #include "um_malloc.h"
 static inline void *cow_malloc(int size)
diff --git a/arch/um/drivers/daemon_user.c b/arch/um/drivers/daemon_user.c
index f8e85e0bdace..a4fd7bc14af7 100644
--- a/arch/um/drivers/daemon_user.c
+++ b/arch/um/drivers/daemon_user.c
@@ -17,7 +17,6 @@
 #include "net_user.h"
 #include "os.h"
 #include "um_malloc.h"
-#include "user.h"
 enum request_type { REQ_NEW_CONTROL };
diff --git a/arch/um/drivers/fd.c b/arch/um/drivers/fd.c
index f5a981a16240..5b81d2574415 100644
--- a/arch/um/drivers/fd.c
+++ b/arch/um/drivers/fd.c
@@ -9,10 +9,8 @@
 #include <errno.h>
 #include <termios.h>
 #include "chan_user.h"
-#include "kern_constants.h"
 #include "os.h"
 #include "um_malloc.h"
-#include "user.h"
 struct fd_chan {
        int fd;
diff --git a/arch/um/drivers/harddog_user.c b/arch/um/drivers/harddog_user.c
index 84dce3fc590c..0345d6206d40 100644
--- a/arch/um/drivers/harddog_user.c
+++ b/arch/um/drivers/harddog_user.c
@@ -7,7 +7,6 @@
 #include <unistd.h>
 #include <errno.h>
 #include "os.h"
-#include "user.h"
 struct dog_data {
        int stdin;
diff --git a/arch/um/drivers/line.c b/arch/um/drivers/line.c
index 364c8a15c4c3..c1cf2206b84b 100644
--- a/arch/um/drivers/line.c
+++ b/arch/um/drivers/line.c
@@ -7,7 +7,7 @@
 #include "linux/kd.h"
 #include "linux/sched.h"
 #include "linux/slab.h"
-#include "chan_kern.h"
+#include "chan.h"
 #include "irq_kern.h"
 #include "irq_user.h"
 #include "kern_util.h"
diff --git a/arch/um/include/shared/line.h b/arch/um/drivers/line.h
index 63df3ca02ac2..63df3ca02ac2 100644
--- a/arch/um/include/shared/line.h
+++ b/arch/um/drivers/line.h
diff --git a/arch/um/include/shared/mconsole.h b/arch/um/drivers/mconsole.h
index c139ae1d6826..c139ae1d6826 100644
--- a/arch/um/include/shared/mconsole.h
+++ b/arch/um/drivers/mconsole.h
diff --git a/arch/um/include/shared/mconsole_kern.h b/arch/um/drivers/mconsole_kern.h
index d2fe07e78958..d2fe07e78958 100644
--- a/arch/um/include/shared/mconsole_kern.h
+++ b/arch/um/drivers/mconsole_kern.h
diff --git a/arch/um/drivers/mconsole_user.c b/arch/um/drivers/mconsole_user.c
index f8cf4c8bedef..99209826adb1 100644
--- a/arch/um/drivers/mconsole_user.c
+++ b/arch/um/drivers/mconsole_user.c
@@ -10,9 +10,7 @@
 #include <sys/socket.h>
 #include <sys/uio.h>
 #include <sys/un.h>
-#include "kern_constants.h"
 #include "mconsole.h"
-#include "user.h"
 static struct mconsole_command commands[] = {
        /*
diff --git a/arch/um/drivers/net_user.c b/arch/um/drivers/net_user.c
index 520118888f16..05090c37fa84 100644
--- a/arch/um/drivers/net_user.c
+++ b/arch/um/drivers/net_user.c
@@ -12,10 +12,8 @@
 #include <sys/socket.h>
 #include <sys/wait.h>
 #include "net_user.h"
-#include "kern_constants.h"
 #include "os.h"
 #include "um_malloc.h"
-#include "user.h"
 int tap_open_common(void *dev, char *gate_addr)
 {
diff --git a/arch/um/drivers/pcap_user.c b/arch/um/drivers/pcap_user.c
index 5f903587d69e..702a75b190ee 100644
--- a/arch/um/drivers/pcap_user.c
+++ b/arch/um/drivers/pcap_user.c
@@ -9,9 +9,7 @@
 #include <asm/types.h>
 #include "net_user.h"
 #include "pcap_user.h"
-#include "kern_constants.h"
 #include "um_malloc.h"
-#include "user.h"
 #define PCAP_FD(p) (*(int *)(p))
diff --git a/arch/um/drivers/port_user.c b/arch/um/drivers/port_user.c
index b49bf56a56aa..7b010b76ddf0 100644
--- a/arch/um/drivers/port_user.c
+++ b/arch/um/drivers/port_user.c
@@ -10,11 +10,9 @@
 #include <unistd.h>
 #include <netinet/in.h>
 #include "chan_user.h"
-#include "kern_constants.h"
 #include "os.h"
 #include "port.h"
 #include "um_malloc.h"
-#include "user.h"
 struct port_chan {
        int raw;
diff --git a/arch/um/drivers/pty.c b/arch/um/drivers/pty.c
index 1113911dcb2b..cff2b75d31fd 100644
--- a/arch/um/drivers/pty.c
+++ b/arch/um/drivers/pty.c
@@ -12,10 +12,8 @@
 #include <termios.h>
 #include <sys/stat.h>
 #include "chan_user.h"
-#include "kern_constants.h"
 #include "os.h"
 #include "um_malloc.h"
-#include "user.h"
 struct pty_chan {
        void (*announce)(char *dev_name, int dev);
diff --git a/arch/um/drivers/slip_user.c b/arch/um/drivers/slip_user.c
index cbacfc4e63e6..932b4d69bec2 100644
--- a/arch/um/drivers/slip_user.c
+++ b/arch/um/drivers/slip_user.c
@@ -11,12 +11,10 @@
 #include <string.h>
 #include <sys/termios.h>
 #include <sys/wait.h>
-#include "kern_constants.h"
 #include "net_user.h"
 #include "os.h"
 #include "slip.h"
 #include "um_malloc.h"
-#include "user.h"
 static int slip_user_init(void *data, void *dev)
 {
diff --git a/arch/um/drivers/slirp_user.c b/arch/um/drivers/slirp_user.c
index a0ada8fec72a..db4adb639ff8 100644
--- a/arch/um/drivers/slirp_user.c
+++ b/arch/um/drivers/slirp_user.c
@@ -7,11 +7,9 @@
 #include <errno.h>
 #include <string.h>
 #include <sys/wait.h>
-#include "kern_constants.h"
 #include "net_user.h"
 #include "os.h"
 #include "slirp.h"
-#include "user.h"
 static int slirp_user_init(void *data, void *dev)
 {
diff --git a/arch/um/drivers/ssl.c b/arch/um/drivers/ssl.c
index f1786e64607f..9d8c20af6f80 100644
--- a/arch/um/drivers/ssl.c
+++ b/arch/um/drivers/ssl.c
@@ -12,10 +12,8 @@
 #include "linux/console.h"
 #include "asm/termbits.h"
 #include "asm/irq.h"
-#include "line.h"
 #include "ssl.h"
-#include "chan_kern.h"
+#include "chan.h"
-#include "kern.h"
 #include "init.h"
 #include "irq_user.h"
 #include "mconsole_kern.h"
diff --git a/arch/um/drivers/stdio_console.c b/arch/um/drivers/stdio_console.c
index 49266f6108c4..088776f01908 100644
--- a/arch/um/drivers/stdio_console.c
+++ b/arch/um/drivers/stdio_console.c
@@ -20,8 +20,7 @@
 #include "asm/current.h"
 #include "asm/irq.h"
 #include "stdio_console.h"
-#include "line.h"
+#include "chan.h"
-#include "chan_kern.h"
 #include "irq_user.h"
 #include "mconsole_kern.h"
 #include "init.h"
diff --git a/arch/um/drivers/tty.c b/arch/um/drivers/tty.c
index 495858a090e4..a97391f9ec54 100644
--- a/arch/um/drivers/tty.c
+++ b/arch/um/drivers/tty.c
@@ -7,10 +7,8 @@
 #include <fcntl.h>
 #include <termios.h>
 #include "chan_user.h"
-#include "kern_constants.h"
 #include "os.h"
 #include "um_malloc.h"
-#include "user.h"
 struct tty_chan {
        char *dev;
diff --git a/arch/um/drivers/ubd_kern.c b/arch/um/drivers/ubd_kern.c
index 620f5b70957d..944453a3ec99 100644
--- a/arch/um/drivers/ubd_kern.c
+++ b/arch/um/drivers/ubd_kern.c
@@ -46,7 +46,6 @@
 #include "asm/tlbflush.h"
 #include "mem_user.h"
 #include "kern_util.h"
-#include "kern.h"
 #include "mconsole_kern.h"
 #include "init.h"
 #include "irq_user.h"
@@ -54,7 +53,6 @@
 #include "ubd_user.h"
 #include "os.h"
 #include "mem.h"
-#include "mem_kern.h"
 #include "cow.h"
 enum ubd_req { UBD_READ, UBD_WRITE };
@@ -513,8 +511,37 @@ __uml_exitcall(kill_io_thread);
 static inline int ubd_file_size(struct ubd *ubd_dev, __u64 *size_out)
 {
        char *file;
+        int fd;
+        int err;
+        __u32 version;
+        __u32 align;
+        char *backing_file;
+        time_t mtime;
+        unsigned long long size;
+        int sector_size;
+        int bitmap_offset;
+        if (ubd_dev->file && ubd_dev->cow.file) {
+                file = ubd_dev->cow.file;
+                goto out;
+        }
-        file = ubd_dev->cow.file ? ubd_dev->cow.file : ubd_dev->file;
+        fd = os_open_file(ubd_dev->file, global_openflags, 0);
+        if (fd < 0)
+                return fd;
+        err = read_cow_header(file_reader, &fd, &version, &backing_file, \
+                &mtime, &size, &sector_size, &align, &bitmap_offset);
+        os_close_file(fd);
+        if(err == -EINVAL)
+                file = ubd_dev->file;
+        else
+                file = backing_file;
+out:
        return os_file_size(file, size_out);
 }
diff --git a/arch/um/drivers/ubd_user.c b/arch/um/drivers/ubd_user.c
index b591bb9c41dd..007b94d97726 100644
--- a/arch/um/drivers/ubd_user.c
+++ b/arch/um/drivers/ubd_user.c
@@ -16,7 +16,6 @@
 #include <sys/mman.h>
 #include <sys/param.h>
 #include "asm/types.h"
-#include "user.h"
 #include "ubd_user.h"
 #include "os.h"
 #include "cow.h"
diff --git a/arch/um/include/shared/ubd_user.h b/arch/um/drivers/ubd_user.h
index 3845051f1b10..3845051f1b10 100644
--- a/arch/um/include/shared/ubd_user.h
+++ b/arch/um/drivers/ubd_user.h
diff --git a/arch/um/drivers/umcast_user.c b/arch/um/drivers/umcast_user.c
index 59c56fd6f52a..010fa2d849ec 100644
--- a/arch/um/drivers/umcast_user.c
+++ b/arch/um/drivers/umcast_user.c
@@ -15,11 +15,9 @@
 #include <unistd.h>
 #include <errno.h>
 #include <netinet/in.h>
-#include "kern_constants.h"
 #include "umcast.h"
 #include "net_user.h"
 #include "um_malloc.h"
-#include "user.h"
 static struct sockaddr_in *new_addr(char *addr, unsigned short port)
 {
diff --git a/arch/um/drivers/vde_user.c b/arch/um/drivers/vde_user.c
index c5c43253e6ce..b8c286748d3d 100644
--- a/arch/um/drivers/vde_user.c
+++ b/arch/um/drivers/vde_user.c
@@ -6,10 +6,8 @@
 #include <stddef.h>
 #include <errno.h>
 #include <libvdeplug.h>
-#include "kern_constants.h"
 #include "net_user.h"
 #include "um_malloc.h"
-#include "user.h"
 #include "vde.h"
 static int vde_user_init(void *data, void *dev)
diff --git a/arch/um/drivers/xterm.c b/arch/um/drivers/xterm.c
index 2e1de5728604..969110e56487 100644
--- a/arch/um/drivers/xterm.c
+++ b/arch/um/drivers/xterm.c
@@ -11,10 +11,8 @@
 #include <string.h>
 #include <termios.h>
 #include "chan_user.h"
-#include "kern_constants.h"
 #include "os.h"
 #include "um_malloc.h"
-#include "user.h"
 #include "xterm.h"
 struct xterm_chan {
diff --git a/arch/um/include/asm/Kbuild b/arch/um/include/asm/Kbuild
new file mode 100644
index 000000000000..451f4517b334
--- /dev/null
+++ b/arch/um/include/asm/Kbuild
@@ -0,0 +1,3 @@
+generic-y += bug.h cputime.h device.h emergency-restart.h futex.h hardirq.h
+generic-y += hw_irq.h irq_regs.h kdebug.h percpu.h sections.h topology.h xor.h
+generic-y += ftrace.h
diff --git a/arch/um/include/asm/apic.h b/arch/um/include/asm/apic.h
deleted file mode 100644
index 876dee84ab11..000000000000
--- a/arch/um/include/asm/apic.h
+++ /dev/null
@@ -1,4 +0,0 @@
-#ifndef __UM_APIC_H
-#define __UM_APIC_H
-#endif
diff --git a/arch/um/include/asm/arch_hweight.h b/arch/um/include/asm/arch_hweight.h
deleted file mode 100644
index c656cf443f4a..000000000000
--- a/arch/um/include/asm/arch_hweight.h
+++ /dev/null
@@ -1,6 +0,0 @@
-#ifndef _ASM_UM_HWEIGHT_H
-#define _ASM_UM_HWEIGHT_H
-#include <asm-generic/bitops/arch_hweight.h>
-#endif
diff --git a/arch/um/include/asm/bug.h b/arch/um/include/asm/bug.h
deleted file mode 100644
index 9e33b864c359..000000000000
--- a/arch/um/include/asm/bug.h
+++ /dev/null
@@ -1,6 +0,0 @@
-#ifndef __UM_BUG_H
-#define __UM_BUG_H
-#include <asm-generic/bug.h>
-#endif
diff --git a/arch/um/include/asm/checksum.h b/arch/um/include/asm/checksum.h
deleted file mode 100644
index 5b501361e361..000000000000
--- a/arch/um/include/asm/checksum.h
+++ /dev/null
@@ -1,6 +0,0 @@
-#ifndef __UM_CHECKSUM_H
-#define __UM_CHECKSUM_H
-#include "sysdep/checksum.h"
-#endif
diff --git a/arch/um/include/asm/cputime.h b/arch/um/include/asm/cputime.h
deleted file mode 100644
index c84acbadfa2f..000000000000
--- a/arch/um/include/asm/cputime.h
+++ /dev/null
@@ -1,6 +0,0 @@
-#ifndef __UM_CPUTIME_H
-#define __UM_CPUTIME_H
-#include <asm-generic/cputime.h>
-#endif /* __UM_CPUTIME_H */
diff --git a/arch/um/include/asm/desc.h b/arch/um/include/asm/desc.h
deleted file mode 100644
index 4ec34a51b62c..000000000000
--- a/arch/um/include/asm/desc.h
+++ /dev/null
@@ -1,16 +0,0 @@
-#ifndef __UM_DESC_H
-#define __UM_DESC_H
-/* Taken from asm-i386/desc.h, it's the only thing we need. The rest wouldn't
- * compile, and has never been used. */
-#define LDT_empty(info) (\
-        (info)->base_addr       == 0    && \
-        (info)->limit           == 0    && \
-        (info)->contents        == 0    && \
-        (info)->read_exec_only  == 1    && \
-        (info)->seg_32bit       == 0    && \
-        (info)->limit_in_pages  == 0    && \
-        (info)->seg_not_present == 1    && \
-        (info)->useable         == 0    )
-#endif
diff --git a/arch/um/include/asm/device.h b/arch/um/include/asm/device.h
deleted file mode 100644
index d8f9872b0e2d..000000000000
--- a/arch/um/include/asm/device.h
+++ /dev/null
@@ -1,7 +0,0 @@
-/*
- * Arch specific extensions to struct device
- *
- * This file is released under the GPLv2
- */
-#include <asm-generic/device.h>
diff --git a/arch/um/include/asm/emergency-restart.h b/arch/um/include/asm/emergency-restart.h
deleted file mode 100644
index 108d8c48e42e..000000000000
--- a/arch/um/include/asm/emergency-restart.h
+++ /dev/null
@@ -1,6 +0,0 @@
-#ifndef _ASM_EMERGENCY_RESTART_H
-#define _ASM_EMERGENCY_RESTART_H
-#include <asm-generic/emergency-restart.h>
-#endif /* _ASM_EMERGENCY_RESTART_H */
diff --git a/arch/um/include/asm/ftrace.h b/arch/um/include/asm/ftrace.h
deleted file mode 100644
index 40a8c178f10d..000000000000
--- a/arch/um/include/asm/ftrace.h
+++ /dev/null
@@ -1 +0,0 @@
-/* empty */
diff --git a/arch/um/include/asm/futex.h b/arch/um/include/asm/futex.h
deleted file mode 100644
index 6a332a9f099c..000000000000
--- a/arch/um/include/asm/futex.h
+++ /dev/null
@@ -1,6 +0,0 @@
-#ifndef _ASM_FUTEX_H
-#define _ASM_FUTEX_H
-#include <asm-generic/futex.h>
-#endif
diff --git a/arch/um/include/asm/hardirq.h b/arch/um/include/asm/hardirq.h
deleted file mode 100644
index fb3c05a0cbbf..000000000000
--- a/arch/um/include/asm/hardirq.h
+++ /dev/null
@@ -1 +0,0 @@
-#include <asm-generic/hardirq.h>
diff --git a/arch/um/include/asm/hw_irq.h b/arch/um/include/asm/hw_irq.h
deleted file mode 100644
index 1cf84cf5f21a..000000000000
--- a/arch/um/include/asm/hw_irq.h
+++ /dev/null
@@ -1,7 +0,0 @@
-#ifndef _ASM_UM_HW_IRQ_H
-#define _ASM_UM_HW_IRQ_H
-#include "asm/irq.h"
-#include "asm/archparam.h"
-#endif
diff --git a/arch/um/include/asm/irq_regs.h b/arch/um/include/asm/irq_regs.h
deleted file mode 100644
index 3dd9c0b70270..000000000000
--- a/arch/um/include/asm/irq_regs.h
+++ /dev/null
@@ -1 +0,0 @@
-#include <asm-generic/irq_regs.h>
diff --git a/arch/um/include/asm/irq_vectors.h b/arch/um/include/asm/irq_vectors.h
deleted file mode 100644
index 272a81e0ce14..000000000000
--- a/arch/um/include/asm/irq_vectors.h
+++ /dev/null
@@ -1,10 +0,0 @@
-/* 
- * Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
- * Licensed under the GPL
- */
-#ifndef __UM_IRQ_VECTORS_H
-#define __UM_IRQ_VECTORS_H
-#endif
diff --git a/arch/um/include/asm/irqflags.h b/arch/um/include/asm/irqflags.h
index 659b9abdfdba..c780d8a16773 100644
--- a/arch/um/include/asm/irqflags.h
+++ b/arch/um/include/asm/irqflags.h
@@ -1,6 +1,42 @@
 #ifndef __UM_IRQFLAGS_H
 #define __UM_IRQFLAGS_H
-/* Empty for now */
+extern int get_signals(void);
+extern int set_signals(int enable);
+extern void block_signals(void);
+extern void unblock_signals(void);
+static inline unsigned long arch_local_save_flags(void)
+{
+        return get_signals();
+}
+static inline void arch_local_irq_restore(unsigned long flags)
+{
+        set_signals(flags);
+}
+static inline void arch_local_irq_enable(void)
+{
+        unblock_signals();
+}
+static inline void arch_local_irq_disable(void)
+{
+        block_signals();
+}
+static inline unsigned long arch_local_irq_save(void)
+{
+        unsigned long flags;
+        flags = arch_local_save_flags();
+        arch_local_irq_disable();
+        return flags;
+}
+static inline bool arch_irqs_disabled(void)
+{
+        return arch_local_save_flags() == 0;
+}
 #endif
diff --git a/arch/um/include/asm/kdebug.h b/arch/um/include/asm/kdebug.h
deleted file mode 100644
index 6ece1b037665..000000000000
--- a/arch/um/include/asm/kdebug.h
+++ /dev/null
@@ -1 +0,0 @@
-#include <asm-generic/kdebug.h>
diff --git a/arch/um/include/asm/mmu.h b/arch/um/include/asm/mmu.h
index cf259de51531..30509b9f37fd 100644
--- a/arch/um/include/asm/mmu.h
+++ b/arch/um/include/asm/mmu.h
@@ -1,12 +1,24 @@
 /* 
- * Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
+ * Copyright (C) 2002 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
 * Licensed under the GPL
 */
-#ifndef __MMU_H
+#ifndef __ARCH_UM_MMU_H
-#define __MMU_H
+#define __ARCH_UM_MMU_H
-#include "um_mmu.h"
+#include "mm_id.h"
+#include <asm/mm_context.h>
-#endif
+typedef struct mm_context {
+        struct mm_id id;
+        struct uml_arch_mm_context arch;
+        struct page **stub_pages;
+} mm_context_t;
+extern void __switch_mm(struct mm_id * mm_idp);
+/* Avoid tangled inclusion with asm/ldt.h */
+extern long init_new_ldt(struct mm_context *to_mm, struct mm_context *from_mm);
+extern void free_ldt(struct mm_context *mm);
+#endif
diff --git a/arch/um/include/asm/mmu_context.h b/arch/um/include/asm/mmu_context.h
index 34d813011b7a..591b3d8d7614 100644
--- a/arch/um/include/asm/mmu_context.h
+++ b/arch/um/include/asm/mmu_context.h
@@ -6,15 +6,12 @@
 #ifndef __UM_MMU_CONTEXT_H
 #define __UM_MMU_CONTEXT_H
-#include "linux/sched.h"
+#include <linux/sched.h>
-#include "um_mmu.h"
+#include <asm/mmu.h>
 extern void arch_dup_mmap(struct mm_struct *oldmm, struct mm_struct *mm);
 extern void arch_exit_mmap(struct mm_struct *mm);
-#define get_mmu_context(task) do ; while(0)
-#define activate_context(tsk) do ; while(0)
 #define deactivate_mm(tsk,mm)   do { } while (0)
 extern void force_flush_all(void);
diff --git a/arch/um/include/asm/page.h b/arch/um/include/asm/page.h
index 4cc9b6cf480a..7cfc3cedce84 100644
--- a/arch/um/include/asm/page.h
+++ b/arch/um/include/asm/page.h
@@ -19,7 +19,7 @@
 struct page;
 #include <linux/types.h>
-#include <sysdep/vm-flags.h>
+#include <asm/vm-flags.h>
 /*
 * These are used to make use of C type-checking..
diff --git a/arch/um/include/asm/page_offset.h b/arch/um/include/asm/page_offset.h
deleted file mode 100644
index 1c168dfbf359..000000000000
--- a/arch/um/include/asm/page_offset.h
+++ /dev/null
@@ -1 +0,0 @@
-#define PAGE_OFFSET_RAW (uml_physmem)
diff --git a/arch/um/include/asm/pda.h b/arch/um/include/asm/pda.h
deleted file mode 100644
index ddcd774fc2a0..000000000000
--- a/arch/um/include/asm/pda.h
+++ /dev/null
@@ -1,21 +0,0 @@
-/*
- * Copyright 2003 PathScale, Inc.
- *
- * Licensed under the GPL
- */
-#ifndef __UM_PDA_X86_64_H
-#define __UM_PDA_X86_64_H
-/* XXX */
-struct foo {
-        unsigned int __softirq_pending;
-        unsigned int __nmi_count;
-};
-extern struct foo me;
-#define read_pda(me) (&me)
-#endif
diff --git a/arch/um/include/asm/percpu.h b/arch/um/include/asm/percpu.h
deleted file mode 100644
index efe7508d8abd..000000000000
--- a/arch/um/include/asm/percpu.h
+++ /dev/null
@@ -1,6 +0,0 @@
-#ifndef __UM_PERCPU_H
-#define __UM_PERCPU_H
-#include <asm-generic/percpu.h>
-#endif /* __UM_PERCPU_H */
diff --git a/arch/um/include/asm/ptrace-generic.h b/arch/um/include/asm/ptrace-generic.h
index 1a7d2757fe05..f605d3c4844c 100644
--- a/arch/um/include/asm/ptrace-generic.h
+++ b/arch/um/include/asm/ptrace-generic.h
@@ -23,17 +23,10 @@ struct pt_regs {
 #define PT_REGS_IP(r) UPT_IP(&(r)->regs)
 #define PT_REGS_SP(r) UPT_SP(&(r)->regs)
-#define PT_REG(r, reg) UPT_REG(&(r)->regs, reg)
-#define PT_REGS_SET(r, reg, val) UPT_SET(&(r)->regs, reg, val)
-#define PT_REGS_SET_SYSCALL_RETURN(r, res) \
-        UPT_SET_SYSCALL_RETURN(&(r)->regs, res)
 #define PT_REGS_RESTART_SYSCALL(r) UPT_RESTART_SYSCALL(&(r)->regs)
 #define PT_REGS_SYSCALL_NR(r) UPT_SYSCALL_NR(&(r)->regs)
-#define PT_REGS_SC(r) UPT_SC(&(r)->regs)
 #define instruction_pointer(regs) PT_REGS_IP(regs)
 struct task_struct;
diff --git a/arch/um/include/asm/required-features.h b/arch/um/include/asm/required-features.h
deleted file mode 100644
index dfb967b2d2f3..000000000000
--- a/arch/um/include/asm/required-features.h
+++ /dev/null
@@ -1,9 +0,0 @@
-#ifndef __UM_REQUIRED_FEATURES_H
-#define __UM_REQUIRED_FEATURES_H
-/*
- * Nothing to see, just need something for the i386 and x86_64 asm
- * headers to include.
- */
-#endif
diff --git a/arch/um/include/asm/sections.h b/arch/um/include/asm/sections.h
deleted file mode 100644
index 6b0231eefea8..000000000000
--- a/arch/um/include/asm/sections.h
+++ /dev/null
@@ -1,7 +0,0 @@
-#ifndef _UM_SECTIONS_H
-#define _UM_SECTIONS_H
-/* nothing to see, move along */
-#include <asm-generic/sections.h>
-#endif
diff --git a/arch/um/include/asm/segment.h b/arch/um/include/asm/segment.h
deleted file mode 100644
index 45183fcd10b6..000000000000
--- a/arch/um/include/asm/segment.h
+++ /dev/null
@@ -1,10 +0,0 @@
-#ifndef __UM_SEGMENT_H
-#define __UM_SEGMENT_H
-extern int host_gdt_entry_tls_min;
-#define GDT_ENTRY_TLS_ENTRIES 3
-#define GDT_ENTRY_TLS_MIN host_gdt_entry_tls_min
-#define GDT_ENTRY_TLS_MAX (GDT_ENTRY_TLS_MIN + GDT_ENTRY_TLS_ENTRIES - 1)
-#endif
diff --git a/arch/um/include/asm/system.h b/arch/um/include/asm/system.h
deleted file mode 100644
index 68a90ecd1450..000000000000
--- a/arch/um/include/asm/system.h
+++ /dev/null
@@ -1,47 +0,0 @@
-#ifndef __UM_SYSTEM_GENERIC_H
-#define __UM_SYSTEM_GENERIC_H
-#include "sysdep/system.h"
-extern int get_signals(void);
-extern int set_signals(int enable);
-extern void block_signals(void);
-extern void unblock_signals(void);
-static inline unsigned long arch_local_save_flags(void)
-{
-        return get_signals();
-}
-static inline void arch_local_irq_restore(unsigned long flags)
-{
-        set_signals(flags);
-}
-static inline void arch_local_irq_enable(void)
-{
-        unblock_signals();
-}
-static inline void arch_local_irq_disable(void)
-{
-        block_signals();
-}
-static inline unsigned long arch_local_irq_save(void)
-{
-        unsigned long flags;
-        flags = arch_local_save_flags();
-        arch_local_irq_disable();
-        return flags;
-}
-static inline bool arch_irqs_disabled(void)
-{
-        return arch_local_save_flags() == 0;
-}
-extern void *_switch_to(void *prev, void *next, void *last);
-#define switch_to(prev, next, last) prev = _switch_to(prev, next, last)
-#endif
diff --git a/arch/um/include/asm/topology.h b/arch/um/include/asm/topology.h
deleted file mode 100644
index 0905e4f21d42..000000000000
--- a/arch/um/include/asm/topology.h
+++ /dev/null
@@ -1,6 +0,0 @@
-#ifndef _ASM_UM_TOPOLOGY_H
-#define _ASM_UM_TOPOLOGY_H
-#include <asm-generic/topology.h>
-#endif
diff --git a/arch/um/include/asm/uaccess.h b/arch/um/include/asm/uaccess.h
index b9a895d6fa1d..3f22fbf7ca1d 100644
--- a/arch/um/include/asm/uaccess.h
+++ b/arch/um/include/asm/uaccess.h
@@ -6,15 +6,15 @@
 #ifndef __UM_UACCESS_H
 #define __UM_UACCESS_H
-#include <asm/errno.h>
-#include <asm/processor.h>
 /* thread_info has a mm_segment_t in it, so put the definition up here */
 typedef struct {
        unsigned long seg;
 } mm_segment_t;
-#include "linux/thread_info.h"
+#include <linux/thread_info.h>
+#include <linux/errno.h>
+#include <asm/processor.h>
+#include <asm/elf.h>
 #define VERIFY_READ 0
 #define VERIFY_WRITE 1
@@ -38,7 +38,86 @@ typedef struct {
 #define segment_eq(a, b) ((a).seg == (b).seg)
-#include "um_uaccess.h"
+#define __under_task_size(addr, size) \
+        (((unsigned long) (addr) < TASK_SIZE) && \
+         (((unsigned long) (addr) + (size)) < TASK_SIZE))
+#define __access_ok_vsyscall(type, addr, size) \
+         ((type == VERIFY_READ) && \
+          ((unsigned long) (addr) >= FIXADDR_USER_START) && \
+          ((unsigned long) (addr) + (size) <= FIXADDR_USER_END) && \
+          ((unsigned long) (addr) + (size) >= (unsigned long)(addr)))
+#define __addr_range_nowrap(addr, size) \
+        ((unsigned long) (addr) <= ((unsigned long) (addr) + (size)))
+#define access_ok(type, addr, size) \
+        (__addr_range_nowrap(addr, size) && \
+         (__under_task_size(addr, size) || \
+          __access_ok_vsyscall(type, addr, size) || \
+          segment_eq(get_fs(), KERNEL_DS)))
+extern int copy_from_user(void *to, const void __user *from, int n);
+extern int copy_to_user(void __user *to, const void *from, int n);
+/*
+ * strncpy_from_user: - Copy a NUL terminated string from userspace.
+ * @dst:   Destination address, in kernel space.  This buffer must be at
+ *         least @count bytes long.
+ * @src:   Source address, in user space.
+ * @count: Maximum number of bytes to copy, including the trailing NUL.
+ *
+ * Copies a NUL-terminated string from userspace to kernel space.
+ *
+ * On success, returns the length of the string (not including the trailing
+ * NUL).
+ *
+ * If access to userspace fails, returns -EFAULT (some data may have been
+ * copied).
+ *
+ * If @count is smaller than the length of the string, copies @count bytes
+ * and returns @count.
+ */
+extern int strncpy_from_user(char *dst, const char __user *src, int count);
+/*
+ * __clear_user: - Zero a block of memory in user space, with less checking.
+ * @to:   Destination address, in user space.
+ * @n:    Number of bytes to zero.
+ *
+ * Zero a block of memory in user space.  Caller must check
+ * the specified block with access_ok() before calling this function.
+ *
+ * Returns number of bytes that could not be cleared.
+ * On success, this will be zero.
+ */
+extern int __clear_user(void __user *mem, int len);
+/*
+ * clear_user: - Zero a block of memory in user space.
+ * @to:   Destination address, in user space.
+ * @n:    Number of bytes to zero.
+ *
+ * Zero a block of memory in user space.
+ *
+ * Returns number of bytes that could not be cleared.
+ * On success, this will be zero.
+ */
+extern int clear_user(void __user *mem, int len);
+/*
+ * strlen_user: - Get the size of a string in user space.
+ * @str: The string to measure.
+ * @n:   The maximum valid length
+ *
+ * Get the size of a NUL-terminated string in user space.
+ *
+ * Returns the size of the string INCLUDING the terminating NUL.
+ * On exception, returns 0.
+ * If the string is too long, returns a value greater than @n.
+ */
+extern int strnlen_user(const void __user *str, int len);
 #define __copy_from_user(to, from, n) copy_from_user(to, from, n)
diff --git a/arch/um/include/asm/xor.h b/arch/um/include/asm/xor.h
deleted file mode 100644
index a19db3e17241..000000000000
--- a/arch/um/include/asm/xor.h
+++ /dev/null
@@ -1,6 +0,0 @@
-#ifndef __UM_XOR_H
-#define __UM_XOR_H
-#include "asm-generic/xor.h"
-#endif
diff --git a/arch/um/include/shared/as-layout.h b/arch/um/include/shared/as-layout.h
index a92b678503cf..896e16602176 100644
--- a/arch/um/include/shared/as-layout.h
+++ b/arch/um/include/shared/as-layout.h
@@ -6,7 +6,7 @@
 #ifndef __START_H__
 #define __START_H__
-#include "kern_constants.h"
+#include <generated/asm-offsets.h>
 /*
 * Stolen from linux/const.h, which can't be directly included since
diff --git a/arch/um/include/shared/common-offsets.h b/arch/um/include/shared/common-offsets.h
index 72009c7e3210..d7fe563aa7e7 100644
--- a/arch/um/include/shared/common-offsets.h
+++ b/arch/um/include/shared/common-offsets.h
@@ -2,7 +2,6 @@
 DEFINE(KERNEL_MADV_REMOVE, MADV_REMOVE);
-OFFSET(HOST_TASK_REGS, task_struct, thread.regs);
 OFFSET(HOST_TASK_PID, task_struct, pid);
 DEFINE(UM_KERN_PAGE_SIZE, PAGE_SIZE);
diff --git a/arch/um/include/shared/initrd.h b/arch/um/include/shared/initrd.h
deleted file mode 100644
index 22673bcc273d..000000000000
--- a/arch/um/include/shared/initrd.h
+++ /dev/null
@@ -1,12 +0,0 @@
-/*
- * Copyright (C) 2000 Jeff Dike (jdike@karaya.com)
- * Licensed under the GPL
- */
-#ifndef __INITRD_USER_H__
-#define __INITRD_USER_H__
-extern int load_initrd(char *filename, void *buf, int size);
-#endif
diff --git a/arch/um/include/shared/kern.h b/arch/um/include/shared/kern.h
index 4ce3fc650e57..6cd01240bbf0 100644
--- a/arch/um/include/shared/kern.h
+++ b/arch/um/include/shared/kern.h
@@ -13,28 +13,10 @@
 * includes.
 */
-extern int errno;
-extern int clone(int (*proc)(void *), void *sp, int flags, void *data);
-extern int sleep(int);
 extern int printf(const char *fmt, ...);
-extern char *strerror(int errnum);
-extern char *ptsname(int __fd);
-extern int munmap(void *, int);
 extern void *sbrk(int increment);
-extern void *malloc(int size);
-extern void perror(char *err);
-extern int kill(int pid, int sig);
-extern int getuid(void);
-extern int getgid(void);
 extern int pause(void);
-extern int write(int, const void *, int);
 extern void exit(int);
-extern int close(int);
-extern int read(unsigned int, char *, int);
-extern int pipe(int *);
-extern int sched_yield(void);
-extern int ptrace(int op, int pid, long addr, long data);
 #endif
diff --git a/arch/um/include/shared/kern_util.h b/arch/um/include/shared/kern_util.h
index 3c341222d252..0f1483852460 100644
--- a/arch/um/include/shared/kern_util.h
+++ b/arch/um/include/shared/kern_util.h
@@ -21,7 +21,6 @@ extern unsigned long alloc_stack(int order, int atomic);
 extern void free_stack(unsigned long stack, int order);
 extern int do_signal(void);
-extern void copy_sc(struct uml_pt_regs *regs, void *from);
 extern void interrupt_end(void);
 extern void relay_signal(int sig, struct uml_pt_regs *regs);
diff --git a/arch/um/include/shared/ldt.h b/arch/um/include/shared/ldt.h
deleted file mode 100644
index a7f999a58774..000000000000
--- a/arch/um/include/shared/ldt.h
+++ /dev/null
@@ -1,37 +0,0 @@
-/*
- * Copyright (C) 2004 Fujitsu Siemens Computers GmbH
- * Licensed under the GPL
- *
- * Author: Bodo Stroesser <bstroesser@fujitsu-siemens.com>
- */
-#ifndef __ASM_LDT_H
-#define __ASM_LDT_H
-#include <linux/mutex.h>
-#include <sysdep/host_ldt.h>
-extern void ldt_host_info(void);
-#define LDT_PAGES_MAX \
-        ((LDT_ENTRIES * LDT_ENTRY_SIZE)/PAGE_SIZE)
-#define LDT_ENTRIES_PER_PAGE \
-        (PAGE_SIZE/LDT_ENTRY_SIZE)
-#define LDT_DIRECT_ENTRIES \
-        ((LDT_PAGES_MAX*sizeof(void *))/LDT_ENTRY_SIZE)
-struct ldt_entry {
-        __u32 a;
-        __u32 b;
-};
-typedef struct uml_ldt {
-        int entry_count;
-        struct mutex lock;
-        union {
-                struct ldt_entry * pages[LDT_PAGES_MAX];
-                struct ldt_entry entries[LDT_DIRECT_ENTRIES];
-        } u;
-} uml_ldt_t;
-#endif
diff --git a/arch/um/include/shared/mem_kern.h b/arch/um/include/shared/mem_kern.h
deleted file mode 100644
index 69be0fd0ce4b..000000000000
--- a/arch/um/include/shared/mem_kern.h
+++ /dev/null
@@ -1,20 +0,0 @@
-/*
- * Copyright (C) 2003 Jeff Dike (jdike@addtoit.com)
- * Licensed under the GPL
- */
-#ifndef __MEM_KERN_H__
-#define __MEM_KERN_H__
-#include "linux/list.h"
-#include "linux/types.h"
-struct remapper {
-        struct list_head list;
-        int (*proc)(int, unsigned long, int, __u64);
-};
-extern void register_remapper(struct remapper *info);
-#endif
diff --git a/arch/um/include/shared/os.h b/arch/um/include/shared/os.h
index 83c7c2ecd614..89b686c1a3ea 100644
--- a/arch/um/include/shared/os.h
+++ b/arch/um/include/shared/os.h
@@ -10,7 +10,6 @@
 #include "irq_user.h"
 #include "longjmp.h"
 #include "mm_id.h"
-#include "sysdep/tls.h"
 #define CATCH_EINTR(expr) while ((errno = 0, ((expr) < 0)) && (errno == EINTR))
@@ -203,12 +202,6 @@ extern int os_drop_memory(void *addr, int length);
 extern int can_drop_memory(void);
 extern void os_flush_stdout(void);
-/* uaccess.c */
-extern unsigned long __do_user_copy(void *to, const void *from, int n,
-                                    void **fault_addr, jmp_buf **fault_catcher,
-                                    void (*op)(void *to, const void *from,
-                                               int n), int *faulted_out);
 /* execvp.c */
 extern int execvp_noalloc(char *buf, const char *file, char *const argv[]);
 /* helper.c */
@@ -218,10 +211,6 @@ extern int run_helper_thread(int (*proc)(void *), void *arg,
 extern int helper_wait(int pid);
-/* tls.c */
-extern int os_set_thread_area(user_desc_t *info, int pid);
-extern int os_get_thread_area(user_desc_t *info, int pid);
 /* umid.c */
 extern int umid_file_name(char *name, char *buf, int len);
 extern int set_umid(char *name);
@@ -231,7 +220,7 @@ extern char *get_umid(void);
 extern void timer_init(void);
 extern void set_sigstack(void *sig_stack, int size);
 extern void remove_sigstack(void);
-extern void set_handler(int sig, void (*handler)(int), int flags, ...);
+extern void set_handler(int sig);
 extern int change_sig(int signal, int on);
 extern void block_signals(void);
 extern void unblock_signals(void);
diff --git a/arch/um/include/shared/process.h b/arch/um/include/shared/process.h
deleted file mode 100644
index bb873a51262e..000000000000
--- a/arch/um/include/shared/process.h
+++ /dev/null
@@ -1,17 +0,0 @@
-/* 
- * Copyright (C) 2000 - 2008 Jeff Dike (jdike@{addtoit,linux.intel}.com)
- * Licensed under the GPL
- */
-#ifndef __PROCESS_H__
-#define __PROCESS_H__
-#include <signal.h>
-/* Copied from linux/compiler-gcc.h since we can't include it directly */
-#define barrier() __asm__ __volatile__("": : :"memory")
-extern void sig_handler(int sig, struct sigcontext *sc);
-extern void alarm_handler(int sig, struct sigcontext *sc);
-#endif
diff --git a/arch/um/include/shared/ptrace_user.h b/arch/um/include/shared/ptrace_user.h
index 7fd8539bc19a..56b2f284b108 100644
--- a/arch/um/include/shared/ptrace_user.h
+++ b/arch/um/include/shared/ptrace_user.h
@@ -6,7 +6,8 @@
 #ifndef __PTRACE_USER_H__
 #define __PTRACE_USER_H__
-#include "sysdep/ptrace_user.h"
+#include <sys/ptrace.h>
+#include <sysdep/ptrace_user.h>
 extern int ptrace_getregs(long pid, unsigned long *regs_out);
 extern int ptrace_setregs(long pid, unsigned long *regs_in);
diff --git a/arch/um/include/shared/skas_ptregs.h b/arch/um/include/shared/skas_ptregs.h
deleted file mode 100644
index 73db19e9c077..000000000000
--- a/arch/um/include/shared/skas_ptregs.h
+++ /dev/null
@@ -1,6 +0,0 @@
-#ifndef __SKAS_PT_REGS_
-#define __SKAS_PT_REGS_
-#include <user_constants.h>
-#endif
diff --git a/arch/um/include/shared/syscall.h b/arch/um/include/shared/syscall.h
deleted file mode 100644
index dda1df901a08..000000000000
--- a/arch/um/include/shared/syscall.h
+++ /dev/null
@@ -1,12 +0,0 @@
-/*
- * Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
- * Licensed under the GPL
- */
-#ifndef __SYSCALL_USER_H
-#define __SYSCALL_USER_H
-extern int record_syscall_start(int syscall);
-extern void record_syscall_end(int index, long result);
-#endif
diff --git a/arch/um/include/shared/task.h b/arch/um/include/shared/task.h
deleted file mode 100644
index 3fe726b3cf48..000000000000
--- a/arch/um/include/shared/task.h
+++ /dev/null
@@ -1,9 +0,0 @@
-#ifndef __TASK_H
-#define __TASK_H
-#include <kern_constants.h>
-#define TASK_REGS(task) ((struct uml_pt_regs *) &(((char *) (task))[HOST_TASK_REGS]))
-#define TASK_PID(task) *((int *) &(((char *) (task))[HOST_TASK_PID]))
-#endif
diff --git a/arch/um/include/shared/tlb.h b/arch/um/include/shared/tlb.h
deleted file mode 100644
index ecd2265b301b..000000000000
--- a/arch/um/include/shared/tlb.h
+++ /dev/null
@@ -1,15 +0,0 @@
-/* 
- * Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
- * Licensed under the GPL
- */
-#ifndef __TLB_H__
-#define __TLB_H__
-#include "um_mmu.h"
-extern void force_flush_all(void);
-extern int flush_tlb_kernel_range_common(unsigned long start,
-                                         unsigned long end);
-#endif
diff --git a/arch/um/include/shared/um_malloc.h b/arch/um/include/shared/um_malloc.h
index c554d706d106..6395fef6b69b 100644
--- a/arch/um/include/shared/um_malloc.h
+++ b/arch/um/include/shared/um_malloc.h
@@ -6,7 +6,7 @@
 #ifndef __UM_MALLOC_H__
 #define __UM_MALLOC_H__
-#include "kern_constants.h"
+#include <generated/asm-offsets.h>
 extern void *uml_kmalloc(int size, int flags);
 extern void kfree(const void *ptr);
diff --git a/arch/um/include/shared/um_mmu.h b/arch/um/include/shared/um_mmu.h
deleted file mode 100644
index b1a7e47d1027..000000000000
--- a/arch/um/include/shared/um_mmu.h
+++ /dev/null
@@ -1,24 +0,0 @@
-/* 
- * Copyright (C) 2002 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
- * Licensed under the GPL
- */
-#ifndef __ARCH_UM_MMU_H
-#define __ARCH_UM_MMU_H
-#include "mm_id.h"
-#include "ldt.h"
-typedef struct mm_context {
-        struct mm_id id;
-        struct uml_ldt ldt;
-        struct page **stub_pages;
-} mm_context_t;
-extern void __switch_mm(struct mm_id * mm_idp);
-/* Avoid tangled inclusion with asm/ldt.h */
-extern long init_new_ldt(struct mm_context *to_mm, struct mm_context *from_mm);
-extern void free_ldt(struct mm_context *mm);
-#endif
diff --git a/arch/um/include/shared/um_uaccess.h b/arch/um/include/shared/um_uaccess.h
deleted file mode 100644
index 45c04999d670..000000000000
--- a/arch/um/include/shared/um_uaccess.h
+++ /dev/null
@@ -1,97 +0,0 @@
-/* 
- * Copyright (C) 2002 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
- * Licensed under the GPL
- */
-#ifndef __ARCH_UM_UACCESS_H
-#define __ARCH_UM_UACCESS_H
-#include <asm/elf.h>
-#include <asm/fixmap.h>
-#include "sysdep/archsetjmp.h"
-#define __under_task_size(addr, size) \
-        (((unsigned long) (addr) < TASK_SIZE) && \
-         (((unsigned long) (addr) + (size)) < TASK_SIZE))
-#define __access_ok_vsyscall(type, addr, size) \
-         ((type == VERIFY_READ) && \
-          ((unsigned long) (addr) >= FIXADDR_USER_START) && \
-          ((unsigned long) (addr) + (size) <= FIXADDR_USER_END) && \
-          ((unsigned long) (addr) + (size) >= (unsigned long)(addr)))
-#define __addr_range_nowrap(addr, size) \
-        ((unsigned long) (addr) <= ((unsigned long) (addr) + (size)))
-#define access_ok(type, addr, size) \
-        (__addr_range_nowrap(addr, size) && \
-         (__under_task_size(addr, size) || \
-          __access_ok_vsyscall(type, addr, size) || \
-          segment_eq(get_fs(), KERNEL_DS)))
-extern int copy_from_user(void *to, const void __user *from, int n);
-extern int copy_to_user(void __user *to, const void *from, int n);
-extern int __do_copy_to_user(void *to, const void *from, int n,
-                             void **fault_addr, jmp_buf **fault_catcher);
-/*
- * strncpy_from_user: - Copy a NUL terminated string from userspace.
- * @dst:   Destination address, in kernel space.  This buffer must be at
- *         least @count bytes long.
- * @src:   Source address, in user space.
- * @count: Maximum number of bytes to copy, including the trailing NUL.
- *
- * Copies a NUL-terminated string from userspace to kernel space.
- *
- * On success, returns the length of the string (not including the trailing
- * NUL).
- *
- * If access to userspace fails, returns -EFAULT (some data may have been
- * copied).
- *
- * If @count is smaller than the length of the string, copies @count bytes
- * and returns @count.
- */
-extern int strncpy_from_user(char *dst, const char __user *src, int count);
-/*
- * __clear_user: - Zero a block of memory in user space, with less checking.
- * @to:   Destination address, in user space.
- * @n:    Number of bytes to zero.
- *
- * Zero a block of memory in user space.  Caller must check
- * the specified block with access_ok() before calling this function.
- *
- * Returns number of bytes that could not be cleared.
- * On success, this will be zero.
- */
-extern int __clear_user(void __user *mem, int len);
-/*
- * clear_user: - Zero a block of memory in user space.
- * @to:   Destination address, in user space.
- * @n:    Number of bytes to zero.
- *
- * Zero a block of memory in user space.
- *
- * Returns number of bytes that could not be cleared.
- * On success, this will be zero.
- */
-extern int clear_user(void __user *mem, int len);
-/*
- * strlen_user: - Get the size of a string in user space.
- * @str: The string to measure.
- * @n:   The maximum valid length
- *
- * Get the size of a NUL-terminated string in user space.
- *
- * Returns the size of the string INCLUDING the terminating NUL.
- * On exception, returns 0.
- * If the string is too long, returns a value greater than @n.
- */
-extern int strnlen_user(const void __user *str, int len);
-#endif
diff --git a/arch/um/include/shared/user.h b/arch/um/include/shared/user.h
index 293f7c794faa..4fa82c055aab 100644
--- a/arch/um/include/shared/user.h
+++ b/arch/um/include/shared/user.h
@@ -6,7 +6,7 @@
 #ifndef __USER_H__
 #define __USER_H__
-#include "kern_constants.h"
+#include <generated/asm-offsets.h>
 /*
 * The usual definition - copied here because the kernel provides its own,
@@ -36,10 +36,11 @@ static inline int printk(const char *fmt, ...)
 }
 #endif
-extern void schedule(void);
 extern int in_aton(char *str);
-extern int open_gdb_chan(void);
 extern size_t strlcpy(char *, const char *, size_t);
 extern size_t strlcat(char *, const char *, size_t);
+/* Copied from linux/compiler-gcc.h since we can't include it directly */
+#define barrier() __asm__ __volatile__("": : :"memory")
 #endif
diff --git a/arch/um/kernel/Makefile b/arch/um/kernel/Makefile
index c4491c15afb2..bc494741b1f3 100644
--- a/arch/um/kernel/Makefile
+++ b/arch/um/kernel/Makefile
@@ -11,7 +11,7 @@ clean-files :=
 obj-y = config.o exec.o exitcode.o init_task.o irq.o ksyms.o mem.o \
        physmem.o process.o ptrace.o reboot.o sigio.o \
-        signal.o smp.o syscall.o sysrq.o time.o tlb.o trap.o uaccess.o \
+        signal.o smp.o syscall.o sysrq.o time.o tlb.o trap.o \
        um_arch.o umid.o skas/
 obj-$(CONFIG_BLK_DEV_INITRD) += initrd.o
diff --git a/arch/um/kernel/exec.c b/arch/um/kernel/exec.c
index 939a4a67f0fd..6cade9366364 100644
--- a/arch/um/kernel/exec.c
+++ b/arch/um/kernel/exec.c
@@ -3,14 +3,15 @@
 * Licensed under the GPL
 */
-#include "linux/stddef.h"
+#include <linux/stddef.h>
-#include "linux/fs.h"
+#include <linux/module.h>
-#include "linux/ptrace.h"
+#include <linux/fs.h>
-#include "linux/sched.h"
+#include <linux/ptrace.h>
-#include "linux/slab.h"
+#include <linux/sched.h>
-#include "asm/current.h"
+#include <linux/slab.h>
-#include "asm/processor.h"
+#include <asm/current.h>
-#include "asm/uaccess.h"
+#include <asm/processor.h>
+#include <asm/uaccess.h>
 #include "as-layout.h"
 #include "mem_user.h"
 #include "skas.h"
@@ -41,6 +42,7 @@ void start_thread(struct pt_regs *regs, unsigned long eip, unsigned long esp)
        PT_REGS_IP(regs) = eip;
        PT_REGS_SP(regs) = esp;
 }
+EXPORT_SYMBOL(start_thread);
 static long execve1(const char *file,
                    const char __user *const __user *argv,
diff --git a/arch/um/kernel/gmon_syms.c b/arch/um/kernel/gmon_syms.c
index 72eccd2a4113..e9bcf247bcee 100644
--- a/arch/um/kernel/gmon_syms.c
+++ b/arch/um/kernel/gmon_syms.c
@@ -7,18 +7,3 @@
 extern void __bb_init_func(void *)  __attribute__((weak));
 EXPORT_SYMBOL(__bb_init_func);
-/*
- * This is defined (and referred to in profiling stub code) only by some GCC
- * versions in libgcov.
- *
- * Since SuSE backported the fix, we cannot handle it depending on GCC version.
- * So, unconditionally export it. But also give it a weak declaration, which
- * will be overridden by any other one.
- */
-extern void __gcov_init(void *) __attribute__((weak));
-EXPORT_SYMBOL(__gcov_init);
-extern void __gcov_merge_add(void *) __attribute__((weak));
-EXPORT_SYMBOL(__gcov_merge_add);
diff --git a/arch/um/kernel/initrd.c b/arch/um/kernel/initrd.c
index d386c75c88eb..10cc18f729fd 100644
--- a/arch/um/kernel/initrd.c
+++ b/arch/um/kernel/initrd.c
@@ -7,12 +7,12 @@
 #include "linux/bootmem.h"
 #include "linux/initrd.h"
 #include "asm/types.h"
-#include "initrd.h"
 #include "init.h"
 #include "os.h"
 /* Changed by uml_initrd_setup, which is a setup */
 static char *initrd __initdata = NULL;
+static int load_initrd(char *filename, void *buf, int size);
 static int __init read_initrd(void)
 {
@@ -62,7 +62,7 @@ __uml_setup("initrd=", uml_initrd_setup,
 "    name of the file containing the image.\n\n"
 );
-int load_initrd(char *filename, void *buf, int size)
+static int load_initrd(char *filename, void *buf, int size)
 {
        int fd, n;
diff --git a/arch/um/kernel/irq.c b/arch/um/kernel/irq.c
index 9e485c770308..71b8c947e5ef 100644
--- a/arch/um/kernel/irq.c
+++ b/arch/um/kernel/irq.c
@@ -258,6 +258,7 @@ void deactivate_fd(int fd, int irqnum)
        ignore_sigio_fd(fd);
 }
+EXPORT_SYMBOL(deactivate_fd);
 /*
 * Called just before shutdown in order to provide a clean exec
diff --git a/arch/um/kernel/ksyms.c b/arch/um/kernel/ksyms.c
index 0ae0dfcfbffb..e17bea0b22e1 100644
--- a/arch/um/kernel/ksyms.c
+++ b/arch/um/kernel/ksyms.c
@@ -3,33 +3,11 @@
 * Licensed under the GPL
 */
-#include "linux/module.h"
+#include <linux/module.h>
-#include "linux/syscalls.h"
-#include "asm/tlbflush.h"
-#include "asm/uaccess.h"
-#include "as-layout.h"
-#include "kern_util.h"
-#include "mem_user.h"
 #include "os.h"
-EXPORT_SYMBOL(uml_physmem);
 EXPORT_SYMBOL(set_signals);
 EXPORT_SYMBOL(get_signals);
-EXPORT_SYMBOL(kernel_thread);
-EXPORT_SYMBOL(sys_waitpid);
-EXPORT_SYMBOL(flush_tlb_range);
-EXPORT_SYMBOL(high_physmem);
-EXPORT_SYMBOL(empty_zero_page);
-EXPORT_SYMBOL(handle_page_fault);
-EXPORT_SYMBOL(find_iomem);
-EXPORT_SYMBOL(strnlen_user);
-EXPORT_SYMBOL(strncpy_from_user);
-EXPORT_SYMBOL(copy_to_user);
-EXPORT_SYMBOL(copy_from_user);
-EXPORT_SYMBOL(clear_user);
-EXPORT_SYMBOL(uml_strdup);
 EXPORT_SYMBOL(os_stat_fd);
 EXPORT_SYMBOL(os_stat_file);
@@ -57,24 +35,10 @@ EXPORT_SYMBOL(os_connect_socket);
 EXPORT_SYMBOL(os_accept_connection);
 EXPORT_SYMBOL(os_rcv_fd);
 EXPORT_SYMBOL(run_helper);
-EXPORT_SYMBOL(start_thread);
 EXPORT_SYMBOL(os_major);
 EXPORT_SYMBOL(os_minor);
 EXPORT_SYMBOL(os_makedev);
 EXPORT_SYMBOL(add_sigio_fd);
 EXPORT_SYMBOL(ignore_sigio_fd);
-EXPORT_SYMBOL(deactivate_fd);
 EXPORT_SYMBOL(sigio_broken);
-#ifdef CONFIG_SMP
-/* required for SMP */
-extern void __write_lock_failed(rwlock_t *rw);
-EXPORT_SYMBOL(__write_lock_failed);
-extern void __read_lock_failed(rwlock_t *rw);
-EXPORT_SYMBOL(__read_lock_failed);
-#endif
diff --git a/arch/um/kernel/mem.c b/arch/um/kernel/mem.c
index 8137ccc9635b..ebb86b218445 100644
--- a/arch/um/kernel/mem.c
+++ b/arch/um/kernel/mem.c
@@ -4,6 +4,7 @@
 */
 #include <linux/stddef.h>
+#include <linux/module.h>
 #include <linux/bootmem.h>
 #include <linux/highmem.h>
 #include <linux/mm.h>
@@ -20,6 +21,7 @@
 /* allocated in paging_init, zeroed in mem_init, and unchanged thereafter */
 unsigned long *empty_zero_page = NULL;
+EXPORT_SYMBOL(empty_zero_page);
 /* allocated in paging_init and unchanged thereafter */
 static unsigned long *empty_bad_page = NULL;
diff --git a/arch/um/kernel/physmem.c b/arch/um/kernel/physmem.c
index a1a9090254c2..f116db15d402 100644
--- a/arch/um/kernel/physmem.c
+++ b/arch/um/kernel/physmem.c
@@ -3,20 +3,22 @@
 * Licensed under the GPL
 */
-#include "linux/bootmem.h"
+#include <linux/module.h>
-#include "linux/mm.h"
+#include <linux/bootmem.h>
-#include "linux/pfn.h"
+#include <linux/mm.h>
-#include "asm/page.h"
+#include <linux/pfn.h>
-#include "as-layout.h"
+#include <asm/page.h>
-#include "init.h"
+#include <as-layout.h>
-#include "kern.h"
+#include <init.h>
-#include "mem_user.h"
+#include <kern.h>
-#include "os.h"
+#include <mem_user.h>
+#include <os.h>
 static int physmem_fd = -1;
 /* Changed during early boot */
 unsigned long high_physmem;
+EXPORT_SYMBOL(high_physmem);
 extern unsigned long long physmem_size;
@@ -184,6 +186,7 @@ unsigned long find_iomem(char *driver, unsigned long *len_out)
        return 0;
 }
+EXPORT_SYMBOL(find_iomem);
 static int setup_iomem(void)
 {
diff --git a/arch/um/kernel/process.c b/arch/um/kernel/process.c
index 21c1ae7c3d75..c5338351aecd 100644
--- a/arch/um/kernel/process.c
+++ b/arch/um/kernel/process.c
@@ -20,12 +20,12 @@
 #include <linux/threads.h>
 #include <asm/current.h>
 #include <asm/pgtable.h>
+#include <asm/mmu_context.h>
 #include <asm/uaccess.h>
 #include "as-layout.h"
 #include "kern_util.h"
 #include "os.h"
 #include "skas.h"
-#include "tlb.h"
 /*
 * This is a per-cpu array.  A processor only modifies its entry and it only
@@ -78,6 +78,7 @@ int kernel_thread(int (*fn)(void *), void * arg, unsigned long flags)
                      &current->thread.regs, 0, NULL, NULL);
        return pid;
 }
+EXPORT_SYMBOL(kernel_thread);
 static inline void set_current(struct task_struct *task)
 {
@@ -286,6 +287,7 @@ char *uml_strdup(const char *string)
 {
        return kstrdup(string, GFP_KERNEL);
 }
+EXPORT_SYMBOL(uml_strdup);
 int copy_to_user_proc(void __user *to, void *from, int size)
 {
diff --git a/arch/um/kernel/signal.c b/arch/um/kernel/signal.c
index b5c094c4ade4..e8b889d3bce7 100644
--- a/arch/um/kernel/signal.c
+++ b/arch/um/kernel/signal.c
@@ -11,7 +11,6 @@
 #include <asm/unistd.h>
 #include "frame_kern.h"
 #include "kern_util.h"
-#include <sysdep/sigcontext.h>
 EXPORT_SYMBOL(block_signals);
 EXPORT_SYMBOL(unblock_signals);
diff --git a/arch/um/kernel/skas/clone.c b/arch/um/kernel/skas/clone.c
index 2c8583c1a344..e1fd066a3525 100644
--- a/arch/um/kernel/skas/clone.c
+++ b/arch/um/kernel/skas/clone.c
@@ -8,7 +8,6 @@
 #include <asm/unistd.h>
 #include <sys/time.h>
 #include "as-layout.h"
-#include "kern_constants.h"
 #include "ptrace_user.h"
 #include "stub-data.h"
 #include "sysdep/stub.h"
diff --git a/arch/um/kernel/skas/uaccess.c b/arch/um/kernel/skas/uaccess.c
index 696634214dc6..9fefd924fb49 100644
--- a/arch/um/kernel/skas/uaccess.c
+++ b/arch/um/kernel/skas/uaccess.c
@@ -6,6 +6,7 @@
 #include <linux/err.h>
 #include <linux/highmem.h>
 #include <linux/mm.h>
+#include <linux/module.h>
 #include <linux/sched.h>
 #include <asm/current.h>
 #include <asm/page.h>
@@ -149,6 +150,7 @@ int copy_from_user(void *to, const void __user *from, int n)
               buffer_op((unsigned long) from, n, 0, copy_chunk_from_user, &to):
               n;
 }
+EXPORT_SYMBOL(copy_from_user);
 static int copy_chunk_to_user(unsigned long to, int len, void *arg)
 {
@@ -170,6 +172,7 @@ int copy_to_user(void __user *to, const void *from, int n)
               buffer_op((unsigned long) to, n, 1, copy_chunk_to_user, &from) :
               n;
 }
+EXPORT_SYMBOL(copy_to_user);
 static int strncpy_chunk_from_user(unsigned long from, int len, void *arg)
 {
@@ -204,6 +207,7 @@ int strncpy_from_user(char *dst, const char __user *src, int count)
                return -EFAULT;
        return strnlen(dst, count);
 }
+EXPORT_SYMBOL(strncpy_from_user);
 static int clear_chunk(unsigned long addr, int len, void *unused)
 {
@@ -226,6 +230,7 @@ int clear_user(void __user *mem, int len)
        return access_ok(VERIFY_WRITE, mem, len) ?
               buffer_op((unsigned long) mem, len, 1, clear_chunk, NULL) : len;
 }
+EXPORT_SYMBOL(clear_user);
 static int strnlen_chunk(unsigned long str, int len, void *arg)
 {
@@ -251,3 +256,4 @@ int strnlen_user(const void __user *str, int len)
                return count + 1;
        return -EFAULT;
 }
+EXPORT_SYMBOL(strnlen_user);
diff --git a/arch/um/kernel/tlb.c b/arch/um/kernel/tlb.c
index d175d0566af0..7f3d4d86431a 100644
--- a/arch/um/kernel/tlb.c
+++ b/arch/um/kernel/tlb.c
@@ -4,6 +4,7 @@
 */
 #include <linux/mm.h>
+#include <linux/module.h>
 #include <linux/sched.h>
 #include <asm/pgtable.h>
 #include <asm/tlbflush.h>
@@ -11,7 +12,6 @@
 #include "mem_user.h"
 #include "os.h"
 #include "skas.h"
-#include "tlb.h"
 struct host_vm_change {
        struct host_vm_op {
@@ -287,7 +287,7 @@ void fix_range_common(struct mm_struct *mm, unsigned long start_addr,
        }
 }
-int flush_tlb_kernel_range_common(unsigned long start, unsigned long end)
+static int flush_tlb_kernel_range_common(unsigned long start, unsigned long end)
 {
        struct mm_struct *mm;
        pgd_t *pgd;
@@ -499,6 +499,7 @@ void flush_tlb_range(struct vm_area_struct *vma, unsigned long start,
                flush_tlb_kernel_range_common(start, end);
        else fix_range(vma->vm_mm, start, end, 0);
 }
+EXPORT_SYMBOL(flush_tlb_range);
 void flush_tlb_mm_range(struct mm_struct *mm, unsigned long start,
                        unsigned long end)
diff --git a/arch/um/kernel/trap.c b/arch/um/kernel/trap.c
index 8c7b8823d1f0..dafc94715950 100644
--- a/arch/um/kernel/trap.c
+++ b/arch/um/kernel/trap.c
@@ -6,6 +6,7 @@
 #include <linux/mm.h>
 #include <linux/sched.h>
 #include <linux/hardirq.h>
+#include <linux/module.h>
 #include <asm/current.h>
 #include <asm/pgtable.h>
 #include <asm/tlbflush.h>
@@ -14,7 +15,6 @@
 #include "kern_util.h"
 #include "os.h"
 #include "skas.h"
-#include "sysdep/sigcontext.h"
 /*
 * Note this is constrained to return 0, -EFAULT, -EACCESS, -ENOMEM by
@@ -112,6 +112,7 @@ out_of_memory:
        pagefault_out_of_memory();
        return 0;
 }
+EXPORT_SYMBOL(handle_page_fault);
 static void show_segv_info(struct uml_pt_regs *regs)
 {
diff --git a/arch/um/kernel/uaccess.c b/arch/um/kernel/uaccess.c
deleted file mode 100644
index dd33f040c526..000000000000
--- a/arch/um/kernel/uaccess.c
+++ /dev/null
@@ -1,33 +0,0 @@
-/*
- * Copyright (C) 2001 Chris Emerson (cemerson@chiark.greenend.org.uk)
- * Copyright (C) 2001 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
- * Licensed under the GPL
- */
-/*
- * These are here rather than tt/uaccess.c because skas mode needs them in
- * order to do SIGBUS recovery when a tmpfs mount runs out of room.
- */
-#include <linux/string.h>
-#include "os.h"
-static void __do_copy(void *to, const void *from, int n)
-{
-        memcpy(to, from, n);
-}
-int __do_copy_to_user(void *to, const void *from, int n,
-                      void **fault_addr, jmp_buf **fault_catcher)
-{
-        unsigned long fault;
-        int faulted;
-        fault = __do_user_copy(to, from, n, fault_addr, fault_catcher,
-                               __do_copy, &faulted);
-        if (!faulted)
-                return 0;
-        else
-                return n - (fault - (unsigned long) to);
-}
diff --git a/arch/um/kernel/um_arch.c b/arch/um/kernel/um_arch.c
index 8d84250324b3..ba00eae45aad 100644
--- a/arch/um/kernel/um_arch.c
+++ b/arch/um/kernel/um_arch.c
@@ -102,6 +102,8 @@ const struct seq_operations cpuinfo_op = {
 /* Set in linux_main */
 unsigned long uml_physmem;
+EXPORT_SYMBOL(uml_physmem);
 unsigned long uml_reserved; /* Also modified in mem_init */
 unsigned long start_vm;
 unsigned long end_vm;
diff --git a/arch/um/os-Linux/Makefile b/arch/um/os-Linux/Makefile
index b33f4dfe7ae5..dd764101e488 100644
--- a/arch/um/os-Linux/Makefile
+++ b/arch/um/os-Linux/Makefile
@@ -4,14 +4,14 @@
 #
 obj-y = aio.o execvp.o file.o helper.o irq.o main.o mem.o process.o \
-        registers.o sigio.o signal.o start_up.o time.o tty.o uaccess.o \
+        registers.o sigio.o signal.o start_up.o time.o tty.o \
-        umid.o tls.o user_syms.o util.o drivers/ sys-$(SUBARCH)/ skas/
+        umid.o user_syms.o util.o drivers/ skas/
 obj-$(CONFIG_ARCH_REUSE_HOST_VSYSCALL_AREA) += elf_aux.o
 USER_OBJS := $(user-objs-y) aio.o elf_aux.o execvp.o file.o helper.o irq.o \
        main.o mem.o process.o registers.o sigio.o signal.o start_up.o time.o \
-        tty.o tls.o uaccess.o umid.o util.o
+        tty.o umid.o util.o
 CFLAGS_user_syms.o += -DSUBARCH_$(SUBARCH)
diff --git a/arch/um/os-Linux/aio.c b/arch/um/os-Linux/aio.c
index 57e3d46c989c..c5d039e1ff3b 100644
--- a/arch/um/os-Linux/aio.c
+++ b/arch/um/os-Linux/aio.c
@@ -11,10 +11,8 @@
 #include <asm/unistd.h>
 #include "aio.h"
 #include "init.h"
-#include "kern_constants.h"
 #include "kern_util.h"
 #include "os.h"
-#include "user.h"
 struct aio_thread_req {
        enum aio_type type;
diff --git a/arch/um/os-Linux/drivers/ethertap_user.c b/arch/um/os-Linux/drivers/ethertap_user.c
index cc72cb2c1af6..db3d6481375a 100644
--- a/arch/um/os-Linux/drivers/ethertap_user.c
+++ b/arch/um/os-Linux/drivers/ethertap_user.c
@@ -13,11 +13,9 @@
 #include <sys/socket.h>
 #include <sys/wait.h>
 #include "etap.h"
-#include "kern_constants.h"
 #include "os.h"
 #include "net_user.h"
 #include "um_malloc.h"
-#include "user.h"
 #define MAX_PACKET ETH_MAX_PACKET
diff --git a/arch/um/os-Linux/drivers/tuntap_user.c b/arch/um/os-Linux/drivers/tuntap_user.c
index 2448be03fd7a..a2aacffdd907 100644
--- a/arch/um/os-Linux/drivers/tuntap_user.c
+++ b/arch/um/os-Linux/drivers/tuntap_user.c
@@ -13,11 +13,9 @@
 #include <sys/socket.h>
 #include <sys/wait.h>
 #include <sys/uio.h>
-#include "kern_constants.h"
 #include "kern_util.h"
 #include "os.h"
 #include "tuntap.h"
-#include "user.h"
 static int tuntap_user_init(void *data, void *dev)
 {
diff --git a/arch/um/os-Linux/elf_aux.c b/arch/um/os-Linux/elf_aux.c
index 953323799381..d895271ad6f7 100644
--- a/arch/um/os-Linux/elf_aux.c
+++ b/arch/um/os-Linux/elf_aux.c
@@ -12,7 +12,6 @@
 #include "init.h"
 #include "elf_user.h"
 #include "mem_user.h"
-#include <kern_constants.h>
 typedef Elf32_auxv_t elf_auxv_t;
diff --git a/arch/um/os-Linux/file.c b/arch/um/os-Linux/file.c
index 140e587bc0ad..b049a63bb74b 100644
--- a/arch/um/os-Linux/file.c
+++ b/arch/um/os-Linux/file.c
@@ -13,9 +13,7 @@
 #include <sys/socket.h>
 #include <sys/stat.h>
 #include <sys/un.h>
-#include "kern_constants.h"
 #include "os.h"
-#include "user.h"
 static void copy_stat(struct uml_stat *dst, const struct stat64 *src)
 {
diff --git a/arch/um/os-Linux/helper.c b/arch/um/os-Linux/helper.c
index feff22d64672..cf26c4a9a43a 100644
--- a/arch/um/os-Linux/helper.c
+++ b/arch/um/os-Linux/helper.c
@@ -10,11 +10,9 @@
 #include <linux/limits.h>
 #include <sys/socket.h>
 #include <sys/wait.h>
-#include "kern_constants.h"
 #include "kern_util.h"
 #include "os.h"
 #include "um_malloc.h"
-#include "user.h"
 struct helper_data {
        void (*pre_exec)(void*);
diff --git a/arch/um/os-Linux/internal.h b/arch/um/os-Linux/internal.h
new file mode 100644
index 000000000000..2c3c3ecd8c01
--- /dev/null
+++ b/arch/um/os-Linux/internal.h
@@ -0,0 +1 @@
+void alarm_handler(int, mcontext_t *);
diff --git a/arch/um/os-Linux/irq.c b/arch/um/os-Linux/irq.c
index 0348b975e81c..9a49908b576c 100644
--- a/arch/um/os-Linux/irq.c
+++ b/arch/um/os-Linux/irq.c
@@ -9,11 +9,8 @@
 #include <signal.h>
 #include <string.h>
 #include "irq_user.h"
-#include "kern_constants.h"
 #include "os.h"
-#include "process.h"
 #include "um_malloc.h"
-#include "user.h"
 /*
 * Locked by irq_lock in arch/um/kernel/irq.c.  Changed by os_create_pollfd
diff --git a/arch/um/os-Linux/main.c b/arch/um/os-Linux/main.c
index 8471b817d94f..7a86dd516eb1 100644
--- a/arch/um/os-Linux/main.c
+++ b/arch/um/os-Linux/main.c
@@ -12,7 +12,6 @@
 #include <sys/resource.h>
 #include "as-layout.h"
 #include "init.h"
-#include "kern_constants.h"
 #include "kern_util.h"
 #include "os.h"
 #include "um_malloc.h"
diff --git a/arch/um/os-Linux/mem.c b/arch/um/os-Linux/mem.c
index 62878cf1d33f..8e421e1d6d36 100644
--- a/arch/um/os-Linux/mem.c
+++ b/arch/um/os-Linux/mem.c
@@ -14,9 +14,7 @@
 #include <sys/mman.h>
 #include <sys/param.h>
 #include "init.h"
-#include "kern_constants.h"
 #include "os.h"
-#include "user.h"
 /* Modified by which_tmpdir, which is called during early boot */
 static char *default_tmpdir = "/tmp";
diff --git a/arch/um/os-Linux/process.c b/arch/um/os-Linux/process.c
index 0c45dc8efb05..307f173e7f82 100644
--- a/arch/um/os-Linux/process.c
+++ b/arch/um/os-Linux/process.c
@@ -13,12 +13,9 @@
 #include <sys/wait.h>
 #include <asm/unistd.h>
 #include "init.h"
-#include "kern_constants.h"
 #include "longjmp.h"
 #include "os.h"
-#include "process.h"
 #include "skas_ptrace.h"
-#include "user.h"
 #define ARBITRARY_ADDR -1
 #define FAILURE_PID    -1
@@ -237,21 +234,13 @@ out:
 void init_new_thread_signals(void)
 {
-        set_handler(SIGSEGV, (__sighandler_t) sig_handler, SA_ONSTACK,
+        set_handler(SIGSEGV);
-                    SIGUSR1, SIGIO, SIGWINCH, SIGVTALRM, -1);
+        set_handler(SIGTRAP);
-        set_handler(SIGTRAP, (__sighandler_t) sig_handler, SA_ONSTACK,
+        set_handler(SIGFPE);
-                    SIGUSR1, SIGIO, SIGWINCH, SIGVTALRM, -1);
+        set_handler(SIGILL);
-        set_handler(SIGFPE, (__sighandler_t) sig_handler, SA_ONSTACK,
+        set_handler(SIGBUS);
-                    SIGUSR1, SIGIO, SIGWINCH, SIGVTALRM, -1);
-        set_handler(SIGILL, (__sighandler_t) sig_handler, SA_ONSTACK,
-                    SIGUSR1, SIGIO, SIGWINCH, SIGVTALRM, -1);
-        set_handler(SIGBUS, (__sighandler_t) sig_handler, SA_ONSTACK,
-                    SIGUSR1, SIGIO, SIGWINCH, SIGVTALRM, -1);
        signal(SIGHUP, SIG_IGN);
+        set_handler(SIGIO);
-        set_handler(SIGIO, (__sighandler_t) sig_handler,
-                    SA_ONSTACK | SA_RESTART, SIGUSR1, SIGIO, SIGWINCH, SIGALRM,
-                    SIGVTALRM, -1);
        signal(SIGWINCH, SIG_IGN);
        signal(SIGTERM, SIG_DFL);
 }
diff --git a/arch/um/os-Linux/sigio.c b/arch/um/os-Linux/sigio.c
index 63d299df152b..3c161218c671 100644
--- a/arch/um/os-Linux/sigio.c
+++ b/arch/um/os-Linux/sigio.c
@@ -11,14 +11,11 @@
 #include <sched.h>
 #include <signal.h>
 #include <string.h>
-#include "kern_constants.h"
 #include "kern_util.h"
 #include "init.h"
 #include "os.h"
-#include "process.h"
 #include "sigio.h"
 #include "um_malloc.h"
-#include "user.h"
 /*
 * Protected by sigio_lock(), also used by sigio_cleanup, which is an
diff --git a/arch/um/os-Linux/signal.c b/arch/um/os-Linux/signal.c
index 6ae180703a63..2d22f1fcd8e2 100644
--- a/arch/um/os-Linux/signal.c
+++ b/arch/um/os-Linux/signal.c
@@ -12,13 +12,7 @@
 #include "as-layout.h"
 #include "kern_util.h"
 #include "os.h"
-#include "process.h"
+#include "sysdep/mcontext.h"
-#include "sysdep/barrier.h"
-#include "sysdep/sigcontext.h"
-#include "user.h"
-/* Copied from linux/compiler-gcc.h since we can't include it directly */
-#define barrier() __asm__ __volatile__("": : :"memory")
 void (*sig_info[NSIG])(int, struct uml_pt_regs *) = {
        [SIGTRAP]       = relay_signal,
@@ -30,7 +24,7 @@ void (*sig_info[NSIG])(int, struct uml_pt_regs *) = {
        [SIGIO]         = sigio_handler,
        [SIGVTALRM]     = timer_handler };
-static void sig_handler_common(int sig, struct sigcontext *sc)
+static void sig_handler_common(int sig, mcontext_t *mc)
 {
        struct uml_pt_regs r;
        int save_errno = errno;
@@ -38,8 +32,8 @@ static void sig_handler_common(int sig, struct sigcontext *sc)
        r.is_user = 0;
        if (sig == SIGSEGV) {
                /* For segfaults, we want the data from the sigcontext. */
-                copy_sc(&r, sc);
+                get_regs_from_mc(&r, mc);
-                GET_FAULTINFO_FROM_SC(r.faultinfo, sc);
+                GET_FAULTINFO_FROM_MC(r.faultinfo, mc);
        }
        /* enable signals if sig isn't IRQ signal */
@@ -66,7 +60,7 @@ static void sig_handler_common(int sig, struct sigcontext *sc)
 static int signals_enabled;
 static unsigned int signals_pending;
-void sig_handler(int sig, struct sigcontext *sc)
+void sig_handler(int sig, mcontext_t *mc)
 {
        int enabled;
@@ -78,23 +72,23 @@ void sig_handler(int sig, struct sigcontext *sc)
        block_signals();
-        sig_handler_common(sig, sc);
+        sig_handler_common(sig, mc);
        set_signals(enabled);
 }
-static void real_alarm_handler(struct sigcontext *sc)
+static void real_alarm_handler(mcontext_t *mc)
 {
        struct uml_pt_regs regs;
-        if (sc != NULL)
+        if (mc != NULL)
-                copy_sc(&regs, sc);
+                get_regs_from_mc(&regs, mc);
        regs.is_user = 0;
        unblock_signals();
        timer_handler(SIGVTALRM, &regs);
 }
-void alarm_handler(int sig, struct sigcontext *sc)
+void alarm_handler(int sig, mcontext_t *mc)
 {
        int enabled;
@@ -106,14 +100,13 @@ void alarm_handler(int sig, struct sigcontext *sc)
        block_signals();
-        real_alarm_handler(sc);
+        real_alarm_handler(mc);
        set_signals(enabled);
 }
 void timer_init(void)
 {
-        set_handler(SIGVTALRM, (__sighandler_t) alarm_handler,
+        set_handler(SIGVTALRM);
-                    SA_ONSTACK | SA_RESTART, SIGUSR1, SIGIO, SIGWINCH, -1);
 }
 void set_sigstack(void *sig_stack, int size)
@@ -126,10 +119,23 @@ void set_sigstack(void *sig_stack, int size)
                panic("enabling signal stack failed, errno = %d\n", errno);
 }
-static void (*handlers[_NSIG])(int sig, struct sigcontext *sc);
+static void (*handlers[_NSIG])(int sig, mcontext_t *mc) = {
+        [SIGSEGV] = sig_handler,
+        [SIGBUS] = sig_handler,
+        [SIGILL] = sig_handler,
+        [SIGFPE] = sig_handler,
+        [SIGTRAP] = sig_handler,
+        [SIGIO] = sig_handler,
+        [SIGWINCH] = sig_handler,
+        [SIGVTALRM] = alarm_handler
+};
-void handle_signal(int sig, struct sigcontext *sc)
+static void hard_handler(int sig, siginfo_t *info, void *p)
 {
+        struct ucontext *uc = p;
+        mcontext_t *mc = &uc->uc_mcontext;
        unsigned long pending = 1UL << sig;
        do {
@@ -155,7 +161,7 @@ void handle_signal(int sig, struct sigcontext *sc)
                while ((sig = ffs(pending)) != 0){
                        sig--;
                        pending &= ~(1 << sig);
-                        (*handlers[sig])(sig, sc);
+                        (*handlers[sig])(sig, mc);
                }
                /*
@@ -169,28 +175,26 @@ void handle_signal(int sig, struct sigcontext *sc)
        } while (pending);
 }
-extern void hard_handler(int sig);
+void set_handler(int sig)
-void set_handler(int sig, void (*handler)(int), int flags, ...)
 {
        struct sigaction action;
-        va_list ap;
+        int flags = SA_SIGINFO | SA_ONSTACK;
        sigset_t sig_mask;
-        int mask;
-        handlers[sig] = (void (*)(int, struct sigcontext *)) handler;
+        action.sa_sigaction = hard_handler;
-        action.sa_handler = hard_handler;
+        /* block irq ones */
        sigemptyset(&action.sa_mask);
+        sigaddset(&action.sa_mask, SIGVTALRM);
-        va_start(ap, flags);
+        sigaddset(&action.sa_mask, SIGIO);
-        while ((mask = va_arg(ap, int)) != -1)
+        sigaddset(&action.sa_mask, SIGWINCH);
-                sigaddset(&action.sa_mask, mask);
-        va_end(ap);
        if (sig == SIGSEGV)
                flags |= SA_NODEFER;
+        if (sigismember(&action.sa_mask, sig))
+                flags |= SA_RESTART; /* if it's an irq signal */
        action.sa_flags = flags;
        action.sa_restorer = NULL;
        if (sigaction(sig, &action, NULL) < 0)
diff --git a/arch/um/os-Linux/skas/mem.c b/arch/um/os-Linux/skas/mem.c
index e771398be5f3..c0afff7af4bd 100644
--- a/arch/um/os-Linux/skas/mem.c
+++ b/arch/um/os-Linux/skas/mem.c
@@ -9,7 +9,6 @@
 #include <string.h>
 #include <sys/mman.h>
 #include "init.h"
-#include "kern_constants.h"
 #include "as-layout.h"
 #include "mm_id.h"
 #include "os.h"
@@ -17,7 +16,6 @@
 #include "ptrace_user.h"
 #include "registers.h"
 #include "skas.h"
-#include "user.h"
 #include "sysdep/ptrace.h"
 #include "sysdep/stub.h"
diff --git a/arch/um/os-Linux/skas/process.c b/arch/um/os-Linux/skas/process.c
index dee0e8cf8ad0..cd65727854eb 100644
--- a/arch/um/os-Linux/skas/process.c
+++ b/arch/um/os-Linux/skas/process.c
@@ -9,31 +9,23 @@
 #include <errno.h>
 #include <string.h>
 #include <sys/mman.h>
-#include <sys/ptrace.h>
 #include <sys/wait.h>
 #include <asm/unistd.h>
 #include "as-layout.h"
-#include "chan_user.h"
+#include "init.h"
-#include "kern_constants.h"
 #include "kern_util.h"
 #include "mem.h"
 #include "os.h"
-#include "process.h"
 #include "proc_mm.h"
 #include "ptrace_user.h"
 #include "registers.h"
 #include "skas.h"
 #include "skas_ptrace.h"
-#include "user.h"
 #include "sysdep/stub.h"
 int is_skas_winch(int pid, int fd, void *data)
 {
-        if (pid != getpgrp())
+        return pid == getpgrp();
-                return 0;
-        register_winch_irq(-1, fd, -1, data, 0);
-        return 1;
 }
 static int ptrace_dump_regs(int pid)
@@ -169,7 +161,7 @@ static void handle_trap(int pid, struct uml_pt_regs *regs,
        if (!local_using_sysemu)
        {
-                err = ptrace(PTRACE_POKEUSR, pid, PT_SYSCALL_NR_OFFSET,
+                err = ptrace(PTRACE_POKEUSER, pid, PT_SYSCALL_NR_OFFSET,
                             __NR_getpid);
                if (err < 0) {
                        printk(UM_KERN_ERR "handle_trap - nullifying syscall "
@@ -257,8 +249,8 @@ static int userspace_tramp(void *stack)
                set_sigstack((void *) STUB_DATA, UM_KERN_PAGE_SIZE);
                sigemptyset(&sa.sa_mask);
-                sa.sa_flags = SA_ONSTACK | SA_NODEFER;
+                sa.sa_flags = SA_ONSTACK | SA_NODEFER | SA_SIGINFO;
-                sa.sa_handler = (void *) v;
+                sa.sa_sigaction = (void *) v;
                sa.sa_restorer = NULL;
                if (sigaction(SIGSEGV, &sa, NULL) < 0) {
                        printk(UM_KERN_ERR "userspace_tramp - setting SIGSEGV "
@@ -661,8 +653,7 @@ int start_idle_thread(void *stack, jmp_buf *switch_buf)
 {
        int n;
-        set_handler(SIGWINCH, (__sighandler_t) sig_handler,
+        set_handler(SIGWINCH);
-                    SA_ONSTACK | SA_RESTART, SIGUSR1, SIGIO, SIGVTALRM, -1);
        /*
         * Can't use UML_SETJMP or UML_LONGJMP here because they save
diff --git a/arch/um/os-Linux/start_up.c b/arch/um/os-Linux/start_up.c
index 02ee9adff54a..425162e22af5 100644
--- a/arch/um/os-Linux/start_up.c
+++ b/arch/um/os-Linux/start_up.c
@@ -13,12 +13,10 @@
 #include <signal.h>
 #include <string.h>
 #include <sys/mman.h>
-#include <sys/ptrace.h>
 #include <sys/stat.h>
 #include <sys/wait.h>
 #include <asm/unistd.h>
 #include "init.h"
-#include "kern_constants.h"
 #include "os.h"
 #include "mem_user.h"
 #include "ptrace_user.h"
@@ -225,7 +223,7 @@ static void __init check_sysemu(void)
                goto fail;
        }
-        n = ptrace(PTRACE_POKEUSR, pid, PT_SYSCALL_RET_OFFSET, os_getpid());
+        n = ptrace(PTRACE_POKEUSER, pid, PT_SYSCALL_RET_OFFSET, os_getpid());
        if (n < 0) {
                non_fatal("check_sysemu : failed to modify system call "
                          "return");
@@ -261,7 +259,7 @@ static void __init check_sysemu(void)
                                          "doesn't singlestep");
                                goto fail;
                        }
-                        n = ptrace(PTRACE_POKEUSR, pid, PT_SYSCALL_RET_OFFSET,
+                        n = ptrace(PTRACE_POKEUSER, pid, PT_SYSCALL_RET_OFFSET,
                                   os_getpid());
                        if (n < 0)
                                fatal_perror("check_sysemu : failed to modify "
@@ -317,10 +315,10 @@ static void __init check_ptrace(void)
                        fatal("check_ptrace : expected (SIGTRAP|0x80), "
                               "got status = %d", status);
-                syscall = ptrace(PTRACE_PEEKUSR, pid, PT_SYSCALL_NR_OFFSET,
+                syscall = ptrace(PTRACE_PEEKUSER, pid, PT_SYSCALL_NR_OFFSET,
                                 0);
                if (syscall == __NR_getpid) {
-                        n = ptrace(PTRACE_POKEUSR, pid, PT_SYSCALL_NR_OFFSET,
+                        n = ptrace(PTRACE_POKEUSER, pid, PT_SYSCALL_NR_OFFSET,
                                   __NR_getppid);
                        if (n < 0)
                                fatal_perror("check_ptrace : failed to modify "
diff --git a/arch/um/os-Linux/sys-i386/Makefile b/arch/um/os-Linux/sys-i386/Makefile
deleted file mode 100644
index b4bc6ac4f30b..000000000000
--- a/arch/um/os-Linux/sys-i386/Makefile
+++ /dev/null
@@ -1,10 +0,0 @@
-#
-# Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
-# Licensed under the GPL
-#
-obj-y = registers.o signal.o task_size.o tls.o
-USER_OBJS := $(obj-y)
-include arch/um/scripts/Makefile.rules
diff --git a/arch/um/os-Linux/sys-i386/registers.c b/arch/um/os-Linux/sys-i386/registers.c
deleted file mode 100644
index 229f7a53d8da..000000000000
--- a/arch/um/os-Linux/sys-i386/registers.c
+++ /dev/null
@@ -1,91 +0,0 @@
-/*
- * Copyright (C) 2004 PathScale, Inc
- * Copyright (C) 2004 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
- * Licensed under the GPL
- */
-#include <errno.h>
-#include <sys/ptrace.h>
-#include <sys/user.h>
-#include "kern_constants.h"
-#include "longjmp.h"
-#include "user.h"
-#include "sysdep/ptrace_user.h"
-int save_fp_registers(int pid, unsigned long *fp_regs)
-{
-        if (ptrace(PTRACE_GETFPREGS, pid, 0, fp_regs) < 0)
-                return -errno;
-        return 0;
-}
-int restore_fp_registers(int pid, unsigned long *fp_regs)
-{
-        if (ptrace(PTRACE_SETFPREGS, pid, 0, fp_regs) < 0)
-                return -errno;
-        return 0;
-}
-int save_fpx_registers(int pid, unsigned long *fp_regs)
-{
-        if (ptrace(PTRACE_GETFPXREGS, pid, 0, fp_regs) < 0)
-                return -errno;
-        return 0;
-}
-int restore_fpx_registers(int pid, unsigned long *fp_regs)
-{
-        if (ptrace(PTRACE_SETFPXREGS, pid, 0, fp_regs) < 0)
-                return -errno;
-        return 0;
-}
-unsigned long get_thread_reg(int reg, jmp_buf *buf)
-{
-        switch (reg) {
-        case EIP:
-                return buf[0]->__eip;
-        case UESP:
-                return buf[0]->__esp;
-        case EBP:
-                return buf[0]->__ebp;
-        default:
-                printk(UM_KERN_ERR "get_thread_regs - unknown register %d\n",
-                       reg);
-                return 0;
-        }
-}
-int have_fpx_regs = 1;
-int get_fp_registers(int pid, unsigned long *regs)
-{
-        if (have_fpx_regs)
-                return save_fpx_registers(pid, regs);
-        else
-                return save_fp_registers(pid, regs);
-}
-int put_fp_registers(int pid, unsigned long *regs)
-{
-        if (have_fpx_regs)
-                return restore_fpx_registers(pid, regs);
-        else
-                return restore_fp_registers(pid, regs);
-}
-void arch_init_registers(int pid)
-{
-        struct user_fpxregs_struct fpx_regs;
-        int err;
-        err = ptrace(PTRACE_GETFPXREGS, pid, 0, &fpx_regs);
-        if (!err)
-                return;
-        if (errno != EIO)
-                panic("check_ptrace : PTRACE_GETFPXREGS failed, errno = %d",
-                      errno);
-        have_fpx_regs = 0;
-}
diff --git a/arch/um/os-Linux/sys-i386/signal.c b/arch/um/os-Linux/sys-i386/signal.c
deleted file mode 100644
index f311609f93da..000000000000
--- a/arch/um/os-Linux/sys-i386/signal.c
+++ /dev/null
@@ -1,13 +0,0 @@
-/*
- * Copyright (C) 2006 Jeff Dike (jdike@{addtoit,linux.intel}.com)
- * Licensed under the GPL
- */
-#include <signal.h>
-extern void handle_signal(int sig, struct sigcontext *sc);
-void hard_handler(int sig)
-{
-        handle_signal(sig, (struct sigcontext *) (&sig + 1));
-}
diff --git a/arch/um/os-Linux/sys-i386/task_size.c b/arch/um/os-Linux/sys-i386/task_size.c
deleted file mode 100644
index be04c1e183bf..000000000000
--- a/arch/um/os-Linux/sys-i386/task_size.c
+++ /dev/null
@@ -1,139 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-#include <signal.h>
-#include <sys/mman.h>
-#include "longjmp.h"
-#include "kern_constants.h"
-static jmp_buf buf;
-static void segfault(int sig)
-{
-        longjmp(buf, 1);
-}
-static int page_ok(unsigned long page)
-{
-        unsigned long *address = (unsigned long *) (page << UM_KERN_PAGE_SHIFT);
-        unsigned long n = ~0UL;
-        void *mapped = NULL;
-        int ok = 0;
-        /*
-         * First see if the page is readable.  If it is, it may still
-         * be a VDSO, so we go on to see if it's writable.  If not
-         * then try mapping memory there.  If that fails, then we're
-         * still in the kernel area.  As a sanity check, we'll fail if
-         * the mmap succeeds, but gives us an address different from
-         * what we wanted.
-         */
-        if (setjmp(buf) == 0)
-                n = *address;
-        else {
-                mapped = mmap(address, UM_KERN_PAGE_SIZE,
-                              PROT_READ | PROT_WRITE,
-                              MAP_FIXED | MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
-                if (mapped == MAP_FAILED)
-                        return 0;
-                if (mapped != address)
-                        goto out;
-        }
-        /*
-         * Now, is it writeable?  If so, then we're in user address
-         * space.  If not, then try mprotecting it and try the write
-         * again.
-         */
-        if (setjmp(buf) == 0) {
-                *address = n;
-                ok = 1;
-                goto out;
-        } else if (mprotect(address, UM_KERN_PAGE_SIZE,
-                            PROT_READ | PROT_WRITE) != 0)
-                goto out;
-        if (setjmp(buf) == 0) {
-                *address = n;
-                ok = 1;
-        }
- out:
-        if (mapped != NULL)
-                munmap(mapped, UM_KERN_PAGE_SIZE);
-        return ok;
-}
-unsigned long os_get_top_address(void)
-{
-        struct sigaction sa, old;
-        unsigned long bottom = 0;
-        /*
-         * A 32-bit UML on a 64-bit host gets confused about the VDSO at
-         * 0xffffe000.  It is mapped, is readable, can be reprotected writeable
-         * and written.  However, exec discovers later that it can't be
-         * unmapped.  So, just set the highest address to be checked to just
-         * below it.  This might waste some address space on 4G/4G 32-bit
-         * hosts, but shouldn't hurt otherwise.
-         */
-        unsigned long top = 0xffffd000 >> UM_KERN_PAGE_SHIFT;
-        unsigned long test, original;
-        printf("Locating the bottom of the address space ... ");
-        fflush(stdout);
-        /*
-         * We're going to be longjmping out of the signal handler, so
-         * SA_DEFER needs to be set.
-         */
-        sa.sa_handler = segfault;
-        sigemptyset(&sa.sa_mask);
-        sa.sa_flags = SA_NODEFER;
-        if (sigaction(SIGSEGV, &sa, &old)) {
-                perror("os_get_top_address");
-                exit(1);
-        }
-        /* Manually scan the address space, bottom-up, until we find
-         * the first valid page (or run out of them).
-         */
-        for (bottom = 0; bottom < top; bottom++) {
-                if (page_ok(bottom))
-                        break;
-        }
-        /* If we've got this far, we ran out of pages. */
-        if (bottom == top) {
-                fprintf(stderr, "Unable to determine bottom of address "
-                        "space.\n");
-                exit(1);
-        }
-        printf("0x%x\n", bottom << UM_KERN_PAGE_SHIFT);
-        printf("Locating the top of the address space ... ");
-        fflush(stdout);
-        original = bottom;
-        /* This could happen with a 4G/4G split */
-        if (page_ok(top))
-                goto out;
-        do {
-                test = bottom + (top - bottom) / 2;
-                if (page_ok(test))
-                        bottom = test;
-                else
-                        top = test;
-        } while (top - bottom > 1);
-out:
-        /* Restore the old SIGSEGV handling */
-        if (sigaction(SIGSEGV, &old, NULL)) {
-                perror("os_get_top_address");
-                exit(1);
-        }
-        top <<= UM_KERN_PAGE_SHIFT;
-        printf("0x%x\n", top);
-        return top;
-}
diff --git a/arch/um/os-Linux/sys-i386/tls.c b/arch/um/os-Linux/sys-i386/tls.c
deleted file mode 100644
index 32ed41ec1a3d..000000000000
--- a/arch/um/os-Linux/sys-i386/tls.c
+++ /dev/null
@@ -1,36 +0,0 @@
-#include <errno.h>
-#include <linux/unistd.h>
-#include <sys/syscall.h>
-#include <unistd.h>
-#include "sysdep/tls.h"
-#include "user.h"
-/* Checks whether host supports TLS, and sets *tls_min according to the value
- * valid on the host.
- * i386 host have it == 6; x86_64 host have it == 12, for i386 emulation. */
-void check_host_supports_tls(int *supports_tls, int *tls_min) {
-        /* Values for x86 and x86_64.*/
-        int val[] = {GDT_ENTRY_TLS_MIN_I386, GDT_ENTRY_TLS_MIN_X86_64};
-        int i;
-        for (i = 0; i < ARRAY_SIZE(val); i++) {
-                user_desc_t info;
-                info.entry_number = val[i];
-                if (syscall(__NR_get_thread_area, &info) == 0) {
-                        *tls_min = val[i];
-                        *supports_tls = 1;
-                        return;
-                } else {
-                        if (errno == EINVAL)
-                                continue;
-                        else if (errno == ENOSYS)
-                                *supports_tls = 0;
-                                return;
-                }
-        }
-        *supports_tls = 0;
-}
diff --git a/arch/um/os-Linux/sys-x86_64/Makefile b/arch/um/os-Linux/sys-x86_64/Makefile
deleted file mode 100644
index a44a47f8f57b..000000000000
--- a/arch/um/os-Linux/sys-x86_64/Makefile
+++ /dev/null
@@ -1,10 +0,0 @@
-#
-# Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
-# Licensed under the GPL
-#
-obj-y = registers.o prctl.o signal.o task_size.o
-USER_OBJS := $(obj-y)
-include arch/um/scripts/Makefile.rules
diff --git a/arch/um/os-Linux/sys-x86_64/prctl.c b/arch/um/os-Linux/sys-x86_64/prctl.c
deleted file mode 100644
index 9d34eddb517f..000000000000
--- a/arch/um/os-Linux/sys-x86_64/prctl.c
+++ /dev/null
@@ -1,12 +0,0 @@
-/*
- * Copyright (C) 2007 Jeff Dike (jdike@{addtoit.com,linux.intel.com})
- * Licensed under the GPL
- */
-#include <sys/ptrace.h>
-#include <linux/ptrace.h>
-int os_arch_prctl(int pid, int code, unsigned long *addr)
-{
-        return ptrace(PTRACE_ARCH_PRCTL, pid, (unsigned long) addr, code);
-}
diff --git a/arch/um/os-Linux/sys-x86_64/registers.c b/arch/um/os-Linux/sys-x86_64/registers.c
deleted file mode 100644
index 594d97ad02b3..000000000000
--- a/arch/um/os-Linux/sys-x86_64/registers.c
+++ /dev/null
@@ -1,52 +0,0 @@
-/*
- * Copyright (C) 2006 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
- * Licensed under the GPL
- */
-#include <errno.h>
-#include <sys/ptrace.h>
-#define __FRAME_OFFSETS
-#include <asm/ptrace.h>
-#include "kern_constants.h"
-#include "longjmp.h"
-#include "user.h"
-int save_fp_registers(int pid, unsigned long *fp_regs)
-{
-        if (ptrace(PTRACE_GETFPREGS, pid, 0, fp_regs) < 0)
-                return -errno;
-        return 0;
-}
-int restore_fp_registers(int pid, unsigned long *fp_regs)
-{
-        if (ptrace(PTRACE_SETFPREGS, pid, 0, fp_regs) < 0)
-                return -errno;
-        return 0;
-}
-unsigned long get_thread_reg(int reg, jmp_buf *buf)
-{
-        switch (reg) {
-        case RIP:
-                return buf[0]->__rip;
-        case RSP:
-                return buf[0]->__rsp;
-        case RBP:
-                return buf[0]->__rbp;
-        default:
-                printk(UM_KERN_ERR "get_thread_regs - unknown register %d\n",
-                       reg);
-                return 0;
-        }
-}
-int get_fp_registers(int pid, unsigned long *regs)
-{
-        return save_fp_registers(pid, regs);
-}
-int put_fp_registers(int pid, unsigned long *regs)
-{
-        return restore_fp_registers(pid, regs);
-}
diff --git a/arch/um/os-Linux/sys-x86_64/signal.c b/arch/um/os-Linux/sys-x86_64/signal.c
deleted file mode 100644
index 82a388822cd3..000000000000
--- a/arch/um/os-Linux/sys-x86_64/signal.c
+++ /dev/null
@@ -1,16 +0,0 @@
-/*
- * Copyright (C) 2006 Jeff Dike (jdike@{addtoit,linux.intel}.com)
- * Licensed under the GPL
- */
-#include <signal.h>
-extern void handle_signal(int sig, struct sigcontext *sc);
-void hard_handler(int sig)
-{
-        struct ucontext *uc;
-        asm("movq %%rdx, %0" : "=r" (uc));
-        handle_signal(sig, (struct sigcontext *) &uc->uc_mcontext);
-}
diff --git a/arch/um/os-Linux/sys-x86_64/task_size.c b/arch/um/os-Linux/sys-x86_64/task_size.c
deleted file mode 100644
index 26a0dd1f349c..000000000000
--- a/arch/um/os-Linux/sys-x86_64/task_size.c
+++ /dev/null
@@ -1,5 +0,0 @@
-unsigned long os_get_top_address(unsigned long shift)
-{
-        /* The old value of CONFIG_TOP_ADDR */
-        return 0x7fc0000000;
-}
diff --git a/arch/um/os-Linux/time.c b/arch/um/os-Linux/time.c
index 6e3359d6a839..910499d76a67 100644
--- a/arch/um/os-Linux/time.c
+++ b/arch/um/os-Linux/time.c
@@ -8,11 +8,9 @@
 #include <signal.h>
 #include <time.h>
 #include <sys/time.h>
-#include "kern_constants.h"
 #include "kern_util.h"
 #include "os.h"
-#include "process.h"
+#include "internal.h"
-#include "user.h"
 int set_interval(void)
 {
diff --git a/arch/um/os-Linux/tls.c b/arch/um/os-Linux/tls.c
deleted file mode 100644
index 73277801ef14..000000000000
--- a/arch/um/os-Linux/tls.c
+++ /dev/null
@@ -1,35 +0,0 @@
-#include <errno.h>
-#include <sys/ptrace.h>
-#include "sysdep/tls.h"
-/* TLS support - we basically rely on the host's one.*/
-#ifndef PTRACE_GET_THREAD_AREA
-#define PTRACE_GET_THREAD_AREA 25
-#endif
-#ifndef PTRACE_SET_THREAD_AREA
-#define PTRACE_SET_THREAD_AREA 26
-#endif
-int os_set_thread_area(user_desc_t *info, int pid)
-{
-        int ret;
-        ret = ptrace(PTRACE_SET_THREAD_AREA, pid, info->entry_number,
-                     (unsigned long) info);
-        if (ret < 0)
-                ret = -errno;
-        return ret;
-}
-int os_get_thread_area(user_desc_t *info, int pid)
-{
-        int ret;
-        ret = ptrace(PTRACE_GET_THREAD_AREA, pid, info->entry_number,
-                     (unsigned long) info);
-        if (ret < 0)
-                ret = -errno;
-        return ret;
-}
diff --git a/arch/um/os-Linux/tty.c b/arch/um/os-Linux/tty.c
index b09ff66a77ee..dd12b99dcb59 100644
--- a/arch/um/os-Linux/tty.c
+++ b/arch/um/os-Linux/tty.c
@@ -7,10 +7,8 @@
 #include <unistd.h>
 #include <errno.h>
 #include <fcntl.h>
-#include "kern_constants.h"
 #include "kern_util.h"
 #include "os.h"
-#include "user.h"
 struct grantpt_info {
        int fd;
diff --git a/arch/um/os-Linux/uaccess.c b/arch/um/os-Linux/uaccess.c
deleted file mode 100644
index 087ed74ffca5..000000000000
--- a/arch/um/os-Linux/uaccess.c
+++ /dev/null
@@ -1,32 +0,0 @@
-/*
- * Copyright (C) 2001 Chris Emerson (cemerson@chiark.greenend.org.uk)
- * Copyright (C) 2001 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
- * Licensed under the GPL
- */
-#include <stddef.h>
-#include "longjmp.h"
-unsigned long __do_user_copy(void *to, const void *from, int n,
-                             void **fault_addr, jmp_buf **fault_catcher,
-                             void (*op)(void *to, const void *from,
-                                        int n), int *faulted_out)
-{
-        unsigned long *faddrp = (unsigned long *) fault_addr, ret;
-        jmp_buf jbuf;
-        *fault_catcher = &jbuf;
-        if (UML_SETJMP(&jbuf) == 0) {
-                (*op)(to, from, n);
-                ret = 0;
-                *faulted_out = 0;
-        }
-        else {
-                ret = *faddrp;
-                *faulted_out = 1;
-        }
-        *fault_addr = NULL;
-        *fault_catcher = NULL;
-        return ret;
-}
diff --git a/arch/um/os-Linux/umid.c b/arch/um/os-Linux/umid.c
index a27defb81884..4832eb519f8d 100644
--- a/arch/um/os-Linux/umid.c
+++ b/arch/um/os-Linux/umid.c
@@ -13,9 +13,7 @@
 #include <unistd.h>
 #include <sys/stat.h>
 #include "init.h"
-#include "kern_constants.h"
 #include "os.h"
-#include "user.h"
 #define UML_DIR "~/.uml/"
diff --git a/arch/um/os-Linux/util.c b/arch/um/os-Linux/util.c
index 5803b1887672..9e3b43bb84c9 100644
--- a/arch/um/os-Linux/util.c
+++ b/arch/um/os-Linux/util.c
@@ -13,9 +13,7 @@
 #include <wait.h>
 #include <sys/mman.h>
 #include <sys/utsname.h>
-#include "kern_constants.h"
 #include "os.h"
-#include "user.h"
 void stack_protections(unsigned long address)
 {
diff --git a/arch/um/scripts/Makefile.rules b/arch/um/scripts/Makefile.rules
index 61107b68e05b..2eb2843b0634 100644
--- a/arch/um/scripts/Makefile.rules
+++ b/arch/um/scripts/Makefile.rules
@@ -8,7 +8,7 @@ USER_OBJS += $(filter %_user.o,$(obj-y) $(obj-m)  $(USER_SINGLE_OBJS))
 USER_OBJS := $(foreach file,$(USER_OBJS),$(obj)/$(file))
 $(USER_OBJS:.o=.%): \
-        c_flags = -Wp,-MD,$(depfile) $(USER_CFLAGS) $(CFLAGS_$(basetarget).o)
+        c_flags = -Wp,-MD,$(depfile) $(USER_CFLAGS) -include user.h $(CFLAGS_$(basetarget).o)
 $(USER_OBJS) : CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ \
        -Dunix -D__unix__ -D__$(SUBARCH)__ $(CF)
@@ -25,8 +25,3 @@ $(UNPROFILE_OBJS) : CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ \
 define unprofile
        $(patsubst -pg,,$(patsubst -fprofile-arcs -ftest-coverage,,$(1)))
 endef
-ifdef subarch-obj-y
-obj-y += subarch.o
-subarch-y = $(addprefix ../../$(HEADER_ARCH)/,$(subarch-obj-y))
-endif
diff --git a/arch/um/sys-i386/Makefile b/arch/um/sys-i386/Makefile
deleted file mode 100644
index 3923cfb87649..000000000000
--- a/arch/um/sys-i386/Makefile
+++ /dev/null
@@ -1,24 +0,0 @@
-#
-# Copyright (C) 2002 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
-#
-obj-y = bug.o bugs.o checksum.o delay.o fault.o ksyms.o ldt.o ptrace.o \
-        ptrace_user.o setjmp.o signal.o stub.o stub_segv.o syscalls.o sysrq.o \
-        sys_call_table.o tls.o atomic64_cx8_32.o mem.o
-obj-$(CONFIG_BINFMT_ELF) += elfcore.o
-subarch-obj-y = lib/string_32.o
-subarch-obj-$(CONFIG_RWSEM_XCHGADD_ALGORITHM) += lib/rwsem.o
-subarch-obj-$(CONFIG_HIGHMEM) += mm/highmem_32.o
-subarch-obj-$(CONFIG_MODULES) += kernel/module.o
-USER_OBJS := bugs.o ptrace_user.o fault.o
-USER_OBJS += user-offsets.s
-extra-y += user-offsets.s
-UNPROFILE_OBJS := stub_segv.o
-CFLAGS_stub_segv.o := $(CFLAGS_NO_HARDENING)
-include arch/um/scripts/Makefile.rules
diff --git a/arch/um/sys-i386/asm/archparam.h b/arch/um/sys-i386/asm/archparam.h
deleted file mode 100644
index 2a18a884ca1b..000000000000
--- a/arch/um/sys-i386/asm/archparam.h
+++ /dev/null
@@ -1,16 +0,0 @@
-/* 
- * Copyright (C) 2000 - 2003 Jeff Dike (jdike@addtoit.com)
- * Licensed under the GPL
- */
-#ifndef __UM_ARCHPARAM_I386_H
-#define __UM_ARCHPARAM_I386_H
-#ifdef CONFIG_X86_PAE
-#define LAST_PKMAP 512
-#else
-#define LAST_PKMAP 1024
-#endif
-#endif
diff --git a/arch/um/sys-i386/asm/elf.h b/arch/um/sys-i386/asm/elf.h
deleted file mode 100644
index 42305551d204..000000000000
--- a/arch/um/sys-i386/asm/elf.h
+++ /dev/null
@@ -1,125 +0,0 @@
-/*
- * Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
- * Licensed under the GPL
- */
-#ifndef __UM_ELF_I386_H
-#define __UM_ELF_I386_H
-#include <asm/user.h>
-#include "skas.h"
-#define R_386_NONE      0
-#define R_386_32        1
-#define R_386_PC32      2
-#define R_386_GOT32     3
-#define R_386_PLT32     4
-#define R_386_COPY      5
-#define R_386_GLOB_DAT  6
-#define R_386_JMP_SLOT  7
-#define R_386_RELATIVE  8
-#define R_386_GOTOFF    9
-#define R_386_GOTPC     10
-#define R_386_NUM       11
-typedef unsigned long elf_greg_t;
-#define ELF_NGREG (sizeof (struct user_regs_struct) / sizeof(elf_greg_t))
-typedef elf_greg_t elf_gregset_t[ELF_NGREG];
-typedef struct user_i387_struct elf_fpregset_t;
-/*
- * This is used to ensure we don't load something for the wrong architecture.
- */
-#define elf_check_arch(x) \
-        (((x)->e_machine == EM_386) || ((x)->e_machine == EM_486))
-#define ELF_CLASS       ELFCLASS32
-#define ELF_DATA        ELFDATA2LSB
-#define ELF_ARCH        EM_386
-#define ELF_PLAT_INIT(regs, load_addr) do { \
-        PT_REGS_EBX(regs) = 0; \
-        PT_REGS_ECX(regs) = 0; \
-        PT_REGS_EDX(regs) = 0; \
-        PT_REGS_ESI(regs) = 0; \
-        PT_REGS_EDI(regs) = 0; \
-        PT_REGS_EBP(regs) = 0; \
-        PT_REGS_EAX(regs) = 0; \
-} while (0)
-#define ELF_EXEC_PAGESIZE 4096
-#define ELF_ET_DYN_BASE (2 * TASK_SIZE / 3)
-/* Shamelessly stolen from include/asm-i386/elf.h */
-#define ELF_CORE_COPY_REGS(pr_reg, regs) do {   \
-        pr_reg[0] = PT_REGS_EBX(regs);          \
-        pr_reg[1] = PT_REGS_ECX(regs);          \
-        pr_reg[2] = PT_REGS_EDX(regs);          \
-        pr_reg[3] = PT_REGS_ESI(regs);          \
-        pr_reg[4] = PT_REGS_EDI(regs);          \
-        pr_reg[5] = PT_REGS_EBP(regs);          \
-        pr_reg[6] = PT_REGS_EAX(regs);          \
-        pr_reg[7] = PT_REGS_DS(regs);           \
-        pr_reg[8] = PT_REGS_ES(regs);           \
-        /* fake once used fs and gs selectors? */       \
-        pr_reg[9] = PT_REGS_DS(regs);           \
-        pr_reg[10] = PT_REGS_DS(regs);          \
-        pr_reg[11] = PT_REGS_SYSCALL_NR(regs);  \
-        pr_reg[12] = PT_REGS_IP(regs);          \
-        pr_reg[13] = PT_REGS_CS(regs);          \
-        pr_reg[14] = PT_REGS_EFLAGS(regs);      \
-        pr_reg[15] = PT_REGS_SP(regs);          \
-        pr_reg[16] = PT_REGS_SS(regs);          \
-} while (0);
-#define task_pt_regs(t) (&(t)->thread.regs)
-struct task_struct;
-extern int elf_core_copy_fpregs(struct task_struct *t, elf_fpregset_t *fpu);
-#define ELF_CORE_COPY_FPREGS(t, fpu) elf_core_copy_fpregs(t, fpu)
-extern long elf_aux_hwcap;
-#define ELF_HWCAP (elf_aux_hwcap)
-extern char * elf_aux_platform;
-#define ELF_PLATFORM (elf_aux_platform)
-#define SET_PERSONALITY(ex) do { } while (0)
-extern unsigned long vsyscall_ehdr;
-extern unsigned long vsyscall_end;
-extern unsigned long __kernel_vsyscall;
-#define VSYSCALL_BASE vsyscall_ehdr
-#define VSYSCALL_END vsyscall_end
-/*
- * This is the range that is readable by user mode, and things
- * acting like user mode such as get_user_pages.
- */
-#define FIXADDR_USER_START      VSYSCALL_BASE
-#define FIXADDR_USER_END        VSYSCALL_END
-#define __HAVE_ARCH_GATE_AREA 1
-/*
- * Architecture-neutral AT_ values in 0-17, leave some room
- * for more of them, start the x86-specific ones at 32.
- */
-#define AT_SYSINFO              32
-#define AT_SYSINFO_EHDR         33
-#define ARCH_DLINFO                                             \
-do {                                                            \
-        if ( vsyscall_ehdr ) {                                  \
-                NEW_AUX_ENT(AT_SYSINFO, __kernel_vsyscall);     \
-                NEW_AUX_ENT(AT_SYSINFO_EHDR, vsyscall_ehdr);    \
-        }                                                       \
-} while (0)
-#endif
diff --git a/arch/um/sys-i386/asm/module.h b/arch/um/sys-i386/asm/module.h
deleted file mode 100644
index 5ead4a0b2e35..000000000000
--- a/arch/um/sys-i386/asm/module.h
+++ /dev/null
@@ -1,13 +0,0 @@
-#ifndef __UM_MODULE_I386_H
-#define __UM_MODULE_I386_H
-/* UML is simple */
-struct mod_arch_specific
-{
-};
-#define Elf_Shdr Elf32_Shdr
-#define Elf_Sym Elf32_Sym
-#define Elf_Ehdr Elf32_Ehdr
-#endif
diff --git a/arch/um/sys-i386/asm/processor.h b/arch/um/sys-i386/asm/processor.h
deleted file mode 100644
index 82a9061ab5be..000000000000
--- a/arch/um/sys-i386/asm/processor.h
+++ /dev/null
@@ -1,78 +0,0 @@
-/*
- * Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
- * Licensed under the GPL
- */
-#ifndef __UM_PROCESSOR_I386_H
-#define __UM_PROCESSOR_I386_H
-#include "linux/string.h"
-#include <sysdep/host_ldt.h>
-#include "asm/segment.h"
-extern int host_has_cmov;
-/* include faultinfo structure */
-#include "sysdep/faultinfo.h"
-struct uml_tls_struct {
-        struct user_desc tls;
-        unsigned flushed:1;
-        unsigned present:1;
-};
-struct arch_thread {
-        struct uml_tls_struct tls_array[GDT_ENTRY_TLS_ENTRIES];
-        unsigned long debugregs[8];
-        int debugregs_seq;
-        struct faultinfo faultinfo;
-};
-#define INIT_ARCH_THREAD { \
-        .tls_array              = { [ 0 ... GDT_ENTRY_TLS_ENTRIES - 1 ] = \
-                                    { .present = 0, .flushed = 0 } }, \
-        .debugregs              = { [ 0 ... 7 ] = 0 }, \
-        .debugregs_seq          = 0, \
-        .faultinfo              = { 0, 0, 0 } \
-}
-static inline void arch_flush_thread(struct arch_thread *thread)
-{
-        /* Clear any TLS still hanging */
-        memset(&thread->tls_array, 0, sizeof(thread->tls_array));
-}
-static inline void arch_copy_thread(struct arch_thread *from,
-                                    struct arch_thread *to)
-{
-        memcpy(&to->tls_array, &from->tls_array, sizeof(from->tls_array));
-}
-#include <asm/user.h>
-/* REP NOP (PAUSE) is a good thing to insert into busy-wait loops. */
-static inline void rep_nop(void)
-{
-        __asm__ __volatile__("rep;nop": : :"memory");
-}
-#define cpu_relax()     rep_nop()
-/*
- * Default implementation of macro that returns current
- * instruction pointer ("program counter"). Stolen
- * from asm-i386/processor.h
- */
-#define current_text_addr() \
-        ({ void *pc; __asm__("movl $1f,%0\n1:":"=g" (pc)); pc; })
-#define ARCH_IS_STACKGROW(address) \
-       (address + 32 >= UPT_SP(&current->thread.regs.regs))
-#define KSTK_EIP(tsk) KSTK_REG(tsk, EIP)
-#define KSTK_ESP(tsk) KSTK_REG(tsk, UESP)
-#define KSTK_EBP(tsk) KSTK_REG(tsk, EBP)
-#include "asm/processor-generic.h"
-#endif
diff --git a/arch/um/sys-i386/asm/ptrace.h b/arch/um/sys-i386/asm/ptrace.h
deleted file mode 100644
index 5d2a59112537..000000000000
--- a/arch/um/sys-i386/asm/ptrace.h
+++ /dev/null
@@ -1,51 +0,0 @@
-/* 
- * Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
- * Licensed under the GPL
- */
-#ifndef __UM_PTRACE_I386_H
-#define __UM_PTRACE_I386_H
-#define HOST_AUDIT_ARCH AUDIT_ARCH_I386
-#include "linux/compiler.h"
-#include "asm/ptrace-generic.h"
-#define PT_REGS_EAX(r) UPT_EAX(&(r)->regs)
-#define PT_REGS_EBX(r) UPT_EBX(&(r)->regs)
-#define PT_REGS_ECX(r) UPT_ECX(&(r)->regs)
-#define PT_REGS_EDX(r) UPT_EDX(&(r)->regs)
-#define PT_REGS_ESI(r) UPT_ESI(&(r)->regs)
-#define PT_REGS_EDI(r) UPT_EDI(&(r)->regs)
-#define PT_REGS_EBP(r) UPT_EBP(&(r)->regs)
-#define PT_REGS_CS(r) UPT_CS(&(r)->regs)
-#define PT_REGS_SS(r) UPT_SS(&(r)->regs)
-#define PT_REGS_DS(r) UPT_DS(&(r)->regs)
-#define PT_REGS_ES(r) UPT_ES(&(r)->regs)
-#define PT_REGS_FS(r) UPT_FS(&(r)->regs)
-#define PT_REGS_GS(r) UPT_GS(&(r)->regs)
-#define PT_REGS_EFLAGS(r) UPT_EFLAGS(&(r)->regs)
-#define PT_REGS_ORIG_SYSCALL(r) PT_REGS_EAX(r)
-#define PT_REGS_SYSCALL_RET(r) PT_REGS_EAX(r)
-#define PT_FIX_EXEC_STACK(sp) do ; while(0)
-#define profile_pc(regs) PT_REGS_IP(regs)
-#define user_mode(r) UPT_IS_USER(&(r)->regs)
-/*
- * Forward declaration to avoid including sysdep/tls.h, which causes a
- * circular include, and compilation failures.
- */
-struct user_desc;
-extern int ptrace_get_thread_area(struct task_struct *child, int idx,
-                                  struct user_desc __user *user_desc);
-extern int ptrace_set_thread_area(struct task_struct *child, int idx,
-                                  struct user_desc __user *user_desc);
-#endif
diff --git a/arch/um/sys-i386/atomic64_cx8_32.S b/arch/um/sys-i386/atomic64_cx8_32.S
deleted file mode 100644
index 1e901d3d4a95..000000000000
--- a/arch/um/sys-i386/atomic64_cx8_32.S
+++ /dev/null
@@ -1,225 +0,0 @@
-/*
- * atomic64_t for 586+
- *
- * Copied from arch/x86/lib/atomic64_cx8_32.S
- *
- * Copyright © 2010  Luca Barbieri
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- */
-#include <linux/linkage.h>
-#include <asm/alternative-asm.h>
-#include <asm/dwarf2.h>
-.macro SAVE reg
-        pushl_cfi %\reg
-        CFI_REL_OFFSET \reg, 0
-.endm
-.macro RESTORE reg
-        popl_cfi %\reg
-        CFI_RESTORE \reg
-.endm
-.macro read64 reg
-        movl %ebx, %eax
-        movl %ecx, %edx
-/* we need LOCK_PREFIX since otherwise cmpxchg8b always does the write */
-        LOCK_PREFIX
-        cmpxchg8b (\reg)
-.endm
-ENTRY(atomic64_read_cx8)
-        CFI_STARTPROC
-        read64 %ecx
-        ret
-        CFI_ENDPROC
-ENDPROC(atomic64_read_cx8)
-ENTRY(atomic64_set_cx8)
-        CFI_STARTPROC
-1:
-/* we don't need LOCK_PREFIX since aligned 64-bit writes
- * are atomic on 586 and newer */
-        cmpxchg8b (%esi)
-        jne 1b
-        ret
-        CFI_ENDPROC
-ENDPROC(atomic64_set_cx8)
-ENTRY(atomic64_xchg_cx8)
-        CFI_STARTPROC
-        movl %ebx, %eax
-        movl %ecx, %edx
-1:
-        LOCK_PREFIX
-        cmpxchg8b (%esi)
-        jne 1b
-        ret
-        CFI_ENDPROC
-ENDPROC(atomic64_xchg_cx8)
-.macro addsub_return func ins insc
-ENTRY(atomic64_\func\()_return_cx8)
-        CFI_STARTPROC
-        SAVE ebp
-        SAVE ebx
-        SAVE esi
-        SAVE edi
-        movl %eax, %esi
-        movl %edx, %edi
-        movl %ecx, %ebp
-        read64 %ebp
-1:
-        movl %eax, %ebx
-        movl %edx, %ecx
-        \ins\()l %esi, %ebx
-        \insc\()l %edi, %ecx
-        LOCK_PREFIX
-        cmpxchg8b (%ebp)
-        jne 1b
-10:
-        movl %ebx, %eax
-        movl %ecx, %edx
-        RESTORE edi
-        RESTORE esi
-        RESTORE ebx
-        RESTORE ebp
-        ret
-        CFI_ENDPROC
-ENDPROC(atomic64_\func\()_return_cx8)
-.endm
-addsub_return add add adc
-addsub_return sub sub sbb
-.macro incdec_return func ins insc
-ENTRY(atomic64_\func\()_return_cx8)
-        CFI_STARTPROC
-        SAVE ebx
-        read64 %esi
-1:
-        movl %eax, %ebx
-        movl %edx, %ecx
-        \ins\()l $1, %ebx
-        \insc\()l $0, %ecx
-        LOCK_PREFIX
-        cmpxchg8b (%esi)
-        jne 1b
-10:
-        movl %ebx, %eax
-        movl %ecx, %edx
-        RESTORE ebx
-        ret
-        CFI_ENDPROC
-ENDPROC(atomic64_\func\()_return_cx8)
-.endm
-incdec_return inc add adc
-incdec_return dec sub sbb
-ENTRY(atomic64_dec_if_positive_cx8)
-        CFI_STARTPROC
-        SAVE ebx
-        read64 %esi
-1:
-        movl %eax, %ebx
-        movl %edx, %ecx
-        subl $1, %ebx
-        sbb $0, %ecx
-        js 2f
-        LOCK_PREFIX
-        cmpxchg8b (%esi)
-        jne 1b
-2:
-        movl %ebx, %eax
-        movl %ecx, %edx
-        RESTORE ebx
-        ret
-        CFI_ENDPROC
-ENDPROC(atomic64_dec_if_positive_cx8)
-ENTRY(atomic64_add_unless_cx8)
-        CFI_STARTPROC
-        SAVE ebp
-        SAVE ebx
-/* these just push these two parameters on the stack */
-        SAVE edi
-        SAVE esi
-        movl %ecx, %ebp
-        movl %eax, %esi
-        movl %edx, %edi
-        read64 %ebp
-1:
-        cmpl %eax, 0(%esp)
-        je 4f
-2:
-        movl %eax, %ebx
-        movl %edx, %ecx
-        addl %esi, %ebx
-        adcl %edi, %ecx
-        LOCK_PREFIX
-        cmpxchg8b (%ebp)
-        jne 1b
-        movl $1, %eax
-3:
-        addl $8, %esp
-        CFI_ADJUST_CFA_OFFSET -8
-        RESTORE ebx
-        RESTORE ebp
-        ret
-4:
-        cmpl %edx, 4(%esp)
-        jne 2b
-        xorl %eax, %eax
-        jmp 3b
-        CFI_ENDPROC
-ENDPROC(atomic64_add_unless_cx8)
-ENTRY(atomic64_inc_not_zero_cx8)
-        CFI_STARTPROC
-        SAVE ebx
-        read64 %esi
-1:
-        testl %eax, %eax
-        je 4f
-2:
-        movl %eax, %ebx
-        movl %edx, %ecx
-        addl $1, %ebx
-        adcl $0, %ecx
-        LOCK_PREFIX
-        cmpxchg8b (%esi)
-        jne 1b
-        movl $1, %eax
-3:
-        RESTORE ebx
-        ret
-4:
-        testl %edx, %edx
-        jne 2b
-        jmp 3b
-        CFI_ENDPROC
-ENDPROC(atomic64_inc_not_zero_cx8)
diff --git a/arch/um/sys-i386/bug.c b/arch/um/sys-i386/bug.c
deleted file mode 100644
index 8d4f273f1219..000000000000
--- a/arch/um/sys-i386/bug.c
+++ /dev/null
@@ -1,21 +0,0 @@
-/*
- * Copyright (C) 2006 Jeff Dike (jdike@addtoit.com)
- * Licensed under the GPL V2
- */
-#include <linux/uaccess.h>
-#include <asm/errno.h>
-/* Mostly copied from i386/x86_86 - eliminated the eip < PAGE_OFFSET because
- * that's not relevant in skas mode.
- */
-int is_valid_bugaddr(unsigned long eip)
-{
-        unsigned short ud2;
-        if (probe_kernel_address((unsigned short __user *)eip, ud2))
-                return 0;
-        return ud2 == 0x0b0f;
-}
diff --git a/arch/um/sys-i386/bugs.c b/arch/um/sys-i386/bugs.c
deleted file mode 100644
index 2c6d0d731c12..000000000000
--- a/arch/um/sys-i386/bugs.c
+++ /dev/null
@@ -1,76 +0,0 @@
-/*
- * Copyright (C) 2002 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
- * Licensed under the GPL
- */
-#include <signal.h>
-#include "kern_constants.h"
-#include "kern_util.h"
-#include "longjmp.h"
-#include "task.h"
-#include "user.h"
-#include "sysdep/ptrace.h"
-/* Set during early boot */
-static int host_has_cmov = 1;
-static jmp_buf cmov_test_return;
-static void cmov_sigill_test_handler(int sig)
-{
-        host_has_cmov = 0;
-        longjmp(cmov_test_return, 1);
-}
-void arch_check_bugs(void)
-{
-        struct sigaction old, new;
-        printk(UM_KERN_INFO "Checking for host processor cmov support...");
-        new.sa_handler = cmov_sigill_test_handler;
-        /* Make sure that SIGILL is enabled after the handler longjmps back */
-        new.sa_flags = SA_NODEFER;
-        sigemptyset(&new.sa_mask);
-        sigaction(SIGILL, &new, &old);
-        if (setjmp(cmov_test_return) == 0) {
-                unsigned long foo = 0;
-                __asm__ __volatile__("cmovz %0, %1" : "=r" (foo) : "0" (foo));
-                printk(UM_KERN_CONT "Yes\n");
-        } else
-                printk(UM_KERN_CONT "No\n");
-        sigaction(SIGILL, &old, &new);
-}
-void arch_examine_signal(int sig, struct uml_pt_regs *regs)
-{
-        unsigned char tmp[2];
-        /*
-         * This is testing for a cmov (0x0f 0x4x) instruction causing a
-         * SIGILL in init.
-         */
-        if ((sig != SIGILL) || (TASK_PID(get_current()) != 1))
-                return;
-        if (copy_from_user_proc(tmp, (void *) UPT_IP(regs), 2)) {
-                printk(UM_KERN_ERR "SIGILL in init, could not read "
-                       "instructions!\n");
-                return;
-        }
-        if ((tmp[0] != 0x0f) || ((tmp[1] & 0xf0) != 0x40))
-                return;
-        if (host_has_cmov == 0)
-                printk(UM_KERN_ERR "SIGILL caused by cmov, which this "
-                       "processor doesn't implement.  Boot a filesystem "
-                       "compiled for older processors");
-        else if (host_has_cmov == 1)
-                printk(UM_KERN_ERR "SIGILL caused by cmov, which this "
-                       "processor claims to implement");
-        else
-                printk(UM_KERN_ERR "Bad value for host_has_cmov (%d)",
-                        host_has_cmov);
-}
diff --git a/arch/um/sys-i386/checksum.S b/arch/um/sys-i386/checksum.S
deleted file mode 100644
index f058d2f82e18..000000000000
--- a/arch/um/sys-i386/checksum.S
+++ /dev/null
@@ -1,458 +0,0 @@
-/*
- * INET         An implementation of the TCP/IP protocol suite for the LINUX
- *              operating system.  INET is implemented using the  BSD Socket
- *              interface as the means of communication with the user level.
- *
- *              IP/TCP/UDP checksumming routines
- *
- * Authors:     Jorge Cwik, <jorge@laser.satlink.net>
- *              Arnt Gulbrandsen, <agulbra@nvg.unit.no>
- *              Tom May, <ftom@netcom.com>
- *              Pentium Pro/II routines:
- *              Alexander Kjeldaas <astor@guardian.no>
- *              Finn Arne Gangstad <finnag@guardian.no>
- *              Lots of code moved from tcp.c and ip.c; see those files
- *              for more names.
- *
- * Changes:     Ingo Molnar, converted csum_partial_copy() to 2.1 exception
- *                           handling.
- *              Andi Kleen,  add zeroing on error
- *                   converted to pure assembler
- *
- *              This program is free software; you can redistribute it and/or
- *              modify it under the terms of the GNU General Public License
- *              as published by the Free Software Foundation; either version
- *              2 of the License, or (at your option) any later version.
- */
-#include <asm/errno.h>
-                                
-/*
- * computes a partial checksum, e.g. for TCP/UDP fragments
- */
-/*      
-unsigned int csum_partial(const unsigned char * buff, int len, unsigned int sum)
- */
-                
-.text
-.align 4
-.globl csum_partial
-                
-#ifndef CONFIG_X86_USE_PPRO_CHECKSUM
-          /*            
-           * Experiments with Ethernet and SLIP connections show that buff
-           * is aligned on either a 2-byte or 4-byte boundary.  We get at
-           * least a twofold speedup on 486 and Pentium if it is 4-byte aligned.
-           * Fortunately, it is easy to convert 2-byte alignment to 4-byte
-           * alignment for the unrolled loop.
-           */           
-csum_partial:
-        pushl %esi
-        pushl %ebx
-        movl 20(%esp),%eax      # Function arg: unsigned int sum
-        movl 16(%esp),%ecx      # Function arg: int len
-        movl 12(%esp),%esi      # Function arg: unsigned char *buff
-        testl $2, %esi          # Check alignment.
-        jz 2f                   # Jump if alignment is ok.
-        subl $2, %ecx           # Alignment uses up two bytes.
-        jae 1f                  # Jump if we had at least two bytes.
-        addl $2, %ecx           # ecx was < 2.  Deal with it.
-        jmp 4f
-1:      movw (%esi), %bx
-        addl $2, %esi
-        addw %bx, %ax
-        adcl $0, %eax
-2:
-        movl %ecx, %edx
-        shrl $5, %ecx
-        jz 2f
-        testl %esi, %esi
-1:      movl (%esi), %ebx
-        adcl %ebx, %eax
-        movl 4(%esi), %ebx
-        adcl %ebx, %eax
-        movl 8(%esi), %ebx
-        adcl %ebx, %eax
-        movl 12(%esi), %ebx
-        adcl %ebx, %eax
-        movl 16(%esi), %ebx
-        adcl %ebx, %eax
-        movl 20(%esi), %ebx
-        adcl %ebx, %eax
-        movl 24(%esi), %ebx
-        adcl %ebx, %eax
-        movl 28(%esi), %ebx
-        adcl %ebx, %eax
-        lea 32(%esi), %esi
-        dec %ecx
-        jne 1b
-        adcl $0, %eax
-2:      movl %edx, %ecx
-        andl $0x1c, %edx
-        je 4f
-        shrl $2, %edx           # This clears CF
-3:      adcl (%esi), %eax
-        lea 4(%esi), %esi
-        dec %edx
-        jne 3b
-        adcl $0, %eax
-4:      andl $3, %ecx
-        jz 7f
-        cmpl $2, %ecx
-        jb 5f
-        movw (%esi),%cx
-        leal 2(%esi),%esi
-        je 6f
-        shll $16,%ecx
-5:      movb (%esi),%cl
-6:      addl %ecx,%eax
-        adcl $0, %eax 
-7:      
-        popl %ebx
-        popl %esi
-        ret
-#else
-/* Version for PentiumII/PPro */
-csum_partial:
-        pushl %esi
-        pushl %ebx
-        movl 20(%esp),%eax      # Function arg: unsigned int sum
-        movl 16(%esp),%ecx      # Function arg: int len
-        movl 12(%esp),%esi      # Function arg: const unsigned char *buf
-        testl $2, %esi         
-        jnz 30f                 
-10:
-        movl %ecx, %edx
-        movl %ecx, %ebx
-        andl $0x7c, %ebx
-        shrl $7, %ecx
-        addl %ebx,%esi
-        shrl $2, %ebx  
-        negl %ebx
-        lea 45f(%ebx,%ebx,2), %ebx
-        testl %esi, %esi
-        jmp *%ebx
-        # Handle 2-byte-aligned regions
-20:     addw (%esi), %ax
-        lea 2(%esi), %esi
-        adcl $0, %eax
-        jmp 10b
-30:     subl $2, %ecx          
-        ja 20b                 
-        je 32f
-        movzbl (%esi),%ebx      # csumming 1 byte, 2-aligned
-        addl %ebx, %eax
-        adcl $0, %eax
-        jmp 80f
-32:
-        addw (%esi), %ax        # csumming 2 bytes, 2-aligned
-        adcl $0, %eax
-        jmp 80f
-40: 
-        addl -128(%esi), %eax
-        adcl -124(%esi), %eax
-        adcl -120(%esi), %eax
-        adcl -116(%esi), %eax   
-        adcl -112(%esi), %eax   
-        adcl -108(%esi), %eax
-        adcl -104(%esi), %eax
-        adcl -100(%esi), %eax
-        adcl -96(%esi), %eax
-        adcl -92(%esi), %eax
-        adcl -88(%esi), %eax
-        adcl -84(%esi), %eax
-        adcl -80(%esi), %eax
-        adcl -76(%esi), %eax
-        adcl -72(%esi), %eax
-        adcl -68(%esi), %eax
-        adcl -64(%esi), %eax     
-        adcl -60(%esi), %eax     
-        adcl -56(%esi), %eax     
-        adcl -52(%esi), %eax   
-        adcl -48(%esi), %eax   
-        adcl -44(%esi), %eax
-        adcl -40(%esi), %eax
-        adcl -36(%esi), %eax
-        adcl -32(%esi), %eax
-        adcl -28(%esi), %eax
-        adcl -24(%esi), %eax
-        adcl -20(%esi), %eax
-        adcl -16(%esi), %eax
-        adcl -12(%esi), %eax
-        adcl -8(%esi), %eax
-        adcl -4(%esi), %eax
-45:
-        lea 128(%esi), %esi
-        adcl $0, %eax
-        dec %ecx
-        jge 40b
-        movl %edx, %ecx
-50:     andl $3, %ecx
-        jz 80f
-        # Handle the last 1-3 bytes without jumping
-        notl %ecx               # 1->2, 2->1, 3->0, higher bits are masked
-        movl $0xffffff,%ebx     # by the shll and shrl instructions
-        shll $3,%ecx
-        shrl %cl,%ebx
-        andl -128(%esi),%ebx    # esi is 4-aligned so should be ok
-        addl %ebx,%eax
-        adcl $0,%eax
-80: 
-        popl %ebx
-        popl %esi
-        ret
-                                
-#endif
-/*
-unsigned int csum_partial_copy_generic (const char *src, char *dst,
-                                  int len, int sum, int *src_err_ptr, int *dst_err_ptr)
- */ 
-/*
- * Copy from ds while checksumming, otherwise like csum_partial
- *
- * The macros SRC and DST specify the type of access for the instruction.
- * thus we can call a custom exception handler for all access types.
- *
- * FIXME: could someone double-check whether I haven't mixed up some SRC and
- *        DST definitions? It's damn hard to trigger all cases.  I hope I got
- *        them all but there's no guarantee.
- */
-#define SRC(y...)                       \
-        9999: y;                        \
-        .section __ex_table, "a";       \
-        .long 9999b, 6001f      ;       \
-        .previous
-#define DST(y...)                       \
-        9999: y;                        \
-        .section __ex_table, "a";       \
-        .long 9999b, 6002f      ;       \
-        .previous
-.align 4
-#ifndef CONFIG_X86_USE_PPRO_CHECKSUM
-#define ARGBASE 16              
-#define FP              12
-csum_partial_copy_generic_i386:
-        subl  $4,%esp   
-        pushl %edi
-        pushl %esi
-        pushl %ebx
-        movl ARGBASE+16(%esp),%eax      # sum
-        movl ARGBASE+12(%esp),%ecx      # len
-        movl ARGBASE+4(%esp),%esi       # src
-        movl ARGBASE+8(%esp),%edi       # dst
-        testl $2, %edi                  # Check alignment. 
-        jz 2f                           # Jump if alignment is ok.
-        subl $2, %ecx                   # Alignment uses up two bytes.
-        jae 1f                          # Jump if we had at least two bytes.
-        addl $2, %ecx                   # ecx was < 2.  Deal with it.
-        jmp 4f
-SRC(1:  movw (%esi), %bx        )
-        addl $2, %esi
-DST(    movw %bx, (%edi)        )
-        addl $2, %edi
-        addw %bx, %ax   
-        adcl $0, %eax
-2:
-        movl %ecx, FP(%esp)
-        shrl $5, %ecx
-        jz 2f
-        testl %esi, %esi
-SRC(1:  movl (%esi), %ebx       )
-SRC(    movl 4(%esi), %edx      )
-        adcl %ebx, %eax
-DST(    movl %ebx, (%edi)       )
-        adcl %edx, %eax
-DST(    movl %edx, 4(%edi)      )
-SRC(    movl 8(%esi), %ebx      )
-SRC(    movl 12(%esi), %edx     )
-        adcl %ebx, %eax
-DST(    movl %ebx, 8(%edi)      )
-        adcl %edx, %eax
-DST(    movl %edx, 12(%edi)     )
-SRC(    movl 16(%esi), %ebx     )
-SRC(    movl 20(%esi), %edx     )
-        adcl %ebx, %eax
-DST(    movl %ebx, 16(%edi)     )
-        adcl %edx, %eax
-DST(    movl %edx, 20(%edi)     )
-SRC(    movl 24(%esi), %ebx     )
-SRC(    movl 28(%esi), %edx     )
-        adcl %ebx, %eax
-DST(    movl %ebx, 24(%edi)     )
-        adcl %edx, %eax
-DST(    movl %edx, 28(%edi)     )
-        lea 32(%esi), %esi
-        lea 32(%edi), %edi
-        dec %ecx
-        jne 1b
-        adcl $0, %eax
-2:      movl FP(%esp), %edx
-        movl %edx, %ecx
-        andl $0x1c, %edx
-        je 4f
-        shrl $2, %edx                   # This clears CF
-SRC(3:  movl (%esi), %ebx       )
-        adcl %ebx, %eax
-DST(    movl %ebx, (%edi)       )
-        lea 4(%esi), %esi
-        lea 4(%edi), %edi
-        dec %edx
-        jne 3b
-        adcl $0, %eax
-4:      andl $3, %ecx
-        jz 7f
-        cmpl $2, %ecx
-        jb 5f
-SRC(    movw (%esi), %cx        )
-        leal 2(%esi), %esi
-DST(    movw %cx, (%edi)        )
-        leal 2(%edi), %edi
-        je 6f
-        shll $16,%ecx
-SRC(5:  movb (%esi), %cl        )
-DST(    movb %cl, (%edi)        )
-6:      addl %ecx, %eax
-        adcl $0, %eax
-7:
-5000:
-# Exception handler:
-.section .fixup, "ax"                                                   
-6001:
-        movl ARGBASE+20(%esp), %ebx     # src_err_ptr
-        movl $-EFAULT, (%ebx)
-        # zero the complete destination - computing the rest
-        # is too much work 
-        movl ARGBASE+8(%esp), %edi      # dst
-        movl ARGBASE+12(%esp), %ecx     # len
-        xorl %eax,%eax
-        rep ; stosb
-        jmp 5000b
-6002:
-        movl ARGBASE+24(%esp), %ebx     # dst_err_ptr
-        movl $-EFAULT,(%ebx)
-        jmp 5000b
-.previous
-        popl %ebx
-        popl %esi
-        popl %edi
-        popl %ecx                       # equivalent to addl $4,%esp
-        ret     
-#else
-/* Version for PentiumII/PPro */
-#define ROUND1(x) \
-        SRC(movl x(%esi), %ebx  )       ;       \
-        addl %ebx, %eax                 ;       \
-        DST(movl %ebx, x(%edi)  )       ; 
-#define ROUND(x) \
-        SRC(movl x(%esi), %ebx  )       ;       \
-        adcl %ebx, %eax                 ;       \
-        DST(movl %ebx, x(%edi)  )       ;
-#define ARGBASE 12
-                
-csum_partial_copy_generic_i386:
-        pushl %ebx
-        pushl %edi
-        pushl %esi
-        movl ARGBASE+4(%esp),%esi       #src
-        movl ARGBASE+8(%esp),%edi       #dst    
-        movl ARGBASE+12(%esp),%ecx      #len
-        movl ARGBASE+16(%esp),%eax      #sum
-#       movl %ecx, %edx  
-        movl %ecx, %ebx  
-        movl %esi, %edx
-        shrl $6, %ecx     
-        andl $0x3c, %ebx  
-        negl %ebx
-        subl %ebx, %esi  
-        subl %ebx, %edi  
-        lea  -1(%esi),%edx
-        andl $-32,%edx
-        lea 3f(%ebx,%ebx), %ebx
-        testl %esi, %esi 
-        jmp *%ebx
-1:      addl $64,%esi
-        addl $64,%edi 
-        SRC(movb -32(%edx),%bl) ; SRC(movb (%edx),%bl)
-        ROUND1(-64) ROUND(-60) ROUND(-56) ROUND(-52)    
-        ROUND (-48) ROUND(-44) ROUND(-40) ROUND(-36)    
-        ROUND (-32) ROUND(-28) ROUND(-24) ROUND(-20)    
-        ROUND (-16) ROUND(-12) ROUND(-8)  ROUND(-4)     
-3:      adcl $0,%eax
-        addl $64, %edx
-        dec %ecx
-        jge 1b
-4:      movl ARGBASE+12(%esp),%edx      #len
-        andl $3, %edx
-        jz 7f
-        cmpl $2, %edx
-        jb 5f
-SRC(    movw (%esi), %dx         )
-        leal 2(%esi), %esi
-DST(    movw %dx, (%edi)         )
-        leal 2(%edi), %edi
-        je 6f
-        shll $16,%edx
-5:
-SRC(    movb (%esi), %dl         )
-DST(    movb %dl, (%edi)         )
-6:      addl %edx, %eax
-        adcl $0, %eax
-7:
-.section .fixup, "ax"
-6001:   movl    ARGBASE+20(%esp), %ebx  # src_err_ptr   
-        movl $-EFAULT, (%ebx)
-        # zero the complete destination (computing the rest is too much work)
-        movl ARGBASE+8(%esp),%edi       # dst
-        movl ARGBASE+12(%esp),%ecx      # len
-        xorl %eax,%eax
-        rep; stosb
-        jmp 7b
-6002:   movl ARGBASE+24(%esp), %ebx     # dst_err_ptr
-        movl $-EFAULT, (%ebx)
-        jmp  7b                 
-.previous                               
-        popl %esi
-        popl %edi
-        popl %ebx
-        ret
-                                
-#undef ROUND
-#undef ROUND1           
-                
-#endif
diff --git a/arch/um/sys-i386/delay.c b/arch/um/sys-i386/delay.c
deleted file mode 100644
index f3fe1a688f7e..000000000000
--- a/arch/um/sys-i386/delay.c
+++ /dev/null
@@ -1,60 +0,0 @@
-/*
- * Copyright (C) 2011 Richard Weinberger <richrd@nod.at>
- * Mostly copied from arch/x86/lib/delay.c
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/delay.h>
-#include <asm/param.h>
-void __delay(unsigned long loops)
-{
-        asm volatile(
-                "test %0,%0\n"
-                "jz 3f\n"
-                "jmp 1f\n"
-                ".align 16\n"
-                "1: jmp 2f\n"
-                ".align 16\n"
-                "2: dec %0\n"
-                " jnz 2b\n"
-                "3: dec %0\n"
-                : /* we don't need output */
-                : "a" (loops)
-        );
-}
-EXPORT_SYMBOL(__delay);
-inline void __const_udelay(unsigned long xloops)
-{
-        int d0;
-        xloops *= 4;
-        asm("mull %%edx"
-                : "=d" (xloops), "=&a" (d0)
-                : "1" (xloops), "0"
-                (loops_per_jiffy * (HZ/4)));
-        __delay(++xloops);
-}
-EXPORT_SYMBOL(__const_udelay);
-void __udelay(unsigned long usecs)
-{
-        __const_udelay(usecs * 0x000010c7); /* 2**32 / 1000000 (rounded up) */
-}
-EXPORT_SYMBOL(__udelay);
-void __ndelay(unsigned long nsecs)
-{
-        __const_udelay(nsecs * 0x00005); /* 2**32 / 1000000000 (rounded up) */
-}
-EXPORT_SYMBOL(__ndelay);
diff --git a/arch/um/sys-i386/elfcore.c b/arch/um/sys-i386/elfcore.c
deleted file mode 100644
index 6bb49b687c97..000000000000
--- a/arch/um/sys-i386/elfcore.c
+++ /dev/null
@@ -1,83 +0,0 @@
-#include <linux/elf.h>
-#include <linux/coredump.h>
-#include <linux/fs.h>
-#include <linux/mm.h>
-#include <asm/elf.h>
-Elf32_Half elf_core_extra_phdrs(void)
-{
-        return vsyscall_ehdr ? (((struct elfhdr *)vsyscall_ehdr)->e_phnum) : 0;
-}
-int elf_core_write_extra_phdrs(struct file *file, loff_t offset, size_t *size,
-                               unsigned long limit)
-{
-        if ( vsyscall_ehdr ) {
-                const struct elfhdr *const ehdrp =
-                        (struct elfhdr *) vsyscall_ehdr;
-                const struct elf_phdr *const phdrp =
-                        (const struct elf_phdr *) (vsyscall_ehdr + ehdrp->e_phoff);
-                int i;
-                Elf32_Off ofs = 0;
-                for (i = 0; i < ehdrp->e_phnum; ++i) {
-                        struct elf_phdr phdr = phdrp[i];
-                        if (phdr.p_type == PT_LOAD) {
-                                ofs = phdr.p_offset = offset;
-                                offset += phdr.p_filesz;
-                        } else {
-                                phdr.p_offset += ofs;
-                        }
-                        phdr.p_paddr = 0; /* match other core phdrs */
-                        *size += sizeof(phdr);
-                        if (*size > limit
-                            || !dump_write(file, &phdr, sizeof(phdr)))
-                                return 0;
-                }
-        }
-        return 1;
-}
-int elf_core_write_extra_data(struct file *file, size_t *size,
-                              unsigned long limit)
-{
-        if ( vsyscall_ehdr ) {
-                const struct elfhdr *const ehdrp =
-                        (struct elfhdr *) vsyscall_ehdr;
-                const struct elf_phdr *const phdrp =
-                        (const struct elf_phdr *) (vsyscall_ehdr + ehdrp->e_phoff);
-                int i;
-                for (i = 0; i < ehdrp->e_phnum; ++i) {
-                        if (phdrp[i].p_type == PT_LOAD) {
-                                void *addr = (void *) phdrp[i].p_vaddr;
-                                size_t filesz = phdrp[i].p_filesz;
-                                *size += filesz;
-                                if (*size > limit
-                                    || !dump_write(file, addr, filesz))
-                                        return 0;
-                        }
-                }
-        }
-        return 1;
-}
-size_t elf_core_extra_data_size(void)
-{
-        if ( vsyscall_ehdr ) {
-                const struct elfhdr *const ehdrp =
-                        (struct elfhdr *)vsyscall_ehdr;
-                const struct elf_phdr *const phdrp =
-                        (const struct elf_phdr *) (vsyscall_ehdr + ehdrp->e_phoff);
-                int i;
-                for (i = 0; i < ehdrp->e_phnum; ++i)
-                        if (phdrp[i].p_type == PT_LOAD)
-                                return (size_t) phdrp[i].p_filesz;
-        }
-        return 0;
-}
diff --git a/arch/um/sys-i386/fault.c b/arch/um/sys-i386/fault.c
deleted file mode 100644
index d670f68532f4..000000000000
--- a/arch/um/sys-i386/fault.c
+++ /dev/null
@@ -1,28 +0,0 @@
-/* 
- * Copyright (C) 2002 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
- * Licensed under the GPL
- */
-#include "sysdep/ptrace.h"
-/* These two are from asm-um/uaccess.h and linux/module.h, check them. */
-struct exception_table_entry
-{
-        unsigned long insn;
-        unsigned long fixup;
-};
-const struct exception_table_entry *search_exception_tables(unsigned long add);
-/* Compare this to arch/i386/mm/extable.c:fixup_exception() */
-int arch_fixup(unsigned long address, struct uml_pt_regs *regs)
-{
-        const struct exception_table_entry *fixup;
-        fixup = search_exception_tables(address);
-        if (fixup != 0) {
-                UPT_IP(regs) = fixup->fixup;
-                return 1;
-        }
-        return 0;
-}
diff --git a/arch/um/sys-i386/ksyms.c b/arch/um/sys-i386/ksyms.c
deleted file mode 100644
index bfbefd30db8f..000000000000
--- a/arch/um/sys-i386/ksyms.c
+++ /dev/null
@@ -1,5 +0,0 @@
-#include "linux/module.h"
-#include "asm/checksum.h"
-/* Networking helper routines. */
-EXPORT_SYMBOL(csum_partial);
diff --git a/arch/um/sys-i386/ldt.c b/arch/um/sys-i386/ldt.c
deleted file mode 100644
index 3f2bf208d884..000000000000
--- a/arch/um/sys-i386/ldt.c
+++ /dev/null
@@ -1,502 +0,0 @@
-/*
- * Copyright (C) 2001 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
- * Licensed under the GPL
- */
-#include <linux/mm.h>
-#include <linux/sched.h>
-#include <linux/slab.h>
-#include <asm/unistd.h>
-#include "os.h"
-#include "proc_mm.h"
-#include "skas.h"
-#include "skas_ptrace.h"
-#include "sysdep/tls.h"
-extern int modify_ldt(int func, void *ptr, unsigned long bytecount);
-static long write_ldt_entry(struct mm_id *mm_idp, int func,
-                     struct user_desc *desc, void **addr, int done)
-{
-        long res;
-        if (proc_mm) {
-                /*
-                 * This is a special handling for the case, that the mm to
-                 * modify isn't current->active_mm.
-                 * If this is called directly by modify_ldt,
-                 *     (current->active_mm->context.skas.u == mm_idp)
-                 * will be true. So no call to __switch_mm(mm_idp) is done.
-                 * If this is called in case of init_new_ldt or PTRACE_LDT,
-                 * mm_idp won't belong to current->active_mm, but child->mm.
-                 * So we need to switch child's mm into our userspace, then
-                 * later switch back.
-                 *
-                 * Note: I'm unsure: should interrupts be disabled here?
-                 */
-                if (!current->active_mm || current->active_mm == &init_mm ||
-                    mm_idp != &current->active_mm->context.id)
-                        __switch_mm(mm_idp);
-        }
-        if (ptrace_ldt) {
-                struct ptrace_ldt ldt_op = (struct ptrace_ldt) {
-                        .func = func,
-                        .ptr = desc,
-                        .bytecount = sizeof(*desc)};
-                u32 cpu;
-                int pid;
-                if (!proc_mm)
-                        pid = mm_idp->u.pid;
-                else {
-                        cpu = get_cpu();
-                        pid = userspace_pid[cpu];
-                }
-                res = os_ptrace_ldt(pid, 0, (unsigned long) &ldt_op);
-                if (proc_mm)
-                        put_cpu();
-        }
-        else {
-                void *stub_addr;
-                res = syscall_stub_data(mm_idp, (unsigned long *)desc,
-                                        (sizeof(*desc) + sizeof(long) - 1) &
-                                            ~(sizeof(long) - 1),
-                                        addr, &stub_addr);
-                if (!res) {
-                        unsigned long args[] = { func,
-                                                 (unsigned long)stub_addr,
-                                                 sizeof(*desc),
-                                                 0, 0, 0 };
-                        res = run_syscall_stub(mm_idp, __NR_modify_ldt, args,
-                                               0, addr, done);
-                }
-        }
-        if (proc_mm) {
-                /*
-                 * This is the second part of special handling, that makes
-                 * PTRACE_LDT possible to implement.
-                 */
-                if (current->active_mm && current->active_mm != &init_mm &&
-                    mm_idp != &current->active_mm->context.id)
-                        __switch_mm(&current->active_mm->context.id);
-        }
-        return res;
-}
-static long read_ldt_from_host(void __user * ptr, unsigned long bytecount)
-{
-        int res, n;
-        struct ptrace_ldt ptrace_ldt = (struct ptrace_ldt) {
-                        .func = 0,
-                        .bytecount = bytecount,
-                        .ptr = kmalloc(bytecount, GFP_KERNEL)};
-        u32 cpu;
-        if (ptrace_ldt.ptr == NULL)
-                return -ENOMEM;
-        /*
-         * This is called from sys_modify_ldt only, so userspace_pid gives
-         * us the right number
-         */
-        cpu = get_cpu();
-        res = os_ptrace_ldt(userspace_pid[cpu], 0, (unsigned long) &ptrace_ldt);
-        put_cpu();
-        if (res < 0)
-                goto out;
-        n = copy_to_user(ptr, ptrace_ldt.ptr, res);
-        if (n != 0)
-                res = -EFAULT;
-  out:
-        kfree(ptrace_ldt.ptr);
-        return res;
-}
-/*
- * In skas mode, we hold our own ldt data in UML.
- * Thus, the code implementing sys_modify_ldt_skas
- * is very similar to (and mostly stolen from) sys_modify_ldt
- * for arch/i386/kernel/ldt.c
- * The routines copied and modified in part are:
- * - read_ldt
- * - read_default_ldt
- * - write_ldt
- * - sys_modify_ldt_skas
- */
-static int read_ldt(void __user * ptr, unsigned long bytecount)
-{
-        int i, err = 0;
-        unsigned long size;
-        uml_ldt_t * ldt = &current->mm->context.ldt;
-        if (!ldt->entry_count)
-                goto out;
-        if (bytecount > LDT_ENTRY_SIZE*LDT_ENTRIES)
-                bytecount = LDT_ENTRY_SIZE*LDT_ENTRIES;
-        err = bytecount;
-        if (ptrace_ldt)
-                return read_ldt_from_host(ptr, bytecount);
-        mutex_lock(&ldt->lock);
-        if (ldt->entry_count <= LDT_DIRECT_ENTRIES) {
-                size = LDT_ENTRY_SIZE*LDT_DIRECT_ENTRIES;
-                if (size > bytecount)
-                        size = bytecount;
-                if (copy_to_user(ptr, ldt->u.entries, size))
-                        err = -EFAULT;
-                bytecount -= size;
-                ptr += size;
-        }
-        else {
-                for (i=0; i<ldt->entry_count/LDT_ENTRIES_PER_PAGE && bytecount;
-                     i++) {
-                        size = PAGE_SIZE;
-                        if (size > bytecount)
-                                size = bytecount;
-                        if (copy_to_user(ptr, ldt->u.pages[i], size)) {
-                                err = -EFAULT;
-                                break;
-                        }
-                        bytecount -= size;
-                        ptr += size;
-                }
-        }
-        mutex_unlock(&ldt->lock);
-        if (bytecount == 0 || err == -EFAULT)
-                goto out;
-        if (clear_user(ptr, bytecount))
-                err = -EFAULT;
-out:
-        return err;
-}
-static int read_default_ldt(void __user * ptr, unsigned long bytecount)
-{
-        int err;
-        if (bytecount > 5*LDT_ENTRY_SIZE)
-                bytecount = 5*LDT_ENTRY_SIZE;
-        err = bytecount;
-        /*
-         * UML doesn't support lcall7 and lcall27.
-         * So, we don't really have a default ldt, but emulate
-         * an empty ldt of common host default ldt size.
-         */
-        if (clear_user(ptr, bytecount))
-                err = -EFAULT;
-        return err;
-}
-static int write_ldt(void __user * ptr, unsigned long bytecount, int func)
-{
-        uml_ldt_t * ldt = &current->mm->context.ldt;
-        struct mm_id * mm_idp = &current->mm->context.id;
-        int i, err;
-        struct user_desc ldt_info;
-        struct ldt_entry entry0, *ldt_p;
-        void *addr = NULL;
-        err = -EINVAL;
-        if (bytecount != sizeof(ldt_info))
-                goto out;
-        err = -EFAULT;
-        if (copy_from_user(&ldt_info, ptr, sizeof(ldt_info)))
-                goto out;
-        err = -EINVAL;
-        if (ldt_info.entry_number >= LDT_ENTRIES)
-                goto out;
-        if (ldt_info.contents == 3) {
-                if (func == 1)
-                        goto out;
-                if (ldt_info.seg_not_present == 0)
-                        goto out;
-        }
-        if (!ptrace_ldt)
-                mutex_lock(&ldt->lock);
-        err = write_ldt_entry(mm_idp, func, &ldt_info, &addr, 1);
-        if (err)
-                goto out_unlock;
-        else if (ptrace_ldt) {
-                /* With PTRACE_LDT available, this is used as a flag only */
-                ldt->entry_count = 1;
-                goto out;
-        }
-        if (ldt_info.entry_number >= ldt->entry_count &&
-            ldt_info.entry_number >= LDT_DIRECT_ENTRIES) {
-                for (i=ldt->entry_count/LDT_ENTRIES_PER_PAGE;
-                     i*LDT_ENTRIES_PER_PAGE <= ldt_info.entry_number;
-                     i++) {
-                        if (i == 0)
-                                memcpy(&entry0, ldt->u.entries,
-                                       sizeof(entry0));
-                        ldt->u.pages[i] = (struct ldt_entry *)
-                                __get_free_page(GFP_KERNEL|__GFP_ZERO);
-                        if (!ldt->u.pages[i]) {
-                                err = -ENOMEM;
-                                /* Undo the change in host */
-                                memset(&ldt_info, 0, sizeof(ldt_info));
-                                write_ldt_entry(mm_idp, 1, &ldt_info, &addr, 1);
-                                goto out_unlock;
-                        }
-                        if (i == 0) {
-                                memcpy(ldt->u.pages[0], &entry0,
-                                       sizeof(entry0));
-                                memcpy(ldt->u.pages[0]+1, ldt->u.entries+1,
-                                       sizeof(entry0)*(LDT_DIRECT_ENTRIES-1));
-                        }
-                        ldt->entry_count = (i + 1) * LDT_ENTRIES_PER_PAGE;
-                }
-        }
-        if (ldt->entry_count <= ldt_info.entry_number)
-                ldt->entry_count = ldt_info.entry_number + 1;
-        if (ldt->entry_count <= LDT_DIRECT_ENTRIES)
-                ldt_p = ldt->u.entries + ldt_info.entry_number;
-        else
-                ldt_p = ldt->u.pages[ldt_info.entry_number/LDT_ENTRIES_PER_PAGE] +
-                        ldt_info.entry_number%LDT_ENTRIES_PER_PAGE;
-        if (ldt_info.base_addr == 0 && ldt_info.limit == 0 &&
-           (func == 1 || LDT_empty(&ldt_info))) {
-                ldt_p->a = 0;
-                ldt_p->b = 0;
-        }
-        else{
-                if (func == 1)
-                        ldt_info.useable = 0;
-                ldt_p->a = LDT_entry_a(&ldt_info);
-                ldt_p->b = LDT_entry_b(&ldt_info);
-        }
-        err = 0;
-out_unlock:
-        mutex_unlock(&ldt->lock);
-out:
-        return err;
-}
-static long do_modify_ldt_skas(int func, void __user *ptr,
-                               unsigned long bytecount)
-{
-        int ret = -ENOSYS;
-        switch (func) {
-                case 0:
-                        ret = read_ldt(ptr, bytecount);
-                        break;
-                case 1:
-                case 0x11:
-                        ret = write_ldt(ptr, bytecount, func);
-                        break;
-                case 2:
-                        ret = read_default_ldt(ptr, bytecount);
-                        break;
-        }
-        return ret;
-}
-static DEFINE_SPINLOCK(host_ldt_lock);
-static short dummy_list[9] = {0, -1};
-static short * host_ldt_entries = NULL;
-static void ldt_get_host_info(void)
-{
-        long ret;
-        struct ldt_entry * ldt;
-        short *tmp;
-        int i, size, k, order;
-        spin_lock(&host_ldt_lock);
-        if (host_ldt_entries != NULL) {
-                spin_unlock(&host_ldt_lock);
-                return;
-        }
-        host_ldt_entries = dummy_list+1;
-        spin_unlock(&host_ldt_lock);
-        for (i = LDT_PAGES_MAX-1, order=0; i; i>>=1, order++)
-                ;
-        ldt = (struct ldt_entry *)
-              __get_free_pages(GFP_KERNEL|__GFP_ZERO, order);
-        if (ldt == NULL) {
-                printk(KERN_ERR "ldt_get_host_info: couldn't allocate buffer "
-                       "for host ldt\n");
-                return;
-        }
-        ret = modify_ldt(0, ldt, (1<<order)*PAGE_SIZE);
-        if (ret < 0) {
-                printk(KERN_ERR "ldt_get_host_info: couldn't read host ldt\n");
-                goto out_free;
-        }
-        if (ret == 0) {
-                /* default_ldt is active, simply write an empty entry 0 */
-                host_ldt_entries = dummy_list;
-                goto out_free;
-        }
-        for (i=0, size=0; i<ret/LDT_ENTRY_SIZE; i++) {
-                if (ldt[i].a != 0 || ldt[i].b != 0)
-                        size++;
-        }
-        if (size < ARRAY_SIZE(dummy_list))
-                host_ldt_entries = dummy_list;
-        else {
-                size = (size + 1) * sizeof(dummy_list[0]);
-                tmp = kmalloc(size, GFP_KERNEL);
-                if (tmp == NULL) {
-                        printk(KERN_ERR "ldt_get_host_info: couldn't allocate "
-                               "host ldt list\n");
-                        goto out_free;
-                }
-                host_ldt_entries = tmp;
-        }
-        for (i=0, k=0; i<ret/LDT_ENTRY_SIZE; i++) {
-                if (ldt[i].a != 0 || ldt[i].b != 0)
-                        host_ldt_entries[k++] = i;
-        }
-        host_ldt_entries[k] = -1;
-out_free:
-        free_pages((unsigned long)ldt, order);
-}
-long init_new_ldt(struct mm_context *new_mm, struct mm_context *from_mm)
-{
-        struct user_desc desc;
-        short * num_p;
-        int i;
-        long page, err=0;
-        void *addr = NULL;
-        struct proc_mm_op copy;
-        if (!ptrace_ldt)
-                mutex_init(&new_mm->ldt.lock);
-        if (!from_mm) {
-                memset(&desc, 0, sizeof(desc));
-                /*
-                 * We have to initialize a clean ldt.
-                 */
-                if (proc_mm) {
-                        /*
-                         * If the new mm was created using proc_mm, host's
-                         * default-ldt currently is assigned, which normally
-                         * contains the call-gates for lcall7 and lcall27.
-                         * To remove these gates, we simply write an empty
-                         * entry as number 0 to the host.
-                         */
-                        err = write_ldt_entry(&new_mm->id, 1, &desc, &addr, 1);
-                }
-                else{
-                        /*
-                         * Now we try to retrieve info about the ldt, we
-                         * inherited from the host. All ldt-entries found
-                         * will be reset in the following loop
-                         */
-                        ldt_get_host_info();
-                        for (num_p=host_ldt_entries; *num_p != -1; num_p++) {
-                                desc.entry_number = *num_p;
-                                err = write_ldt_entry(&new_mm->id, 1, &desc,
-                                                      &addr, *(num_p + 1) == -1);
-                                if (err)
-                                        break;
-                        }
-                }
-                new_mm->ldt.entry_count = 0;
-                goto out;
-        }
-        if (proc_mm) {
-                /*
-                 * We have a valid from_mm, so we now have to copy the LDT of
-                 * from_mm to new_mm, because using proc_mm an new mm with
-                 * an empty/default LDT was created in new_mm()
-                 */
-                copy = ((struct proc_mm_op) { .op       = MM_COPY_SEGMENTS,
-                                              .u        =
-                                              { .copy_segments =
-                                                        from_mm->id.u.mm_fd } } );
-                i = os_write_file(new_mm->id.u.mm_fd, &copy, sizeof(copy));
-                if (i != sizeof(copy))
-                        printk(KERN_ERR "new_mm : /proc/mm copy_segments "
-                               "failed, err = %d\n", -i);
-        }
-        if (!ptrace_ldt) {
-                /*
-                 * Our local LDT is used to supply the data for
-                 * modify_ldt(READLDT), if PTRACE_LDT isn't available,
-                 * i.e., we have to use the stub for modify_ldt, which
-                 * can't handle the big read buffer of up to 64kB.
-                 */
-                mutex_lock(&from_mm->ldt.lock);
-                if (from_mm->ldt.entry_count <= LDT_DIRECT_ENTRIES)
-                        memcpy(new_mm->ldt.u.entries, from_mm->ldt.u.entries,
-                               sizeof(new_mm->ldt.u.entries));
-                else {
-                        i = from_mm->ldt.entry_count / LDT_ENTRIES_PER_PAGE;
-                        while (i-->0) {
-                                page = __get_free_page(GFP_KERNEL|__GFP_ZERO);
-                                if (!page) {
-                                        err = -ENOMEM;
-                                        break;
-                                }
-                                new_mm->ldt.u.pages[i] =
-                                        (struct ldt_entry *) page;
-                                memcpy(new_mm->ldt.u.pages[i],
-                                       from_mm->ldt.u.pages[i], PAGE_SIZE);
-                        }
-                }
-                new_mm->ldt.entry_count = from_mm->ldt.entry_count;
-                mutex_unlock(&from_mm->ldt.lock);
-        }
-    out:
-        return err;
-}
-void free_ldt(struct mm_context *mm)
-{
-        int i;
-        if (!ptrace_ldt && mm->ldt.entry_count > LDT_DIRECT_ENTRIES) {
-                i = mm->ldt.entry_count / LDT_ENTRIES_PER_PAGE;
-                while (i-- > 0)
-                        free_page((long) mm->ldt.u.pages[i]);
-        }
-        mm->ldt.entry_count = 0;
-}
-int sys_modify_ldt(int func, void __user *ptr, unsigned long bytecount)
-{
-        return do_modify_ldt_skas(func, ptr, bytecount);
-}
diff --git a/arch/um/sys-i386/mem.c b/arch/um/sys-i386/mem.c
deleted file mode 100644
index 639900a6fde9..000000000000
--- a/arch/um/sys-i386/mem.c
+++ /dev/null
@@ -1,62 +0,0 @@
-/*
- * Copyright (C) 2011 Richard Weinberger <richrd@nod.at>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-#include <linux/mm.h>
-#include <asm/page.h>
-#include <asm/mman.h>
-static struct vm_area_struct gate_vma;
-static int __init gate_vma_init(void)
-{
-        if (!FIXADDR_USER_START)
-                return 0;
-        gate_vma.vm_mm = NULL;
-        gate_vma.vm_start = FIXADDR_USER_START;
-        gate_vma.vm_end = FIXADDR_USER_END;
-        gate_vma.vm_flags = VM_READ | VM_MAYREAD | VM_EXEC | VM_MAYEXEC;
-        gate_vma.vm_page_prot = __P101;
-        /*
-         * Make sure the vDSO gets into every core dump.
-         * Dumping its contents makes post-mortem fully interpretable later
-         * without matching up the same kernel and hardware config to see
-         * what PC values meant.
-         */
-        gate_vma.vm_flags |= VM_ALWAYSDUMP;
-        return 0;
-}
-__initcall(gate_vma_init);
-struct vm_area_struct *get_gate_vma(struct mm_struct *mm)
-{
-        return FIXADDR_USER_START ? &gate_vma : NULL;
-}
-int in_gate_area_no_mm(unsigned long addr)
-{
-        if (!FIXADDR_USER_START)
-                return 0;
-        if ((addr >= FIXADDR_USER_START) && (addr < FIXADDR_USER_END))
-                return 1;
-        return 0;
-}
-int in_gate_area(struct mm_struct *mm, unsigned long addr)
-{
-        struct vm_area_struct *vma = get_gate_vma(mm);
-        if (!vma)
-                return 0;
-        return (addr >= vma->vm_start) && (addr < vma->vm_end);
-}
diff --git a/arch/um/sys-i386/ptrace.c b/arch/um/sys-i386/ptrace.c
deleted file mode 100644
index 3375c2717851..000000000000
--- a/arch/um/sys-i386/ptrace.c
+++ /dev/null
@@ -1,228 +0,0 @@
-/*
- * Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
- * Licensed under the GPL
- */
-#include "linux/mm.h"
-#include "linux/sched.h"
-#include "asm/uaccess.h"
-#include "skas.h"
-extern int arch_switch_tls(struct task_struct *to);
-void arch_switch_to(struct task_struct *to)
-{
-        int err = arch_switch_tls(to);
-        if (!err)
-                return;
-        if (err != -EINVAL)
-                printk(KERN_WARNING "arch_switch_tls failed, errno %d, "
-                       "not EINVAL\n", -err);
-        else
-                printk(KERN_WARNING "arch_switch_tls failed, errno = EINVAL\n");
-}
-int is_syscall(unsigned long addr)
-{
-        unsigned short instr;
-        int n;
-        n = copy_from_user(&instr, (void __user *) addr, sizeof(instr));
-        if (n) {
-                /* access_process_vm() grants access to vsyscall and stub,
-                 * while copy_from_user doesn't. Maybe access_process_vm is
-                 * slow, but that doesn't matter, since it will be called only
-                 * in case of singlestepping, if copy_from_user failed.
-                 */
-                n = access_process_vm(current, addr, &instr, sizeof(instr), 0);
-                if (n != sizeof(instr)) {
-                        printk(KERN_ERR "is_syscall : failed to read "
-                               "instruction from 0x%lx\n", addr);
-                        return 1;
-                }
-        }
-        /* int 0x80 or sysenter */
-        return (instr == 0x80cd) || (instr == 0x340f);
-}
-/* determines which flags the user has access to. */
-/* 1 = access 0 = no access */
-#define FLAG_MASK 0x00044dd5
-int putreg(struct task_struct *child, int regno, unsigned long value)
-{
-        regno >>= 2;
-        switch (regno) {
-        case FS:
-                if (value && (value & 3) != 3)
-                        return -EIO;
-                PT_REGS_FS(&child->thread.regs) = value;
-                return 0;
-        case GS:
-                if (value && (value & 3) != 3)
-                        return -EIO;
-                PT_REGS_GS(&child->thread.regs) = value;
-                return 0;
-        case DS:
-        case ES:
-                if (value && (value & 3) != 3)
-                        return -EIO;
-                value &= 0xffff;
-                break;
-        case SS:
-        case CS:
-                if ((value & 3) != 3)
-                        return -EIO;
-                value &= 0xffff;
-                break;
-        case EFL:
-                value &= FLAG_MASK;
-                value |= PT_REGS_EFLAGS(&child->thread.regs);
-                break;
-        }
-        PT_REGS_SET(&child->thread.regs, regno, value);
-        return 0;
-}
-int poke_user(struct task_struct *child, long addr, long data)
-{
-        if ((addr & 3) || addr < 0)
-                return -EIO;
-        if (addr < MAX_REG_OFFSET)
-                return putreg(child, addr, data);
-        else if ((addr >= offsetof(struct user, u_debugreg[0])) &&
-                 (addr <= offsetof(struct user, u_debugreg[7]))) {
-                addr -= offsetof(struct user, u_debugreg[0]);
-                addr = addr >> 2;
-                if ((addr == 4) || (addr == 5))
-                        return -EIO;
-                child->thread.arch.debugregs[addr] = data;
-                return 0;
-        }
-        return -EIO;
-}
-unsigned long getreg(struct task_struct *child, int regno)
-{
-        unsigned long retval = ~0UL;
-        regno >>= 2;
-        switch (regno) {
-        case FS:
-        case GS:
-        case DS:
-        case ES:
-        case SS:
-        case CS:
-                retval = 0xffff;
-                /* fall through */
-        default:
-                retval &= PT_REG(&child->thread.regs, regno);
-        }
-        return retval;
-}
-/* read the word at location addr in the USER area. */
-int peek_user(struct task_struct *child, long addr, long data)
-{
-        unsigned long tmp;
-        if ((addr & 3) || addr < 0)
-                return -EIO;
-        tmp = 0;  /* Default return condition */
-        if (addr < MAX_REG_OFFSET) {
-                tmp = getreg(child, addr);
-        }
-        else if ((addr >= offsetof(struct user, u_debugreg[0])) &&
-                 (addr <= offsetof(struct user, u_debugreg[7]))) {
-                addr -= offsetof(struct user, u_debugreg[0]);
-                addr = addr >> 2;
-                tmp = child->thread.arch.debugregs[addr];
-        }
-        return put_user(tmp, (unsigned long __user *) data);
-}
-static int get_fpregs(struct user_i387_struct __user *buf, struct task_struct *child)
-{
-        int err, n, cpu = ((struct thread_info *) child->stack)->cpu;
-        struct user_i387_struct fpregs;
-        err = save_fp_registers(userspace_pid[cpu], (unsigned long *) &fpregs);
-        if (err)
-                return err;
-        n = copy_to_user(buf, &fpregs, sizeof(fpregs));
-        if(n > 0)
-                return -EFAULT;
-        return n;
-}
-static int set_fpregs(struct user_i387_struct __user *buf, struct task_struct *child)
-{
-        int n, cpu = ((struct thread_info *) child->stack)->cpu;
-        struct user_i387_struct fpregs;
-        n = copy_from_user(&fpregs, buf, sizeof(fpregs));
-        if (n > 0)
-                return -EFAULT;
-        return restore_fp_registers(userspace_pid[cpu],
-                                    (unsigned long *) &fpregs);
-}
-static int get_fpxregs(struct user_fxsr_struct __user *buf, struct task_struct *child)
-{
-        int err, n, cpu = ((struct thread_info *) child->stack)->cpu;
-        struct user_fxsr_struct fpregs;
-        err = save_fpx_registers(userspace_pid[cpu], (unsigned long *) &fpregs);
-        if (err)
-                return err;
-        n = copy_to_user(buf, &fpregs, sizeof(fpregs));
-        if(n > 0)
-                return -EFAULT;
-        return n;
-}
-static int set_fpxregs(struct user_fxsr_struct __user *buf, struct task_struct *child)
-{
-        int n, cpu = ((struct thread_info *) child->stack)->cpu;
-        struct user_fxsr_struct fpregs;
-        n = copy_from_user(&fpregs, buf, sizeof(fpregs));
-        if (n > 0)
-                return -EFAULT;
-        return restore_fpx_registers(userspace_pid[cpu],
-                                     (unsigned long *) &fpregs);
-}
-long subarch_ptrace(struct task_struct *child, long request,
-                    unsigned long addr, unsigned long data)
-{
-        int ret = -EIO;
-        void __user *datap = (void __user *) data;
-        switch (request) {
-        case PTRACE_GETFPREGS: /* Get the child FPU state. */
-                ret = get_fpregs(datap, child);
-                break;
-        case PTRACE_SETFPREGS: /* Set the child FPU state. */
-                ret = set_fpregs(datap, child);
-                break;
-        case PTRACE_GETFPXREGS: /* Get the child FPU state. */
-                ret = get_fpxregs(datap, child);
-                break;
-        case PTRACE_SETFPXREGS: /* Set the child FPU state. */
-                ret = set_fpxregs(datap, child);
-                break;
-        default:
-                ret = -EIO;
-        }
-        return ret;
-}
diff --git a/arch/um/sys-i386/ptrace_user.c b/arch/um/sys-i386/ptrace_user.c
deleted file mode 100644
index 0b10c3e74028..000000000000
--- a/arch/um/sys-i386/ptrace_user.c
+++ /dev/null
@@ -1,21 +0,0 @@
-/*
- * Copyright (C) 2002 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
- * Licensed under the GPL
- */
-#include <errno.h>
-#include <sys/ptrace.h>
-int ptrace_getregs(long pid, unsigned long *regs_out)
-{
-        if (ptrace(PTRACE_GETREGS, pid, 0, regs_out) < 0)
-                return -errno;
-        return 0;
-}
-int ptrace_setregs(long pid, unsigned long *regs)
-{
-        if (ptrace(PTRACE_SETREGS, pid, 0, regs) < 0)
-                return -errno;
-        return 0;
-}
diff --git a/arch/um/sys-i386/setjmp.S b/arch/um/sys-i386/setjmp.S
deleted file mode 100644
index b766792c9933..000000000000
--- a/arch/um/sys-i386/setjmp.S
+++ /dev/null
@@ -1,58 +0,0 @@
-#
-# arch/i386/setjmp.S
-#
-# setjmp/longjmp for the i386 architecture
-#
-#
-# The jmp_buf is assumed to contain the following, in order:
-#       %ebx
-#       %esp
-#       %ebp
-#       %esi
-#       %edi
-#       <return address>
-#
-        .text
-        .align 4
-        .globl setjmp
-        .type setjmp, @function
-setjmp:
-#ifdef _REGPARM
-        movl %eax,%edx
-#else
-        movl 4(%esp),%edx
-#endif
-        popl %ecx                       # Return address, and adjust the stack
-        xorl %eax,%eax                  # Return value
-        movl %ebx,(%edx)
-        movl %esp,4(%edx)               # Post-return %esp!
-        pushl %ecx                      # Make the call/return stack happy
-        movl %ebp,8(%edx)
-        movl %esi,12(%edx)
-        movl %edi,16(%edx)
-        movl %ecx,20(%edx)              # Return address
-        ret
-        .size setjmp,.-setjmp
-        .text
-        .align 4
-        .globl longjmp
-        .type longjmp, @function
-longjmp:
-#ifdef _REGPARM
-        xchgl %eax,%edx
-#else
-        movl 4(%esp),%edx               # jmp_ptr address
-        movl 8(%esp),%eax               # Return value
-#endif
-        movl (%edx),%ebx
-        movl 4(%edx),%esp
-        movl 8(%edx),%ebp
-        movl 12(%edx),%esi
-        movl 16(%edx),%edi
-        jmp *20(%edx)
-        .size longjmp,.-longjmp
diff --git a/arch/um/sys-i386/shared/sysdep/archsetjmp.h b/arch/um/sys-i386/shared/sysdep/archsetjmp.h
deleted file mode 100644
index 0f312085ce1d..000000000000
--- a/arch/um/sys-i386/shared/sysdep/archsetjmp.h
+++ /dev/null
@@ -1,22 +0,0 @@
-/*
- * arch/um/include/sysdep-i386/archsetjmp.h
- */
-#ifndef _KLIBC_ARCHSETJMP_H
-#define _KLIBC_ARCHSETJMP_H
-struct __jmp_buf {
-        unsigned int __ebx;
-        unsigned int __esp;
-        unsigned int __ebp;
-        unsigned int __esi;
-        unsigned int __edi;
-        unsigned int __eip;
-};
-typedef struct __jmp_buf jmp_buf[1];
-#define JB_IP __eip
-#define JB_SP __esp
-#endif                          /* _SETJMP_H */
diff --git a/arch/um/sys-i386/shared/sysdep/barrier.h b/arch/um/sys-i386/shared/sysdep/barrier.h
deleted file mode 100644
index b58d52c5b2f4..000000000000
--- a/arch/um/sys-i386/shared/sysdep/barrier.h
+++ /dev/null
@@ -1,9 +0,0 @@
-#ifndef __SYSDEP_I386_BARRIER_H
-#define __SYSDEP_I386_BARRIER_H
-/* Copied from include/asm-i386 for use by userspace.  i386 has the option
- * of using mfence, but I'm just using this, which works everywhere, for now.
- */
-#define mb() asm volatile("lock; addl $0,0(%esp)")
-#endif
diff --git a/arch/um/sys-i386/shared/sysdep/checksum.h b/arch/um/sys-i386/shared/sysdep/checksum.h
deleted file mode 100644
index ed47445f3905..000000000000
--- a/arch/um/sys-i386/shared/sysdep/checksum.h
+++ /dev/null
@@ -1,201 +0,0 @@
-/* 
- * Licensed under the GPL
- */
-#ifndef __UM_SYSDEP_CHECKSUM_H
-#define __UM_SYSDEP_CHECKSUM_H
-#include "linux/in6.h"
-#include "linux/string.h"
-/*
- * computes the checksum of a memory block at buff, length len,
- * and adds in "sum" (32-bit)
- *
- * returns a 32-bit number suitable for feeding into itself
- * or csum_tcpudp_magic
- *
- * this function must be called with even lengths, except
- * for the last fragment, which may be odd
- *
- * it's best to have buff aligned on a 32-bit boundary
- */
-__wsum csum_partial(const void *buff, int len, __wsum sum);
-/*
- *      Note: when you get a NULL pointer exception here this means someone
- *      passed in an incorrect kernel address to one of these functions.
- *
- *      If you use these functions directly please don't forget the
- *      access_ok().
- */
-static __inline__
-__wsum csum_partial_copy_nocheck(const void *src, void *dst,
-                                       int len, __wsum sum)
-{
-        memcpy(dst, src, len);
-        return csum_partial(dst, len, sum);
-}
-/*
- * the same as csum_partial, but copies from src while it
- * checksums, and handles user-space pointer exceptions correctly, when needed.
- *
- * here even more important to align src and dst on a 32-bit (or even
- * better 64-bit) boundary
- */
-static __inline__
-__wsum csum_partial_copy_from_user(const void __user *src, void *dst,
-                                         int len, __wsum sum, int *err_ptr)
-{
-        if (copy_from_user(dst, src, len)) {
-                *err_ptr = -EFAULT;
-                return (__force __wsum)-1;
-        }
-        return csum_partial(dst, len, sum);
-}
-/*
- *      This is a version of ip_compute_csum() optimized for IP headers,
- *      which always checksum on 4 octet boundaries.
- *
- *      By Jorge Cwik <jorge@laser.satlink.net>, adapted for linux by
- *      Arnt Gulbrandsen.
- */
-static inline __sum16 ip_fast_csum(const void *iph, unsigned int ihl)
-{
-        unsigned int sum;
-        __asm__ __volatile__(
-            "movl (%1), %0      ;\n"
-            "subl $4, %2        ;\n"
-            "jbe 2f             ;\n"
-            "addl 4(%1), %0     ;\n"
-            "adcl 8(%1), %0     ;\n"
-            "adcl 12(%1), %0    ;\n"
-"1:         adcl 16(%1), %0     ;\n"
-            "lea 4(%1), %1      ;\n"
-            "decl %2            ;\n"
-            "jne 1b             ;\n"
-            "adcl $0, %0        ;\n"
-            "movl %0, %2        ;\n"
-            "shrl $16, %0       ;\n"
-            "addw %w2, %w0      ;\n"
-            "adcl $0, %0        ;\n"
-            "notl %0            ;\n"
-"2:                             ;\n"
-        /* Since the input registers which are loaded with iph and ipl
-           are modified, we must also specify them as outputs, or gcc
-           will assume they contain their original values. */
-        : "=r" (sum), "=r" (iph), "=r" (ihl)
-        : "1" (iph), "2" (ihl)
-        : "memory");
-        return (__force __sum16)sum;
-}
-/*
- *      Fold a partial checksum
- */
-static inline __sum16 csum_fold(__wsum sum)
-{
-        __asm__(
-                "addl %1, %0            ;\n"
-                "adcl $0xffff, %0       ;\n"
-                : "=r" (sum)
-                : "r" ((__force u32)sum << 16),
-                  "0" ((__force u32)sum & 0xffff0000)
-        );
-        return (__force __sum16)(~(__force u32)sum >> 16);
-}
-static inline __wsum csum_tcpudp_nofold(__be32 saddr, __be32 daddr,
-                                                   unsigned short len,
-                                                   unsigned short proto,
-                                                   __wsum sum)
-{
-    __asm__(
-        "addl %1, %0    ;\n"
-        "adcl %2, %0    ;\n"
-        "adcl %3, %0    ;\n"
-        "adcl $0, %0    ;\n"
-        : "=r" (sum)
-        : "g" (daddr), "g"(saddr), "g"((len + proto) << 8), "0"(sum));
-    return sum;
-}
-/*
- * computes the checksum of the TCP/UDP pseudo-header
- * returns a 16-bit checksum, already complemented
- */
-static inline __sum16 csum_tcpudp_magic(__be32 saddr, __be32 daddr,
-                                                   unsigned short len,
-                                                   unsigned short proto,
-                                                   __wsum sum)
-{
-        return csum_fold(csum_tcpudp_nofold(saddr,daddr,len,proto,sum));
-}
-/*
- * this routine is used for miscellaneous IP-like checksums, mainly
- * in icmp.c
- */
-static inline __sum16 ip_compute_csum(const void *buff, int len)
-{
-    return csum_fold (csum_partial(buff, len, 0));
-}
-#define _HAVE_ARCH_IPV6_CSUM
-static __inline__ __sum16 csum_ipv6_magic(const struct in6_addr *saddr,
-                                          const struct in6_addr *daddr,
-                                          __u32 len, unsigned short proto,
-                                          __wsum sum)
-{
-        __asm__(
-                "addl 0(%1), %0         ;\n"
-                "adcl 4(%1), %0         ;\n"
-                "adcl 8(%1), %0         ;\n"
-                "adcl 12(%1), %0        ;\n"
-                "adcl 0(%2), %0         ;\n"
-                "adcl 4(%2), %0         ;\n"
-                "adcl 8(%2), %0         ;\n"
-                "adcl 12(%2), %0        ;\n"
-                "adcl %3, %0            ;\n"
-                "adcl %4, %0            ;\n"
-                "adcl $0, %0            ;\n"
-                : "=&r" (sum)
-                : "r" (saddr), "r" (daddr),
-                  "r"(htonl(len)), "r"(htonl(proto)), "0"(sum));
-        return csum_fold(sum);
-}
-/*
- *      Copy and checksum to user
- */
-#define HAVE_CSUM_COPY_USER
-static __inline__ __wsum csum_and_copy_to_user(const void *src,
-                                                     void __user *dst,
-                                                     int len, __wsum sum, int *err_ptr)
-{
-        if (access_ok(VERIFY_WRITE, dst, len)) {
-                if (copy_to_user(dst, src, len)) {
-                        *err_ptr = -EFAULT;
-                        return (__force __wsum)-1;
-                }
-                return csum_partial(src, len, sum);
-        }
-        if (len)
-                *err_ptr = -EFAULT;
-        return (__force __wsum)-1; /* invalid checksum */
-}
-#endif
diff --git a/arch/um/sys-i386/shared/sysdep/faultinfo.h b/arch/um/sys-i386/shared/sysdep/faultinfo.h
deleted file mode 100644
index db437cc373bc..000000000000
--- a/arch/um/sys-i386/shared/sysdep/faultinfo.h
+++ /dev/null
@@ -1,29 +0,0 @@
-/*
- * Copyright (C) 2004 Fujitsu Siemens Computers GmbH
- * Author: Bodo Stroesser <bstroesser@fujitsu-siemens.com>
- * Licensed under the GPL
- */
-#ifndef __FAULTINFO_I386_H
-#define __FAULTINFO_I386_H
-/* this structure contains the full arch-specific faultinfo
- * from the traps.
- * On i386, ptrace_faultinfo unfortunately doesn't provide
- * all the info, since trap_no is missing.
- * All common elements are defined at the same position in
- * both structures, thus making it easy to copy the
- * contents without knowledge about the structure elements.
- */
-struct faultinfo {
-        int error_code; /* in ptrace_faultinfo misleadingly called is_write */
-        unsigned long cr2; /* in ptrace_faultinfo called addr */
-        int trap_no; /* missing in ptrace_faultinfo */
-};
-#define FAULT_WRITE(fi) ((fi).error_code & 2)
-#define FAULT_ADDRESS(fi) ((fi).cr2)
-#define PTRACE_FULL_FAULTINFO 0
-#endif
diff --git a/arch/um/sys-i386/shared/sysdep/host_ldt.h b/arch/um/sys-i386/shared/sysdep/host_ldt.h
deleted file mode 100644
index 0953cc4df652..000000000000
--- a/arch/um/sys-i386/shared/sysdep/host_ldt.h
+++ /dev/null
@@ -1,34 +0,0 @@
-#ifndef __ASM_HOST_LDT_I386_H
-#define __ASM_HOST_LDT_I386_H
-#include <asm/ldt.h>
-/*
- * macros stolen from include/asm-i386/desc.h
- */
-#define LDT_entry_a(info) \
-        ((((info)->base_addr & 0x0000ffff) << 16) | ((info)->limit & 0x0ffff))
-#define LDT_entry_b(info) \
-        (((info)->base_addr & 0xff000000) | \
-        (((info)->base_addr & 0x00ff0000) >> 16) | \
-        ((info)->limit & 0xf0000) | \
-        (((info)->read_exec_only ^ 1) << 9) | \
-        ((info)->contents << 10) | \
-        (((info)->seg_not_present ^ 1) << 15) | \
-        ((info)->seg_32bit << 22) | \
-        ((info)->limit_in_pages << 23) | \
-        ((info)->useable << 20) | \
-        0x7000)
-#define LDT_empty(info) (\
-        (info)->base_addr       == 0    && \
-        (info)->limit           == 0    && \
-        (info)->contents        == 0    && \
-        (info)->read_exec_only  == 1    && \
-        (info)->seg_32bit       == 0    && \
-        (info)->limit_in_pages  == 0    && \
-        (info)->seg_not_present == 1    && \
-        (info)->useable         == 0    )
-#endif
diff --git a/arch/um/sys-i386/shared/sysdep/kernel-offsets.h b/arch/um/sys-i386/shared/sysdep/kernel-offsets.h
deleted file mode 100644
index 5868526b5eef..000000000000
--- a/arch/um/sys-i386/shared/sysdep/kernel-offsets.h
+++ /dev/null
@@ -1,21 +0,0 @@
-#include <linux/stddef.h>
-#include <linux/sched.h>
-#include <linux/elf.h>
-#include <linux/crypto.h>
-#include <asm/mman.h>
-#define DEFINE(sym, val) \
-        asm volatile("\n->" #sym " %0 " #val : : "i" (val))
-#define STR(x) #x
-#define DEFINE_STR(sym, val) asm volatile("\n->" #sym " " STR(val) " " #val: : )
-#define BLANK() asm volatile("\n->" : : )
-#define OFFSET(sym, str, mem) \
-        DEFINE(sym, offsetof(struct str, mem));
-void foo(void)
-{
-#include <common-offsets.h>
-}
diff --git a/arch/um/sys-i386/shared/sysdep/ptrace.h b/arch/um/sys-i386/shared/sysdep/ptrace.h
deleted file mode 100644
index c398a5076111..000000000000
--- a/arch/um/sys-i386/shared/sysdep/ptrace.h
+++ /dev/null
@@ -1,171 +0,0 @@
-/*
- * Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
- * Licensed under the GPL
- */
-#ifndef __SYSDEP_I386_PTRACE_H
-#define __SYSDEP_I386_PTRACE_H
-#include "user_constants.h"
-#include "sysdep/faultinfo.h"
-#define MAX_REG_NR (UM_FRAME_SIZE / sizeof(unsigned long))
-#define MAX_REG_OFFSET (UM_FRAME_SIZE)
-static inline void update_debugregs(int seq) {}
-/* syscall emulation path in ptrace */
-#ifndef PTRACE_SYSEMU
-#define PTRACE_SYSEMU 31
-#endif
-void set_using_sysemu(int value);
-int get_using_sysemu(void);
-extern int sysemu_supported;
-#include "skas_ptregs.h"
-#define REGS_IP(r) ((r)[HOST_IP])
-#define REGS_SP(r) ((r)[HOST_SP])
-#define REGS_EFLAGS(r) ((r)[HOST_EFLAGS])
-#define REGS_EAX(r) ((r)[HOST_EAX])
-#define REGS_EBX(r) ((r)[HOST_EBX])
-#define REGS_ECX(r) ((r)[HOST_ECX])
-#define REGS_EDX(r) ((r)[HOST_EDX])
-#define REGS_ESI(r) ((r)[HOST_ESI])
-#define REGS_EDI(r) ((r)[HOST_EDI])
-#define REGS_EBP(r) ((r)[HOST_EBP])
-#define REGS_CS(r) ((r)[HOST_CS])
-#define REGS_SS(r) ((r)[HOST_SS])
-#define REGS_DS(r) ((r)[HOST_DS])
-#define REGS_ES(r) ((r)[HOST_ES])
-#define REGS_FS(r) ((r)[HOST_FS])
-#define REGS_GS(r) ((r)[HOST_GS])
-#define REGS_SET_SYSCALL_RETURN(r, res) REGS_EAX(r) = (res)
-#define REGS_RESTART_SYSCALL(r) IP_RESTART_SYSCALL(REGS_IP(r))
-#ifndef PTRACE_SYSEMU_SINGLESTEP
-#define PTRACE_SYSEMU_SINGLESTEP 32
-#endif
-struct uml_pt_regs {
-        unsigned long gp[MAX_REG_NR];
-        unsigned long fp[HOST_FPX_SIZE];
-        struct faultinfo faultinfo;
-        long syscall;
-        int is_user;
-};
-#define EMPTY_UML_PT_REGS { }
-#define UPT_IP(r) REGS_IP((r)->gp)
-#define UPT_SP(r) REGS_SP((r)->gp)
-#define UPT_EFLAGS(r) REGS_EFLAGS((r)->gp)
-#define UPT_EAX(r) REGS_EAX((r)->gp)
-#define UPT_EBX(r) REGS_EBX((r)->gp)
-#define UPT_ECX(r) REGS_ECX((r)->gp)
-#define UPT_EDX(r) REGS_EDX((r)->gp)
-#define UPT_ESI(r) REGS_ESI((r)->gp)
-#define UPT_EDI(r) REGS_EDI((r)->gp)
-#define UPT_EBP(r) REGS_EBP((r)->gp)
-#define UPT_ORIG_EAX(r) ((r)->syscall)
-#define UPT_CS(r) REGS_CS((r)->gp)
-#define UPT_SS(r) REGS_SS((r)->gp)
-#define UPT_DS(r) REGS_DS((r)->gp)
-#define UPT_ES(r) REGS_ES((r)->gp)
-#define UPT_FS(r) REGS_FS((r)->gp)
-#define UPT_GS(r) REGS_GS((r)->gp)
-#define UPT_SYSCALL_ARG1(r) UPT_EBX(r)
-#define UPT_SYSCALL_ARG2(r) UPT_ECX(r)
-#define UPT_SYSCALL_ARG3(r) UPT_EDX(r)
-#define UPT_SYSCALL_ARG4(r) UPT_ESI(r)
-#define UPT_SYSCALL_ARG5(r) UPT_EDI(r)
-#define UPT_SYSCALL_ARG6(r) UPT_EBP(r)
-extern int user_context(unsigned long sp);
-#define UPT_IS_USER(r) ((r)->is_user)
-struct syscall_args {
-        unsigned long args[6];
-};
-#define SYSCALL_ARGS(r) ((struct syscall_args) \
-                         { .args = { UPT_SYSCALL_ARG1(r),       \
-                                     UPT_SYSCALL_ARG2(r),       \
-                                     UPT_SYSCALL_ARG3(r),       \
-                                     UPT_SYSCALL_ARG4(r),       \
-                                     UPT_SYSCALL_ARG5(r),       \
-                                     UPT_SYSCALL_ARG6(r) } } )
-#define UPT_REG(regs, reg) \
-        ({      unsigned long val; \
-                switch(reg){ \
-                case EIP: val = UPT_IP(regs); break; \
-                case UESP: val = UPT_SP(regs); break; \
-                case EAX: val = UPT_EAX(regs); break; \
-                case EBX: val = UPT_EBX(regs); break; \
-                case ECX: val = UPT_ECX(regs); break; \
-                case EDX: val = UPT_EDX(regs); break; \
-                case ESI: val = UPT_ESI(regs); break; \
-                case EDI: val = UPT_EDI(regs); break; \
-                case EBP: val = UPT_EBP(regs); break; \
-                case ORIG_EAX: val = UPT_ORIG_EAX(regs); break; \
-                case CS: val = UPT_CS(regs); break; \
-                case SS: val = UPT_SS(regs); break; \
-                case DS: val = UPT_DS(regs); break; \
-                case ES: val = UPT_ES(regs); break; \
-                case FS: val = UPT_FS(regs); break; \
-                case GS: val = UPT_GS(regs); break; \
-                case EFL: val = UPT_EFLAGS(regs); break; \
-                default :  \
-                        panic("Bad register in UPT_REG : %d\n", reg);  \
-                        val = -1; \
-                } \
-                val; \
-        })
-#define UPT_SET(regs, reg, val) \
-        do { \
-                switch(reg){ \
-                case EIP: UPT_IP(regs) = val; break; \
-                case UESP: UPT_SP(regs) = val; break; \
-                case EAX: UPT_EAX(regs) = val; break; \
-                case EBX: UPT_EBX(regs) = val; break; \
-                case ECX: UPT_ECX(regs) = val; break; \
-                case EDX: UPT_EDX(regs) = val; break; \
-                case ESI: UPT_ESI(regs) = val; break; \
-                case EDI: UPT_EDI(regs) = val; break; \
-                case EBP: UPT_EBP(regs) = val; break; \
-                case ORIG_EAX: UPT_ORIG_EAX(regs) = val; break; \
-                case CS: UPT_CS(regs) = val; break; \
-                case SS: UPT_SS(regs) = val; break; \
-                case DS: UPT_DS(regs) = val; break; \
-                case ES: UPT_ES(regs) = val; break; \
-                case FS: UPT_FS(regs) = val; break; \
-                case GS: UPT_GS(regs) = val; break; \
-                case EFL: UPT_EFLAGS(regs) = val; break; \
-                default :  \
-                        panic("Bad register in UPT_SET : %d\n", reg);  \
-                        break; \
-                } \
-        } while (0)
-#define UPT_SET_SYSCALL_RETURN(r, res) \
-        REGS_SET_SYSCALL_RETURN((r)->regs, (res))
-#define UPT_RESTART_SYSCALL(r) REGS_RESTART_SYSCALL((r)->gp)
-#define UPT_ORIG_SYSCALL(r) UPT_EAX(r)
-#define UPT_SYSCALL_NR(r) UPT_ORIG_EAX(r)
-#define UPT_SYSCALL_RET(r) UPT_EAX(r)
-#define UPT_FAULTINFO(r) (&(r)->faultinfo)
-extern void arch_init_registers(int pid);
-#endif
diff --git a/arch/um/sys-i386/shared/sysdep/ptrace_user.h b/arch/um/sys-i386/shared/sysdep/ptrace_user.h
deleted file mode 100644
index ef56247e4143..000000000000
--- a/arch/um/sys-i386/shared/sysdep/ptrace_user.h
+++ /dev/null
@@ -1,50 +0,0 @@
-/* 
- * Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
- * Licensed under the GPL
- */
-#ifndef __SYSDEP_I386_PTRACE_USER_H__
-#define __SYSDEP_I386_PTRACE_USER_H__
-#include <sys/ptrace.h>
-#include <linux/ptrace.h>
-#include <asm/ptrace.h>
-#include "user_constants.h"
-#define PT_OFFSET(r) ((r) * sizeof(long))
-#define PT_SYSCALL_NR(regs) ((regs)[ORIG_EAX])
-#define PT_SYSCALL_NR_OFFSET PT_OFFSET(ORIG_EAX)
-#define PT_SYSCALL_ARG1_OFFSET PT_OFFSET(EBX)
-#define PT_SYSCALL_ARG2_OFFSET PT_OFFSET(ECX)
-#define PT_SYSCALL_ARG3_OFFSET PT_OFFSET(EDX)
-#define PT_SYSCALL_ARG4_OFFSET PT_OFFSET(ESI)
-#define PT_SYSCALL_ARG5_OFFSET PT_OFFSET(EDI)
-#define PT_SYSCALL_ARG6_OFFSET PT_OFFSET(EBP)
-#define PT_SYSCALL_RET_OFFSET PT_OFFSET(EAX)
-#define REGS_SYSCALL_NR EAX /* This is used before a system call */
-#define REGS_SYSCALL_ARG1 EBX
-#define REGS_SYSCALL_ARG2 ECX
-#define REGS_SYSCALL_ARG3 EDX
-#define REGS_SYSCALL_ARG4 ESI
-#define REGS_SYSCALL_ARG5 EDI
-#define REGS_SYSCALL_ARG6 EBP
-#define REGS_IP_INDEX EIP
-#define REGS_SP_INDEX UESP
-#define PT_IP_OFFSET PT_OFFSET(EIP)
-#define PT_IP(regs) ((regs)[EIP])
-#define PT_SP_OFFSET PT_OFFSET(UESP)
-#define PT_SP(regs) ((regs)[UESP])
-#define FP_SIZE ((HOST_FPX_SIZE > HOST_FP_SIZE) ? HOST_FPX_SIZE : HOST_FP_SIZE)
-#ifndef FRAME_SIZE
-#define FRAME_SIZE (17)
-#endif
-#endif
diff --git a/arch/um/sys-i386/shared/sysdep/sc.h b/arch/um/sys-i386/shared/sysdep/sc.h
deleted file mode 100644
index c57d1780ad37..000000000000
--- a/arch/um/sys-i386/shared/sysdep/sc.h
+++ /dev/null
@@ -1,44 +0,0 @@
-#ifndef __SYSDEP_I386_SC_H
-#define __SYSDEP_I386_SC_H
-#include <user_constants.h>
-#define SC_OFFSET(sc, field) \
-        *((unsigned long *) &(((char *) (sc))[HOST_##field]))
-#define SC_FP_OFFSET(sc, field) \
-        *((unsigned long *) &(((char *) (SC_FPSTATE(sc)))[HOST_##field]))
-#define SC_FP_OFFSET_PTR(sc, field, type) \
-        ((type *) &(((char *) (SC_FPSTATE(sc)))[HOST_##field]))
-#define SC_IP(sc) SC_OFFSET(sc, SC_IP)
-#define SC_SP(sc) SC_OFFSET(sc, SC_SP)
-#define SC_FS(sc) SC_OFFSET(sc, SC_FS)
-#define SC_GS(sc) SC_OFFSET(sc, SC_GS)
-#define SC_DS(sc) SC_OFFSET(sc, SC_DS)
-#define SC_ES(sc) SC_OFFSET(sc, SC_ES)
-#define SC_SS(sc) SC_OFFSET(sc, SC_SS)
-#define SC_CS(sc) SC_OFFSET(sc, SC_CS)
-#define SC_EFLAGS(sc) SC_OFFSET(sc, SC_EFLAGS)
-#define SC_EAX(sc) SC_OFFSET(sc, SC_EAX)
-#define SC_EBX(sc) SC_OFFSET(sc, SC_EBX)
-#define SC_ECX(sc) SC_OFFSET(sc, SC_ECX)
-#define SC_EDX(sc) SC_OFFSET(sc, SC_EDX)
-#define SC_EDI(sc) SC_OFFSET(sc, SC_EDI)
-#define SC_ESI(sc) SC_OFFSET(sc, SC_ESI)
-#define SC_EBP(sc) SC_OFFSET(sc, SC_EBP)
-#define SC_TRAPNO(sc) SC_OFFSET(sc, SC_TRAPNO)
-#define SC_ERR(sc) SC_OFFSET(sc, SC_ERR)
-#define SC_CR2(sc) SC_OFFSET(sc, SC_CR2)
-#define SC_FPSTATE(sc) SC_OFFSET(sc, SC_FPSTATE)
-#define SC_SIGMASK(sc) SC_OFFSET(sc, SC_SIGMASK)
-#define SC_FP_CW(sc) SC_FP_OFFSET(sc, SC_FP_CW)
-#define SC_FP_SW(sc) SC_FP_OFFSET(sc, SC_FP_SW)
-#define SC_FP_TAG(sc) SC_FP_OFFSET(sc, SC_FP_TAG)
-#define SC_FP_IPOFF(sc) SC_FP_OFFSET(sc, SC_FP_IPOFF)
-#define SC_FP_CSSEL(sc) SC_FP_OFFSET(sc, SC_FP_CSSEL)
-#define SC_FP_DATAOFF(sc) SC_FP_OFFSET(sc, SC_FP_DATAOFF)
-#define SC_FP_DATASEL(sc) SC_FP_OFFSET(sc, SC_FP_DATASEL)
-#define SC_FP_ST(sc) SC_FP_OFFSET_PTR(sc, SC_FP_ST, struct _fpstate)
-#define SC_FXSR_ENV(sc) SC_FP_OFFSET_PTR(sc, SC_FXSR_ENV, void)
-#endif
diff --git a/arch/um/sys-i386/shared/sysdep/sigcontext.h b/arch/um/sys-i386/shared/sysdep/sigcontext.h
deleted file mode 100644
index f583c87111a0..000000000000
--- a/arch/um/sys-i386/shared/sysdep/sigcontext.h
+++ /dev/null
@@ -1,26 +0,0 @@
-/* 
- * Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
- * Licensed under the GPL
- */
-#ifndef __SYS_SIGCONTEXT_I386_H
-#define __SYS_SIGCONTEXT_I386_H
-#include "sysdep/sc.h"
-#define IP_RESTART_SYSCALL(ip) ((ip) -= 2)
-#define GET_FAULTINFO_FROM_SC(fi, sc) \
-        { \
-                (fi).cr2 = SC_CR2(sc); \
-                (fi).error_code = SC_ERR(sc); \
-                (fi).trap_no = SC_TRAPNO(sc); \
-        }
-/* This is Page Fault */
-#define SEGV_IS_FIXABLE(fi)     ((fi)->trap_no == 14)
-/* SKAS3 has no trap_no on i386, but get_skas_faultinfo() sets it to 0. */
-#define SEGV_MAYBE_FIXABLE(fi)  ((fi)->trap_no == 0 && ptrace_faultinfo)
-#endif
diff --git a/arch/um/sys-i386/shared/sysdep/skas_ptrace.h b/arch/um/sys-i386/shared/sysdep/skas_ptrace.h
deleted file mode 100644
index e27b8a791773..000000000000
--- a/arch/um/sys-i386/shared/sysdep/skas_ptrace.h
+++ /dev/null
@@ -1,22 +0,0 @@
-/*
- * Copyright (C) 2000, 2001, 2002 Jeff Dike (jdike@karaya.com)
- * Licensed under the GPL
- */
-#ifndef __SYSDEP_I386_SKAS_PTRACE_H
-#define __SYSDEP_I386_SKAS_PTRACE_H
-struct ptrace_faultinfo {
-        int is_write;
-        unsigned long addr;
-};
-struct ptrace_ldt {
-        int func;
-        void *ptr;
-        unsigned long bytecount;
-};
-#define PTRACE_LDT 54
-#endif
diff --git a/arch/um/sys-i386/shared/sysdep/stub.h b/arch/um/sys-i386/shared/sysdep/stub.h
deleted file mode 100644
index 977dedd9221b..000000000000
--- a/arch/um/sys-i386/shared/sysdep/stub.h
+++ /dev/null
@@ -1,101 +0,0 @@
-/*
- * Copyright (C) 2004 Jeff Dike (jdike@addtoit.com)
- * Licensed under the GPL
- */
-#ifndef __SYSDEP_STUB_H
-#define __SYSDEP_STUB_H
-#include <sys/mman.h>
-#include <asm/ptrace.h>
-#include <asm/unistd.h>
-#include "as-layout.h"
-#include "stub-data.h"
-#include "kern_constants.h"
-extern void stub_segv_handler(int sig);
-extern void stub_clone_handler(void);
-#define STUB_SYSCALL_RET EAX
-#define STUB_MMAP_NR __NR_mmap2
-#define MMAP_OFFSET(o) ((o) >> UM_KERN_PAGE_SHIFT)
-static inline long stub_syscall0(long syscall)
-{
-        long ret;
-        __asm__ volatile ("int $0x80" : "=a" (ret) : "0" (syscall));
-        return ret;
-}
-static inline long stub_syscall1(long syscall, long arg1)
-{
-        long ret;
-        __asm__ volatile ("int $0x80" : "=a" (ret) : "0" (syscall), "b" (arg1));
-        return ret;
-}
-static inline long stub_syscall2(long syscall, long arg1, long arg2)
-{
-        long ret;
-        __asm__ volatile ("int $0x80" : "=a" (ret) : "0" (syscall), "b" (arg1),
-                        "c" (arg2));
-        return ret;
-}
-static inline long stub_syscall3(long syscall, long arg1, long arg2, long arg3)
-{
-        long ret;
-        __asm__ volatile ("int $0x80" : "=a" (ret) : "0" (syscall), "b" (arg1),
-                        "c" (arg2), "d" (arg3));
-        return ret;
-}
-static inline long stub_syscall4(long syscall, long arg1, long arg2, long arg3,
-                                 long arg4)
-{
-        long ret;
-        __asm__ volatile ("int $0x80" : "=a" (ret) : "0" (syscall), "b" (arg1),
-                        "c" (arg2), "d" (arg3), "S" (arg4));
-        return ret;
-}
-static inline long stub_syscall5(long syscall, long arg1, long arg2, long arg3,
-                                 long arg4, long arg5)
-{
-        long ret;
-        __asm__ volatile ("int $0x80" : "=a" (ret) : "0" (syscall), "b" (arg1),
-                        "c" (arg2), "d" (arg3), "S" (arg4), "D" (arg5));
-        return ret;
-}
-static inline void trap_myself(void)
-{
-        __asm("int3");
-}
-static inline void remap_stack(int fd, unsigned long offset)
-{
-        __asm__ volatile ("movl %%eax,%%ebp ; movl %0,%%eax ; int $0x80 ;"
-                          "movl %7, %%ebx ; movl %%eax, (%%ebx)"
-                          : : "g" (STUB_MMAP_NR), "b" (STUB_DATA),
-                            "c" (UM_KERN_PAGE_SIZE),
-                            "d" (PROT_READ | PROT_WRITE),
-                            "S" (MAP_FIXED | MAP_SHARED), "D" (fd),
-                            "a" (offset),
-                            "i" (&((struct stub_data *) STUB_DATA)->err)
-                          : "memory");
-}
-#endif
diff --git a/arch/um/sys-i386/shared/sysdep/syscalls.h b/arch/um/sys-i386/shared/sysdep/syscalls.h
deleted file mode 100644
index 05cb796aecb5..000000000000
--- a/arch/um/sys-i386/shared/sysdep/syscalls.h
+++ /dev/null
@@ -1,20 +0,0 @@
-/* 
- * Copyright (C) 2000 - 2008 Jeff Dike (jdike@{addtoit,linux.intel}.com)
- * Licensed under the GPL
- */
-#include "asm/unistd.h"
-#include "sysdep/ptrace.h"
-typedef long syscall_handler_t(struct pt_regs);
-/* Not declared on x86, incompatible declarations on x86_64, so these have
- * to go here rather than in sys_call_table.c
- */
-extern syscall_handler_t sys_rt_sigaction;
-extern syscall_handler_t *sys_call_table[];
-#define EXECUTE_SYSCALL(syscall, regs) \
-        ((long (*)(struct syscall_args)) \
-         (*sys_call_table[syscall]))(SYSCALL_ARGS(&regs->regs))
diff --git a/arch/um/sys-i386/shared/sysdep/system.h b/arch/um/sys-i386/shared/sysdep/system.h
deleted file mode 100644
index d1b93c436200..000000000000
--- a/arch/um/sys-i386/shared/sysdep/system.h
+++ /dev/null
@@ -1,132 +0,0 @@
-#ifndef _ASM_X86_SYSTEM_H_
-#define _ASM_X86_SYSTEM_H_
-#include <asm/asm.h>
-#include <asm/segment.h>
-#include <asm/cpufeature.h>
-#include <asm/cmpxchg.h>
-#include <asm/nops.h>
-#include <linux/kernel.h>
-#include <linux/irqflags.h>
-/* entries in ARCH_DLINFO: */
-#ifdef CONFIG_IA32_EMULATION
-# define AT_VECTOR_SIZE_ARCH 2
-#else
-# define AT_VECTOR_SIZE_ARCH 1
-#endif
-extern unsigned long arch_align_stack(unsigned long sp);
-void default_idle(void);
-/*
- * Force strict CPU ordering.
- * And yes, this is required on UP too when we're talking
- * to devices.
- */
-#ifdef CONFIG_X86_32
-/*
- * Some non-Intel clones support out of order store. wmb() ceases to be a
- * nop for these.
- */
-#define mb() alternative("lock; addl $0,0(%%esp)", "mfence", X86_FEATURE_XMM2)
-#define rmb() alternative("lock; addl $0,0(%%esp)", "lfence", X86_FEATURE_XMM2)
-#define wmb() alternative("lock; addl $0,0(%%esp)", "sfence", X86_FEATURE_XMM)
-#else
-#define mb()    asm volatile("mfence":::"memory")
-#define rmb()   asm volatile("lfence":::"memory")
-#define wmb()   asm volatile("sfence" ::: "memory")
-#endif
-/**
- * read_barrier_depends - Flush all pending reads that subsequents reads
- * depend on.
- *
- * No data-dependent reads from memory-like regions are ever reordered
- * over this barrier.  All reads preceding this primitive are guaranteed
- * to access memory (but not necessarily other CPUs' caches) before any
- * reads following this primitive that depend on the data return by
- * any of the preceding reads.  This primitive is much lighter weight than
- * rmb() on most CPUs, and is never heavier weight than is
- * rmb().
- *
- * These ordering constraints are respected by both the local CPU
- * and the compiler.
- *
- * Ordering is not guaranteed by anything other than these primitives,
- * not even by data dependencies.  See the documentation for
- * memory_barrier() for examples and URLs to more information.
- *
- * For example, the following code would force ordering (the initial
- * value of "a" is zero, "b" is one, and "p" is "&a"):
- *
- * <programlisting>
- *      CPU 0                           CPU 1
- *
- *      b = 2;
- *      memory_barrier();
- *      p = &b;                         q = p;
- *                                      read_barrier_depends();
- *                                      d = *q;
- * </programlisting>
- *
- * because the read of "*q" depends on the read of "p" and these
- * two reads are separated by a read_barrier_depends().  However,
- * the following code, with the same initial values for "a" and "b":
- *
- * <programlisting>
- *      CPU 0                           CPU 1
- *
- *      a = 2;
- *      memory_barrier();
- *      b = 3;                          y = b;
- *                                      read_barrier_depends();
- *                                      x = a;
- * </programlisting>
- *
- * does not enforce ordering, since there is no data dependency between
- * the read of "a" and the read of "b".  Therefore, on some CPUs, such
- * as Alpha, "y" could be set to 3 and "x" to 0.  Use rmb()
- * in cases like this where there are no data dependencies.
- **/
-#define read_barrier_depends()  do { } while (0)
-#ifdef CONFIG_SMP
-#define smp_mb()        mb()
-#ifdef CONFIG_X86_PPRO_FENCE
-# define smp_rmb()      rmb()
-#else
-# define smp_rmb()      barrier()
-#endif
-#ifdef CONFIG_X86_OOSTORE
-# define smp_wmb()      wmb()
-#else
-# define smp_wmb()      barrier()
-#endif
-#define smp_read_barrier_depends()      read_barrier_depends()
-#define set_mb(var, value) do { (void)xchg(&var, value); } while (0)
-#else
-#define smp_mb()        barrier()
-#define smp_rmb()       barrier()
-#define smp_wmb()       barrier()
-#define smp_read_barrier_depends()      do { } while (0)
-#define set_mb(var, value) do { var = value; barrier(); } while (0)
-#endif
-/*
- * Stop RDTSC speculation. This is needed when you need to use RDTSC
- * (or get_cycles or vread that possibly accesses the TSC) in a defined
- * code region.
- *
- * (Could use an alternative three way for this if there was one.)
- */
-static inline void rdtsc_barrier(void)
-{
-        alternative(ASM_NOP3, "mfence", X86_FEATURE_MFENCE_RDTSC);
-        alternative(ASM_NOP3, "lfence", X86_FEATURE_LFENCE_RDTSC);
-}
-#endif
diff --git a/arch/um/sys-i386/shared/sysdep/tls.h b/arch/um/sys-i386/shared/sysdep/tls.h
deleted file mode 100644
index 34550755b2a1..000000000000
--- a/arch/um/sys-i386/shared/sysdep/tls.h
+++ /dev/null
@@ -1,32 +0,0 @@
-#ifndef _SYSDEP_TLS_H
-#define _SYSDEP_TLS_H
-# ifndef __KERNEL__
-/* Change name to avoid conflicts with the original one from <asm/ldt.h>, which
- * may be named user_desc (but in 2.4 and in header matching its API was named
- * modify_ldt_ldt_s). */
-typedef struct um_dup_user_desc {
-        unsigned int  entry_number;
-        unsigned int  base_addr;
-        unsigned int  limit;
-        unsigned int  seg_32bit:1;
-        unsigned int  contents:2;
-        unsigned int  read_exec_only:1;
-        unsigned int  limit_in_pages:1;
-        unsigned int  seg_not_present:1;
-        unsigned int  useable:1;
-} user_desc_t;
-# else /* __KERNEL__ */
-#  include <ldt.h>
-typedef struct user_desc user_desc_t;
-# endif /* __KERNEL__ */
-#define GDT_ENTRY_TLS_MIN_I386 6
-#define GDT_ENTRY_TLS_MIN_X86_64 12
-#endif /* _SYSDEP_TLS_H */
diff --git a/arch/um/sys-i386/shared/sysdep/vm-flags.h b/arch/um/sys-i386/shared/sysdep/vm-flags.h
deleted file mode 100644
index e0d24c568dbc..000000000000
--- a/arch/um/sys-i386/shared/sysdep/vm-flags.h
+++ /dev/null
@@ -1,14 +0,0 @@
-/*
- * Copyright (C) 2004 Jeff Dike (jdike@addtoit.com)
- * Licensed under the GPL
- */
-#ifndef __VM_FLAGS_I386_H
-#define __VM_FLAGS_I386_H
-#define VM_DATA_DEFAULT_FLAGS \
-        (VM_READ | VM_WRITE | \
-        ((current->personality & READ_IMPLIES_EXEC) ? VM_EXEC : 0 ) | \
-                 VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
-#endif
diff --git a/arch/um/sys-i386/signal.c b/arch/um/sys-i386/signal.c
deleted file mode 100644
index 89a46626bfd8..000000000000
--- a/arch/um/sys-i386/signal.c
+++ /dev/null
@@ -1,508 +0,0 @@
-/*
- * Copyright (C) 2004 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
- * Licensed under the GPL
- */
-#include <linux/ptrace.h>
-#include <asm/unistd.h>
-#include <asm/uaccess.h>
-#include <asm/ucontext.h>
-#include "frame_kern.h"
-#include "skas.h"
-void copy_sc(struct uml_pt_regs *regs, void *from)
-{
-        struct sigcontext *sc = from;
-        REGS_GS(regs->gp) = sc->gs;
-        REGS_FS(regs->gp) = sc->fs;
-        REGS_ES(regs->gp) = sc->es;
-        REGS_DS(regs->gp) = sc->ds;
-        REGS_EDI(regs->gp) = sc->di;
-        REGS_ESI(regs->gp) = sc->si;
-        REGS_EBP(regs->gp) = sc->bp;
-        REGS_SP(regs->gp) = sc->sp;
-        REGS_EBX(regs->gp) = sc->bx;
-        REGS_EDX(regs->gp) = sc->dx;
-        REGS_ECX(regs->gp) = sc->cx;
-        REGS_EAX(regs->gp) = sc->ax;
-        REGS_IP(regs->gp) = sc->ip;
-        REGS_CS(regs->gp) = sc->cs;
-        REGS_EFLAGS(regs->gp) = sc->flags;
-        REGS_SS(regs->gp) = sc->ss;
-}
-/*
- * FPU tag word conversions.
- */
-static inline unsigned short twd_i387_to_fxsr(unsigned short twd)
-{
-        unsigned int tmp; /* to avoid 16 bit prefixes in the code */
-        /* Transform each pair of bits into 01 (valid) or 00 (empty) */
-        tmp = ~twd;
-        tmp = (tmp | (tmp>>1)) & 0x5555; /* 0V0V0V0V0V0V0V0V */
-        /* and move the valid bits to the lower byte. */
-        tmp = (tmp | (tmp >> 1)) & 0x3333; /* 00VV00VV00VV00VV */
-        tmp = (tmp | (tmp >> 2)) & 0x0f0f; /* 0000VVVV0000VVVV */
-        tmp = (tmp | (tmp >> 4)) & 0x00ff; /* 00000000VVVVVVVV */
-        return tmp;
-}
-static inline unsigned long twd_fxsr_to_i387(struct user_fxsr_struct *fxsave)
-{
-        struct _fpxreg *st = NULL;
-        unsigned long twd = (unsigned long) fxsave->twd;
-        unsigned long tag;
-        unsigned long ret = 0xffff0000;
-        int i;
-#define FPREG_ADDR(f, n)        ((char *)&(f)->st_space + (n) * 16)
-        for (i = 0; i < 8; i++) {
-                if (twd & 0x1) {
-                        st = (struct _fpxreg *) FPREG_ADDR(fxsave, i);
-                        switch (st->exponent & 0x7fff) {
-                        case 0x7fff:
-                                tag = 2;                /* Special */
-                                break;
-                        case 0x0000:
-                                if ( !st->significand[0] &&
-                                     !st->significand[1] &&
-                                     !st->significand[2] &&
-                                     !st->significand[3] ) {
-                                        tag = 1;        /* Zero */
-                                } else {
-                                        tag = 2;        /* Special */
-                                }
-                                break;
-                        default:
-                                if (st->significand[3] & 0x8000) {
-                                        tag = 0;        /* Valid */
-                                } else {
-                                        tag = 2;        /* Special */
-                                }
-                                break;
-                        }
-                } else {
-                        tag = 3;                        /* Empty */
-                }
-                ret |= (tag << (2 * i));
-                twd = twd >> 1;
-        }
-        return ret;
-}
-static int convert_fxsr_to_user(struct _fpstate __user *buf,
-                                struct user_fxsr_struct *fxsave)
-{
-        unsigned long env[7];
-        struct _fpreg __user *to;
-        struct _fpxreg *from;
-        int i;
-        env[0] = (unsigned long)fxsave->cwd | 0xffff0000ul;
-        env[1] = (unsigned long)fxsave->swd | 0xffff0000ul;
-        env[2] = twd_fxsr_to_i387(fxsave);
-        env[3] = fxsave->fip;
-        env[4] = fxsave->fcs | ((unsigned long)fxsave->fop << 16);
-        env[5] = fxsave->foo;
-        env[6] = fxsave->fos;
-        if (__copy_to_user(buf, env, 7 * sizeof(unsigned long)))
-                return 1;
-        to = &buf->_st[0];
-        from = (struct _fpxreg *) &fxsave->st_space[0];
-        for (i = 0; i < 8; i++, to++, from++) {
-                unsigned long __user *t = (unsigned long __user *)to;
-                unsigned long *f = (unsigned long *)from;
-                if (__put_user(*f, t) ||
-                                __put_user(*(f + 1), t + 1) ||
-                                __put_user(from->exponent, &to->exponent))
-                        return 1;
-        }
-        return 0;
-}
-static int convert_fxsr_from_user(struct user_fxsr_struct *fxsave,
-                                  struct _fpstate __user *buf)
-{
-        unsigned long env[7];
-        struct _fpxreg *to;
-        struct _fpreg __user *from;
-        int i;
-        if (copy_from_user( env, buf, 7 * sizeof(long)))
-                return 1;
-        fxsave->cwd = (unsigned short)(env[0] & 0xffff);
-        fxsave->swd = (unsigned short)(env[1] & 0xffff);
-        fxsave->twd = twd_i387_to_fxsr((unsigned short)(env[2] & 0xffff));
-        fxsave->fip = env[3];
-        fxsave->fop = (unsigned short)((env[4] & 0xffff0000ul) >> 16);
-        fxsave->fcs = (env[4] & 0xffff);
-        fxsave->foo = env[5];
-        fxsave->fos = env[6];
-        to = (struct _fpxreg *) &fxsave->st_space[0];
-        from = &buf->_st[0];
-        for (i = 0; i < 8; i++, to++, from++) {
-                unsigned long *t = (unsigned long *)to;
-                unsigned long __user *f = (unsigned long __user *)from;
-                if (__get_user(*t, f) ||
-                    __get_user(*(t + 1), f + 1) ||
-                    __get_user(to->exponent, &from->exponent))
-                        return 1;
-        }
-        return 0;
-}
-extern int have_fpx_regs;
-static int copy_sc_from_user(struct pt_regs *regs,
-                             struct sigcontext __user *from)
-{
-        struct sigcontext sc;
-        int err, pid;
-        err = copy_from_user(&sc, from, sizeof(sc));
-        if (err)
-                return err;
-        pid = userspace_pid[current_thread_info()->cpu];
-        copy_sc(&regs->regs, &sc);
-        if (have_fpx_regs) {
-                struct user_fxsr_struct fpx;
-                err = copy_from_user(&fpx,
-                        &((struct _fpstate __user *)sc.fpstate)->_fxsr_env[0],
-                                     sizeof(struct user_fxsr_struct));
-                if (err)
-                        return 1;
-                err = convert_fxsr_from_user(&fpx, sc.fpstate);
-                if (err)
-                        return 1;
-                err = restore_fpx_registers(pid, (unsigned long *) &fpx);
-                if (err < 0) {
-                        printk(KERN_ERR "copy_sc_from_user - "
-                               "restore_fpx_registers failed, errno = %d\n",
-                               -err);
-                        return 1;
-                }
-        }
-        else {
-                struct user_i387_struct fp;
-                err = copy_from_user(&fp, sc.fpstate,
-                                     sizeof(struct user_i387_struct));
-                if (err)
-                        return 1;
-                err = restore_fp_registers(pid, (unsigned long *) &fp);
-                if (err < 0) {
-                        printk(KERN_ERR "copy_sc_from_user - "
-                               "restore_fp_registers failed, errno = %d\n",
-                               -err);
-                        return 1;
-                }
-        }
-        return 0;
-}
-static int copy_sc_to_user(struct sigcontext __user *to,
-                           struct _fpstate __user *to_fp, struct pt_regs *regs,
-                           unsigned long sp)
-{
-        struct sigcontext sc;
-        struct faultinfo * fi = &current->thread.arch.faultinfo;
-        int err, pid;
-        sc.gs = REGS_GS(regs->regs.gp);
-        sc.fs = REGS_FS(regs->regs.gp);
-        sc.es = REGS_ES(regs->regs.gp);
-        sc.ds = REGS_DS(regs->regs.gp);
-        sc.di = REGS_EDI(regs->regs.gp);
-        sc.si = REGS_ESI(regs->regs.gp);
-        sc.bp = REGS_EBP(regs->regs.gp);
-        sc.sp = sp;
-        sc.bx = REGS_EBX(regs->regs.gp);
-        sc.dx = REGS_EDX(regs->regs.gp);
-        sc.cx = REGS_ECX(regs->regs.gp);
-        sc.ax = REGS_EAX(regs->regs.gp);
-        sc.ip = REGS_IP(regs->regs.gp);
-        sc.cs = REGS_CS(regs->regs.gp);
-        sc.flags = REGS_EFLAGS(regs->regs.gp);
-        sc.sp_at_signal = regs->regs.gp[UESP];
-        sc.ss = regs->regs.gp[SS];
-        sc.cr2 = fi->cr2;
-        sc.err = fi->error_code;
-        sc.trapno = fi->trap_no;
-        to_fp = (to_fp ? to_fp : (struct _fpstate __user *) (to + 1));
-        sc.fpstate = to_fp;
-        pid = userspace_pid[current_thread_info()->cpu];
-        if (have_fpx_regs) {
-                struct user_fxsr_struct fpx;
-                err = save_fpx_registers(pid, (unsigned long *) &fpx);
-                if (err < 0){
-                        printk(KERN_ERR "copy_sc_to_user - save_fpx_registers "
-                               "failed, errno = %d\n", err);
-                        return 1;
-                }
-                err = convert_fxsr_to_user(to_fp, &fpx);
-                if (err)
-                        return 1;
-                err |= __put_user(fpx.swd, &to_fp->status);
-                err |= __put_user(X86_FXSR_MAGIC, &to_fp->magic);
-                if (err)
-                        return 1;
-                if (copy_to_user(&to_fp->_fxsr_env[0], &fpx,
-                                 sizeof(struct user_fxsr_struct)))
-                        return 1;
-        }
-        else {
-                struct user_i387_struct fp;
-                err = save_fp_registers(pid, (unsigned long *) &fp);
-                if (copy_to_user(to_fp, &fp, sizeof(struct user_i387_struct)))
-                        return 1;
-        }
-        return copy_to_user(to, &sc, sizeof(sc));
-}
-static int copy_ucontext_to_user(struct ucontext __user *uc,
-                                 struct _fpstate __user *fp, sigset_t *set,
-                                 unsigned long sp)
-{
-        int err = 0;
-        err |= put_user(current->sas_ss_sp, &uc->uc_stack.ss_sp);
-        err |= put_user(sas_ss_flags(sp), &uc->uc_stack.ss_flags);
-        err |= put_user(current->sas_ss_size, &uc->uc_stack.ss_size);
-        err |= copy_sc_to_user(&uc->uc_mcontext, fp, &current->thread.regs, sp);
-        err |= copy_to_user(&uc->uc_sigmask, set, sizeof(*set));
-        return err;
-}
-struct sigframe
-{
-        char __user *pretcode;
-        int sig;
-        struct sigcontext sc;
-        struct _fpstate fpstate;
-        unsigned long extramask[_NSIG_WORDS-1];
-        char retcode[8];
-};
-struct rt_sigframe
-{
-        char __user *pretcode;
-        int sig;
-        struct siginfo __user *pinfo;
-        void __user *puc;
-        struct siginfo info;
-        struct ucontext uc;
-        struct _fpstate fpstate;
-        char retcode[8];
-};
-int setup_signal_stack_sc(unsigned long stack_top, int sig,
-                          struct k_sigaction *ka, struct pt_regs *regs,
-                          sigset_t *mask)
-{
-        struct sigframe __user *frame;
-        void __user *restorer;
-        unsigned long save_sp = PT_REGS_SP(regs);
-        int err = 0;
-        /* This is the same calculation as i386 - ((sp + 4) & 15) == 0 */
-        stack_top = ((stack_top + 4) & -16UL) - 4;
-        frame = (struct sigframe __user *) stack_top - 1;
-        if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame)))
-                return 1;
-        restorer = frame->retcode;
-        if (ka->sa.sa_flags & SA_RESTORER)
-                restorer = ka->sa.sa_restorer;
-        /* Update SP now because the page fault handler refuses to extend
-         * the stack if the faulting address is too far below the current
-         * SP, which frame now certainly is.  If there's an error, the original
-         * value is restored on the way out.
-         * When writing the sigcontext to the stack, we have to write the
-         * original value, so that's passed to copy_sc_to_user, which does
-         * the right thing with it.
-         */
-        PT_REGS_SP(regs) = (unsigned long) frame;
-        err |= __put_user(restorer, &frame->pretcode);
-        err |= __put_user(sig, &frame->sig);
-        err |= copy_sc_to_user(&frame->sc, NULL, regs, save_sp);
-        err |= __put_user(mask->sig[0], &frame->sc.oldmask);
-        if (_NSIG_WORDS > 1)
-                err |= __copy_to_user(&frame->extramask, &mask->sig[1],
-                                      sizeof(frame->extramask));
-        /*
-         * This is popl %eax ; movl $,%eax ; int $0x80
-         *
-         * WE DO NOT USE IT ANY MORE! It's only left here for historical
-         * reasons and because gdb uses it as a signature to notice
-         * signal handler stack frames.
-         */
-        err |= __put_user(0xb858, (short __user *)(frame->retcode+0));
-        err |= __put_user(__NR_sigreturn, (int __user *)(frame->retcode+2));
-        err |= __put_user(0x80cd, (short __user *)(frame->retcode+6));
-        if (err)
-                goto err;
-        PT_REGS_SP(regs) = (unsigned long) frame;
-        PT_REGS_IP(regs) = (unsigned long) ka->sa.sa_handler;
-        PT_REGS_EAX(regs) = (unsigned long) sig;
-        PT_REGS_EDX(regs) = (unsigned long) 0;
-        PT_REGS_ECX(regs) = (unsigned long) 0;
-        if ((current->ptrace & PT_DTRACE) && (current->ptrace & PT_PTRACED))
-                ptrace_notify(SIGTRAP);
-        return 0;
-err:
-        PT_REGS_SP(regs) = save_sp;
-        return err;
-}
-int setup_signal_stack_si(unsigned long stack_top, int sig,
-                          struct k_sigaction *ka, struct pt_regs *regs,
-                          siginfo_t *info, sigset_t *mask)
-{
-        struct rt_sigframe __user *frame;
-        void __user *restorer;
-        unsigned long save_sp = PT_REGS_SP(regs);
-        int err = 0;
-        stack_top &= -8UL;
-        frame = (struct rt_sigframe __user *) stack_top - 1;
-        if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame)))
-                return 1;
-        restorer = frame->retcode;
-        if (ka->sa.sa_flags & SA_RESTORER)
-                restorer = ka->sa.sa_restorer;
-        /* See comment above about why this is here */
-        PT_REGS_SP(regs) = (unsigned long) frame;
-        err |= __put_user(restorer, &frame->pretcode);
-        err |= __put_user(sig, &frame->sig);
-        err |= __put_user(&frame->info, &frame->pinfo);
-        err |= __put_user(&frame->uc, &frame->puc);
-        err |= copy_siginfo_to_user(&frame->info, info);
-        err |= copy_ucontext_to_user(&frame->uc, &frame->fpstate, mask,
-                                     save_sp);
-        /*
-         * This is movl $,%eax ; int $0x80
-         *
-         * WE DO NOT USE IT ANY MORE! It's only left here for historical
-         * reasons and because gdb uses it as a signature to notice
-         * signal handler stack frames.
-         */
-        err |= __put_user(0xb8, (char __user *)(frame->retcode+0));
-        err |= __put_user(__NR_rt_sigreturn, (int __user *)(frame->retcode+1));
-        err |= __put_user(0x80cd, (short __user *)(frame->retcode+5));
-        if (err)
-                goto err;
-        PT_REGS_IP(regs) = (unsigned long) ka->sa.sa_handler;
-        PT_REGS_EAX(regs) = (unsigned long) sig;
-        PT_REGS_EDX(regs) = (unsigned long) &frame->info;
-        PT_REGS_ECX(regs) = (unsigned long) &frame->uc;
-        if ((current->ptrace & PT_DTRACE) && (current->ptrace & PT_PTRACED))
-                ptrace_notify(SIGTRAP);
-        return 0;
-err:
-        PT_REGS_SP(regs) = save_sp;
-        return err;
-}
-long sys_sigreturn(struct pt_regs regs)
-{
-        unsigned long sp = PT_REGS_SP(&current->thread.regs);
-        struct sigframe __user *frame = (struct sigframe __user *)(sp - 8);
-        sigset_t set;
-        struct sigcontext __user *sc = &frame->sc;
-        unsigned long __user *oldmask = &sc->oldmask;
-        unsigned long __user *extramask = frame->extramask;
-        int sig_size = (_NSIG_WORDS - 1) * sizeof(unsigned long);
-        if (copy_from_user(&set.sig[0], oldmask, sizeof(set.sig[0])) ||
-            copy_from_user(&set.sig[1], extramask, sig_size))
-                goto segfault;
-        sigdelsetmask(&set, ~_BLOCKABLE);
-        spin_lock_irq(&current->sighand->siglock);
-        current->blocked = set;
-        recalc_sigpending();
-        spin_unlock_irq(&current->sighand->siglock);
-        if (copy_sc_from_user(&current->thread.regs, sc))
-                goto segfault;
-        /* Avoid ERESTART handling */
-        PT_REGS_SYSCALL_NR(&current->thread.regs) = -1;
-        return PT_REGS_SYSCALL_RET(&current->thread.regs);
- segfault:
-        force_sig(SIGSEGV, current);
-        return 0;
-}
-long sys_rt_sigreturn(struct pt_regs regs)
-{
-        unsigned long sp = PT_REGS_SP(&current->thread.regs);
-        struct rt_sigframe __user *frame =
-                (struct rt_sigframe __user *) (sp - 4);
-        sigset_t set;
-        struct ucontext __user *uc = &frame->uc;
-        int sig_size = _NSIG_WORDS * sizeof(unsigned long);
-        if (copy_from_user(&set, &uc->uc_sigmask, sig_size))
-                goto segfault;
-        sigdelsetmask(&set, ~_BLOCKABLE);
-        spin_lock_irq(&current->sighand->siglock);
-        current->blocked = set;
-        recalc_sigpending();
-        spin_unlock_irq(&current->sighand->siglock);
-        if (copy_sc_from_user(&current->thread.regs, &uc->uc_mcontext))
-                goto segfault;
-        /* Avoid ERESTART handling */
-        PT_REGS_SYSCALL_NR(&current->thread.regs) = -1;
-        return PT_REGS_SYSCALL_RET(&current->thread.regs);
- segfault:
-        force_sig(SIGSEGV, current);
-        return 0;
-}
diff --git a/arch/um/sys-i386/stub.S b/arch/um/sys-i386/stub.S
deleted file mode 100644
index 54a36ec20cb7..000000000000
--- a/arch/um/sys-i386/stub.S
+++ /dev/null
@@ -1,51 +0,0 @@
-#include "as-layout.h"
-        .globl syscall_stub
-.section .__syscall_stub, "ax"
-        .globl batch_syscall_stub
-batch_syscall_stub:
-        /* load pointer to first operation */
-        mov     $(STUB_DATA+8), %esp
-again:
-        /* load length of additional data */
-        mov     0x0(%esp), %eax
-        /* if(length == 0) : end of list */
-        /* write possible 0 to header */
-        mov     %eax, STUB_DATA+4
-        cmpl    $0, %eax
-        jz      done
-        /* save current pointer */
-        mov     %esp, STUB_DATA+4
-        /* skip additional data */
-        add     %eax, %esp
-        /* load syscall-# */
-        pop     %eax
-        /* load syscall params */
-        pop     %ebx
-        pop     %ecx
-        pop     %edx
-        pop     %esi
-        pop     %edi
-        pop     %ebp
-        /* execute syscall */
-        int     $0x80
-        /* check return value */
-        pop     %ebx
-        cmp     %ebx, %eax
-        je      again
-done:
-        /* save return value */
-        mov     %eax, STUB_DATA
-        /* stop */
-        int3
diff --git a/arch/um/sys-i386/stub_segv.c b/arch/um/sys-i386/stub_segv.c
deleted file mode 100644
index 28ccf737a79f..000000000000
--- a/arch/um/sys-i386/stub_segv.c
+++ /dev/null
@@ -1,17 +0,0 @@
-/*
- * Copyright (C) 2004 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
- * Licensed under the GPL
- */
-#include "sysdep/stub.h"
-#include "sysdep/sigcontext.h"
-void __attribute__ ((__section__ (".__syscall_stub")))
-stub_segv_handler(int sig)
-{
-        struct sigcontext *sc = (struct sigcontext *) (&sig + 1);
-        GET_FAULTINFO_FROM_SC(*((struct faultinfo *) STUB_DATA), sc);
-        trap_myself();
-}
diff --git a/arch/um/sys-i386/sys_call_table.S b/arch/um/sys-i386/sys_call_table.S
deleted file mode 100644
index de274071455d..000000000000
--- a/arch/um/sys-i386/sys_call_table.S
+++ /dev/null
@@ -1,28 +0,0 @@
-#include <linux/linkage.h>
-/* Steal i386 syscall table for our purposes, but with some slight changes.*/
-#define sys_iopl sys_ni_syscall
-#define sys_ioperm sys_ni_syscall
-#define sys_vm86old sys_ni_syscall
-#define sys_vm86 sys_ni_syscall
-#define old_mmap sys_old_mmap
-#define ptregs_fork sys_fork
-#define ptregs_execve sys_execve
-#define ptregs_iopl sys_iopl
-#define ptregs_vm86old sys_vm86old
-#define ptregs_sigreturn sys_sigreturn
-#define ptregs_clone sys_clone
-#define ptregs_vm86 sys_vm86
-#define ptregs_rt_sigreturn sys_rt_sigreturn
-#define ptregs_sigaltstack sys_sigaltstack
-#define ptregs_vfork sys_vfork
-.section .rodata,"a"
-#include "../../x86/kernel/syscall_table_32.S"
-ENTRY(syscall_table_size)
-.long .-sys_call_table
diff --git a/arch/um/sys-i386/syscalls.c b/arch/um/sys-i386/syscalls.c
deleted file mode 100644
index 70ca357393b8..000000000000
--- a/arch/um/sys-i386/syscalls.c
+++ /dev/null
@@ -1,66 +0,0 @@
-/* 
- * Copyright (C) 2000 - 2003 Jeff Dike (jdike@addtoit.com)
- * Licensed under the GPL
- */
-#include "linux/sched.h"
-#include "linux/shm.h"
-#include "linux/ipc.h"
-#include "linux/syscalls.h"
-#include "asm/mman.h"
-#include "asm/uaccess.h"
-#include "asm/unistd.h"
-/*
- * The prototype on i386 is:
- *
- *     int clone(int flags, void * child_stack, int * parent_tidptr, struct user_desc * newtls, int * child_tidptr)
- *
- * and the "newtls" arg. on i386 is read by copy_thread directly from the
- * register saved on the stack.
- */
-long sys_clone(unsigned long clone_flags, unsigned long newsp,
-               int __user *parent_tid, void *newtls, int __user *child_tid)
-{
-        long ret;
-        if (!newsp)
-                newsp = UPT_SP(&current->thread.regs.regs);
-        current->thread.forking = 1;
-        ret = do_fork(clone_flags, newsp, &current->thread.regs, 0, parent_tid,
-                      child_tid);
-        current->thread.forking = 0;
-        return ret;
-}
-long sys_sigaction(int sig, const struct old_sigaction __user *act,
-                         struct old_sigaction __user *oact)
-{
-        struct k_sigaction new_ka, old_ka;
-        int ret;
-        if (act) {
-                old_sigset_t mask;
-                if (!access_ok(VERIFY_READ, act, sizeof(*act)) ||
-                    __get_user(new_ka.sa.sa_handler, &act->sa_handler) ||
-                    __get_user(new_ka.sa.sa_restorer, &act->sa_restorer))
-                        return -EFAULT;
-                __get_user(new_ka.sa.sa_flags, &act->sa_flags);
-                __get_user(mask, &act->sa_mask);
-                siginitset(&new_ka.sa.sa_mask, mask);
-        }
-        ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
-        if (!ret && oact) {
-                if (!access_ok(VERIFY_WRITE, oact, sizeof(*oact)) ||
-                    __put_user(old_ka.sa.sa_handler, &oact->sa_handler) ||
-                    __put_user(old_ka.sa.sa_restorer, &oact->sa_restorer))
-                        return -EFAULT;
-                __put_user(old_ka.sa.sa_flags, &oact->sa_flags);
-                __put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask);
-        }
-        return ret;
-}
diff --git a/arch/um/sys-i386/sysrq.c b/arch/um/sys-i386/sysrq.c
deleted file mode 100644
index 171b3e9dc867..000000000000
--- a/arch/um/sys-i386/sysrq.c
+++ /dev/null
@@ -1,101 +0,0 @@
-/*
- * Copyright (C) 2001 - 2003 Jeff Dike (jdike@addtoit.com)
- * Licensed under the GPL
- */
-#include "linux/kernel.h"
-#include "linux/smp.h"
-#include "linux/sched.h"
-#include "linux/kallsyms.h"
-#include "asm/ptrace.h"
-#include "sysrq.h"
-/* This is declared by <linux/sched.h> */
-void show_regs(struct pt_regs *regs)
-{
-        printk("\n");
-        printk("EIP: %04lx:[<%08lx>] CPU: %d %s", 
-               0xffff & PT_REGS_CS(regs), PT_REGS_IP(regs),
-               smp_processor_id(), print_tainted());
-        if (PT_REGS_CS(regs) & 3)
-                printk(" ESP: %04lx:%08lx", 0xffff & PT_REGS_SS(regs),
-                       PT_REGS_SP(regs));
-        printk(" EFLAGS: %08lx\n    %s\n", PT_REGS_EFLAGS(regs),
-               print_tainted());
-        printk("EAX: %08lx EBX: %08lx ECX: %08lx EDX: %08lx\n",
-                PT_REGS_EAX(regs), PT_REGS_EBX(regs), 
-               PT_REGS_ECX(regs), 
-               PT_REGS_EDX(regs));
-        printk("ESI: %08lx EDI: %08lx EBP: %08lx",
-               PT_REGS_ESI(regs), PT_REGS_EDI(regs), 
-               PT_REGS_EBP(regs));
-        printk(" DS: %04lx ES: %04lx\n",
-               0xffff & PT_REGS_DS(regs), 
-               0xffff & PT_REGS_ES(regs));
-        show_trace(NULL, (unsigned long *) &regs);
-}
-/* Copied from i386. */
-static inline int valid_stack_ptr(struct thread_info *tinfo, void *p)
-{
-        return  p > (void *)tinfo &&
-                p < (void *)tinfo + THREAD_SIZE - 3;
-}
-/* Adapted from i386 (we also print the address we read from). */
-static inline unsigned long print_context_stack(struct thread_info *tinfo,
-                                unsigned long *stack, unsigned long ebp)
-{
-        unsigned long addr;
-#ifdef CONFIG_FRAME_POINTER
-        while (valid_stack_ptr(tinfo, (void *)ebp)) {
-                addr = *(unsigned long *)(ebp + 4);
-                printk("%08lx:  [<%08lx>]", ebp + 4, addr);
-                print_symbol(" %s", addr);
-                printk("\n");
-                ebp = *(unsigned long *)ebp;
-        }
-#else
-        while (valid_stack_ptr(tinfo, stack)) {
-                addr = *stack;
-                if (__kernel_text_address(addr)) {
-                        printk("%08lx:  [<%08lx>]", (unsigned long) stack, addr);
-                        print_symbol(" %s", addr);
-                        printk("\n");
-                }
-                stack++;
-        }
-#endif
-        return ebp;
-}
-void show_trace(struct task_struct* task, unsigned long * stack)
-{
-        unsigned long ebp;
-        struct thread_info *context;
-        /* Turn this into BUG_ON if possible. */
-        if (!stack) {
-                stack = (unsigned long*) &stack;
-                printk("show_trace: got NULL stack, implicit assumption task == current");
-                WARN_ON(1);
-        }
-        if (!task)
-                task = current;
-        if (task != current) {
-                ebp = (unsigned long) KSTK_EBP(task);
-        } else {
-                asm ("movl %%ebp, %0" : "=r" (ebp) : );
-        }
-        context = (struct thread_info *)
-                ((unsigned long)stack & (~(THREAD_SIZE - 1)));
-        print_context_stack(context, stack, ebp);
-        printk("\n");
-}
diff --git a/arch/um/sys-i386/tls.c b/arch/um/sys-i386/tls.c
deleted file mode 100644
index c6c7131e563b..000000000000
--- a/arch/um/sys-i386/tls.c
+++ /dev/null
@@ -1,396 +0,0 @@
-/*
- * Copyright (C) 2005 Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
- * Licensed under the GPL
- */
-#include "linux/percpu.h"
-#include "linux/sched.h"
-#include "asm/uaccess.h"
-#include "os.h"
-#include "skas.h"
-#include "sysdep/tls.h"
-/*
- * If needed we can detect when it's uninitialized.
- *
- * These are initialized in an initcall and unchanged thereafter.
- */
-static int host_supports_tls = -1;
-int host_gdt_entry_tls_min;
-int do_set_thread_area(struct user_desc *info)
-{
-        int ret;
-        u32 cpu;
-        cpu = get_cpu();
-        ret = os_set_thread_area(info, userspace_pid[cpu]);
-        put_cpu();
-        if (ret)
-                printk(KERN_ERR "PTRACE_SET_THREAD_AREA failed, err = %d, "
-                       "index = %d\n", ret, info->entry_number);
-        return ret;
-}
-int do_get_thread_area(struct user_desc *info)
-{
-        int ret;
-        u32 cpu;
-        cpu = get_cpu();
-        ret = os_get_thread_area(info, userspace_pid[cpu]);
-        put_cpu();
-        if (ret)
-                printk(KERN_ERR "PTRACE_GET_THREAD_AREA failed, err = %d, "
-                       "index = %d\n", ret, info->entry_number);
-        return ret;
-}
-/*
- * sys_get_thread_area: get a yet unused TLS descriptor index.
- * XXX: Consider leaving one free slot for glibc usage at first place. This must
- * be done here (and by changing GDT_ENTRY_TLS_* macros) and nowhere else.
- *
- * Also, this must be tested when compiling in SKAS mode with dynamic linking
- * and running against NPTL.
- */
-static int get_free_idx(struct task_struct* task)
-{
-        struct thread_struct *t = &task->thread;
-        int idx;
-        if (!t->arch.tls_array)
-                return GDT_ENTRY_TLS_MIN;
-        for (idx = 0; idx < GDT_ENTRY_TLS_ENTRIES; idx++)
-                if (!t->arch.tls_array[idx].present)
-                        return idx + GDT_ENTRY_TLS_MIN;
-        return -ESRCH;
-}
-static inline void clear_user_desc(struct user_desc* info)
-{
-        /* Postcondition: LDT_empty(info) returns true. */
-        memset(info, 0, sizeof(*info));
-        /*
-         * Check the LDT_empty or the i386 sys_get_thread_area code - we obtain
-         * indeed an empty user_desc.
-         */
-        info->read_exec_only = 1;
-        info->seg_not_present = 1;
-}
-#define O_FORCE 1
-static int load_TLS(int flags, struct task_struct *to)
-{
-        int ret = 0;
-        int idx;
-        for (idx = GDT_ENTRY_TLS_MIN; idx < GDT_ENTRY_TLS_MAX; idx++) {
-                struct uml_tls_struct* curr =
-                        &to->thread.arch.tls_array[idx - GDT_ENTRY_TLS_MIN];
-                /*
-                 * Actually, now if it wasn't flushed it gets cleared and
-                 * flushed to the host, which will clear it.
-                 */
-                if (!curr->present) {
-                        if (!curr->flushed) {
-                                clear_user_desc(&curr->tls);
-                                curr->tls.entry_number = idx;
-                        } else {
-                                WARN_ON(!LDT_empty(&curr->tls));
-                                continue;
-                        }
-                }
-                if (!(flags & O_FORCE) && curr->flushed)
-                        continue;
-                ret = do_set_thread_area(&curr->tls);
-                if (ret)
-                        goto out;
-                curr->flushed = 1;
-        }
-out:
-        return ret;
-}
-/*
- * Verify if we need to do a flush for the new process, i.e. if there are any
- * present desc's, only if they haven't been flushed.
- */
-static inline int needs_TLS_update(struct task_struct *task)
-{
-        int i;
-        int ret = 0;
-        for (i = GDT_ENTRY_TLS_MIN; i < GDT_ENTRY_TLS_MAX; i++) {
-                struct uml_tls_struct* curr =
-                        &task->thread.arch.tls_array[i - GDT_ENTRY_TLS_MIN];
-                /*
-                 * Can't test curr->present, we may need to clear a descriptor
-                 * which had a value.
-                 */
-                if (curr->flushed)
-                        continue;
-                ret = 1;
-                break;
-        }
-        return ret;
-}
-/*
- * On a newly forked process, the TLS descriptors haven't yet been flushed. So
- * we mark them as such and the first switch_to will do the job.
- */
-void clear_flushed_tls(struct task_struct *task)
-{
-        int i;
-        for (i = GDT_ENTRY_TLS_MIN; i < GDT_ENTRY_TLS_MAX; i++) {
-                struct uml_tls_struct* curr =
-                        &task->thread.arch.tls_array[i - GDT_ENTRY_TLS_MIN];
-                /*
-                 * Still correct to do this, if it wasn't present on the host it
-                 * will remain as flushed as it was.
-                 */
-                if (!curr->present)
-                        continue;
-                curr->flushed = 0;
-        }
-}
-/*
- * In SKAS0 mode, currently, multiple guest threads sharing the same ->mm have a
- * common host process. So this is needed in SKAS0 too.
- *
- * However, if each thread had a different host process (and this was discussed
- * for SMP support) this won't be needed.
- *
- * And this will not need be used when (and if) we'll add support to the host
- * SKAS patch.
- */
-int arch_switch_tls(struct task_struct *to)
-{
-        if (!host_supports_tls)
-                return 0;
-        /*
-         * We have no need whatsoever to switch TLS for kernel threads; beyond
-         * that, that would also result in us calling os_set_thread_area with
-         * userspace_pid[cpu] == 0, which gives an error.
-         */
-        if (likely(to->mm))
-                return load_TLS(O_FORCE, to);
-        return 0;
-}
-static int set_tls_entry(struct task_struct* task, struct user_desc *info,
-                         int idx, int flushed)
-{
-        struct thread_struct *t = &task->thread;
-        if (idx < GDT_ENTRY_TLS_MIN || idx > GDT_ENTRY_TLS_MAX)
-                return -EINVAL;
-        t->arch.tls_array[idx - GDT_ENTRY_TLS_MIN].tls = *info;
-        t->arch.tls_array[idx - GDT_ENTRY_TLS_MIN].present = 1;
-        t->arch.tls_array[idx - GDT_ENTRY_TLS_MIN].flushed = flushed;
-        return 0;
-}
-int arch_copy_tls(struct task_struct *new)
-{
-        struct user_desc info;
-        int idx, ret = -EFAULT;
-        if (copy_from_user(&info,
-                           (void __user *) UPT_ESI(&new->thread.regs.regs),
-                           sizeof(info)))
-                goto out;
-        ret = -EINVAL;
-        if (LDT_empty(&info))
-                goto out;
-        idx = info.entry_number;
-        ret = set_tls_entry(new, &info, idx, 0);
-out:
-        return ret;
-}
-/* XXX: use do_get_thread_area to read the host value? I'm not at all sure! */
-static int get_tls_entry(struct task_struct *task, struct user_desc *info,
-                         int idx)
-{
-        struct thread_struct *t = &task->thread;
-        if (!t->arch.tls_array)
-                goto clear;
-        if (idx < GDT_ENTRY_TLS_MIN || idx > GDT_ENTRY_TLS_MAX)
-                return -EINVAL;
-        if (!t->arch.tls_array[idx - GDT_ENTRY_TLS_MIN].present)
-                goto clear;
-        *info = t->arch.tls_array[idx - GDT_ENTRY_TLS_MIN].tls;
-out:
-        /*
-         * Temporary debugging check, to make sure that things have been
-         * flushed. This could be triggered if load_TLS() failed.
-         */
-        if (unlikely(task == current &&
-                     !t->arch.tls_array[idx - GDT_ENTRY_TLS_MIN].flushed)) {
-                printk(KERN_ERR "get_tls_entry: task with pid %d got here "
-                                "without flushed TLS.", current->pid);
-        }
-        return 0;
-clear:
-        /*
-         * When the TLS entry has not been set, the values read to user in the
-         * tls_array are 0 (because it's cleared at boot, see
-         * arch/i386/kernel/head.S:cpu_gdt_table). Emulate that.
-         */
-        clear_user_desc(info);
-        info->entry_number = idx;
-        goto out;
-}
-int sys_set_thread_area(struct user_desc __user *user_desc)
-{
-        struct user_desc info;
-        int idx, ret;
-        if (!host_supports_tls)
-                return -ENOSYS;
-        if (copy_from_user(&info, user_desc, sizeof(info)))
-                return -EFAULT;
-        idx = info.entry_number;
-        if (idx == -1) {
-                idx = get_free_idx(current);
-                if (idx < 0)
-                        return idx;
-                info.entry_number = idx;
-                /* Tell the user which slot we chose for him.*/
-                if (put_user(idx, &user_desc->entry_number))
-                        return -EFAULT;
-        }
-        ret = do_set_thread_area(&info);
-        if (ret)
-                return ret;
-        return set_tls_entry(current, &info, idx, 1);
-}
-/*
- * Perform set_thread_area on behalf of the traced child.
- * Note: error handling is not done on the deferred load, and this differ from
- * i386. However the only possible error are caused by bugs.
- */
-int ptrace_set_thread_area(struct task_struct *child, int idx,
-                           struct user_desc __user *user_desc)
-{
-        struct user_desc info;
-        if (!host_supports_tls)
-                return -EIO;
-        if (copy_from_user(&info, user_desc, sizeof(info)))
-                return -EFAULT;
-        return set_tls_entry(child, &info, idx, 0);
-}
-int sys_get_thread_area(struct user_desc __user *user_desc)
-{
-        struct user_desc info;
-        int idx, ret;
-        if (!host_supports_tls)
-                return -ENOSYS;
-        if (get_user(idx, &user_desc->entry_number))
-                return -EFAULT;
-        ret = get_tls_entry(current, &info, idx);
-        if (ret < 0)
-                goto out;
-        if (copy_to_user(user_desc, &info, sizeof(info)))
-                ret = -EFAULT;
-out:
-        return ret;
-}
-/*
- * Perform get_thread_area on behalf of the traced child.
- */
-int ptrace_get_thread_area(struct task_struct *child, int idx,
-                struct user_desc __user *user_desc)
-{
-        struct user_desc info;
-        int ret;
-        if (!host_supports_tls)
-                return -EIO;
-        ret = get_tls_entry(child, &info, idx);
-        if (ret < 0)
-                goto out;
-        if (copy_to_user(user_desc, &info, sizeof(info)))
-                ret = -EFAULT;
-out:
-        return ret;
-}
-/*
- * This code is really i386-only, but it detects and logs x86_64 GDT indexes
- * if a 32-bit UML is running on a 64-bit host.
- */
-static int __init __setup_host_supports_tls(void)
-{
-        check_host_supports_tls(&host_supports_tls, &host_gdt_entry_tls_min);
-        if (host_supports_tls) {
-                printk(KERN_INFO "Host TLS support detected\n");
-                printk(KERN_INFO "Detected host type: ");
-                switch (host_gdt_entry_tls_min) {
-                case GDT_ENTRY_TLS_MIN_I386:
-                        printk(KERN_CONT "i386");
-                        break;
-                case GDT_ENTRY_TLS_MIN_X86_64:
-                        printk(KERN_CONT "x86_64");
-                        break;
-                }
-                printk(KERN_CONT " (GDT indexes %d to %d)\n",
-                       host_gdt_entry_tls_min,
-                       host_gdt_entry_tls_min + GDT_ENTRY_TLS_ENTRIES);
-        } else
-                printk(KERN_ERR "  Host TLS support NOT detected! "
-                                "TLS support inside UML will not work\n");
-        return 0;
-}
-__initcall(__setup_host_supports_tls);
diff --git a/arch/um/sys-i386/user-offsets.c b/arch/um/sys-i386/user-offsets.c
deleted file mode 100644
index 5f883bfe773f..000000000000
--- a/arch/um/sys-i386/user-offsets.c
+++ /dev/null
@@ -1,53 +0,0 @@
-#include <stdio.h>
-#include <stddef.h>
-#include <signal.h>
-#include <sys/poll.h>
-#include <sys/user.h>
-#include <sys/mman.h>
-#include <asm/ptrace.h>
-#define DEFINE(sym, val) \
-        asm volatile("\n->" #sym " %0 " #val : : "i" (val))
-#define DEFINE_LONGS(sym, val) \
-        asm volatile("\n->" #sym " %0 " #val : : "i" (val/sizeof(unsigned long)))
-#define OFFSET(sym, str, mem) \
-        DEFINE(sym, offsetof(struct str, mem));
-void foo(void)
-{
-        OFFSET(HOST_SC_TRAPNO, sigcontext, trapno);
-        OFFSET(HOST_SC_ERR, sigcontext, err);
-        OFFSET(HOST_SC_CR2, sigcontext, cr2);
-        DEFINE_LONGS(HOST_FP_SIZE, sizeof(struct user_fpregs_struct));
-        DEFINE_LONGS(HOST_FPX_SIZE, sizeof(struct user_fpxregs_struct));
-        DEFINE(HOST_IP, EIP);
-        DEFINE(HOST_SP, UESP);
-        DEFINE(HOST_EFLAGS, EFL);
-        DEFINE(HOST_EAX, EAX);
-        DEFINE(HOST_EBX, EBX);
-        DEFINE(HOST_ECX, ECX);
-        DEFINE(HOST_EDX, EDX);
-        DEFINE(HOST_ESI, ESI);
-        DEFINE(HOST_EDI, EDI);
-        DEFINE(HOST_EBP, EBP);
-        DEFINE(HOST_CS, CS);
-        DEFINE(HOST_SS, SS);
-        DEFINE(HOST_DS, DS);
-        DEFINE(HOST_FS, FS);
-        DEFINE(HOST_ES, ES);
-        DEFINE(HOST_GS, GS);
-        DEFINE(UM_FRAME_SIZE, sizeof(struct user_regs_struct));
-        /* XXX Duplicated between i386 and x86_64 */
-        DEFINE(UM_POLLIN, POLLIN);
-        DEFINE(UM_POLLPRI, POLLPRI);
-        DEFINE(UM_POLLOUT, POLLOUT);
-        DEFINE(UM_PROT_READ, PROT_READ);
-        DEFINE(UM_PROT_WRITE, PROT_WRITE);
-        DEFINE(UM_PROT_EXEC, PROT_EXEC);
-}
diff --git a/arch/um/sys-x86_64/Makefile b/arch/um/sys-x86_64/Makefile
deleted file mode 100644
index bd4d1d3ba919..000000000000
--- a/arch/um/sys-x86_64/Makefile
+++ /dev/null
@@ -1,27 +0,0 @@
-#
-# Copyright 2003 PathScale, Inc.
-#
-# Licensed under the GPL
-#
-obj-y = bug.o bugs.o delay.o fault.o ldt.o ptrace.o ptrace_user.o mem.o \
-        setjmp.o signal.o stub.o stub_segv.o syscalls.o syscall_table.o \
-        sysrq.o ksyms.o tls.o
-obj-y += vdso/
-subarch-obj-y = lib/csum-partial_64.o lib/memcpy_64.o lib/thunk_64.o \
-                lib/rwsem.o
-subarch-obj-$(CONFIG_MODULES) += kernel/module.o
-ldt-y = ../sys-i386/ldt.o
-USER_OBJS := ptrace_user.o
-USER_OBJS += user-offsets.s
-extra-y += user-offsets.s
-UNPROFILE_OBJS := stub_segv.o
-CFLAGS_stub_segv.o := $(CFLAGS_NO_HARDENING)
-include arch/um/scripts/Makefile.rules
diff --git a/arch/um/sys-x86_64/asm/archparam.h b/arch/um/sys-x86_64/asm/archparam.h
deleted file mode 100644
index 6c083663b8d9..000000000000
--- a/arch/um/sys-x86_64/asm/archparam.h
+++ /dev/null
@@ -1,16 +0,0 @@
-/*
- * Copyright 2003 PathScale, Inc.
- *
- * Licensed under the GPL
- */
-#ifndef __UM_ARCHPARAM_X86_64_H
-#define __UM_ARCHPARAM_X86_64_H
-/* No user-accessible fixmap addresses, i.e. vsyscall */
-#define FIXADDR_USER_START      0
-#define FIXADDR_USER_END        0
-#endif
diff --git a/arch/um/sys-x86_64/asm/elf.h b/arch/um/sys-x86_64/asm/elf.h
deleted file mode 100644
index 11a2bfb38859..000000000000
--- a/arch/um/sys-x86_64/asm/elf.h
+++ /dev/null
@@ -1,132 +0,0 @@
-/*
- * Copyright 2003 PathScale, Inc.
- * Copyright (C) 2003 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
- *
- * Licensed under the GPL
- */
-#ifndef __UM_ELF_X86_64_H
-#define __UM_ELF_X86_64_H
-#include <asm/user.h>
-#include "skas.h"
-/* x86-64 relocation types, taken from asm-x86_64/elf.h */
-#define R_X86_64_NONE           0       /* No reloc */
-#define R_X86_64_64             1       /* Direct 64 bit  */
-#define R_X86_64_PC32           2       /* PC relative 32 bit signed */
-#define R_X86_64_GOT32          3       /* 32 bit GOT entry */
-#define R_X86_64_PLT32          4       /* 32 bit PLT address */
-#define R_X86_64_COPY           5       /* Copy symbol at runtime */
-#define R_X86_64_GLOB_DAT       6       /* Create GOT entry */
-#define R_X86_64_JUMP_SLOT      7       /* Create PLT entry */
-#define R_X86_64_RELATIVE       8       /* Adjust by program base */
-#define R_X86_64_GOTPCREL       9       /* 32 bit signed pc relative
-                                           offset to GOT */
-#define R_X86_64_32             10      /* Direct 32 bit zero extended */
-#define R_X86_64_32S            11      /* Direct 32 bit sign extended */
-#define R_X86_64_16             12      /* Direct 16 bit zero extended */
-#define R_X86_64_PC16           13      /* 16 bit sign extended pc relative */
-#define R_X86_64_8              14      /* Direct 8 bit sign extended  */
-#define R_X86_64_PC8            15      /* 8 bit sign extended pc relative */
-#define R_X86_64_NUM            16
-typedef unsigned long elf_greg_t;
-#define ELF_NGREG (sizeof (struct user_regs_struct) / sizeof(elf_greg_t))
-typedef elf_greg_t elf_gregset_t[ELF_NGREG];
-typedef struct user_i387_struct elf_fpregset_t;
-/*
- * This is used to ensure we don't load something for the wrong architecture.
- */
-#define elf_check_arch(x) \
-        ((x)->e_machine == EM_X86_64)
-#define ELF_CLASS       ELFCLASS64
-#define ELF_DATA        ELFDATA2LSB
-#define ELF_ARCH        EM_X86_64
-#define ELF_PLAT_INIT(regs, load_addr)    do { \
-        PT_REGS_RBX(regs) = 0; \
-        PT_REGS_RCX(regs) = 0; \
-        PT_REGS_RDX(regs) = 0; \
-        PT_REGS_RSI(regs) = 0; \
-        PT_REGS_RDI(regs) = 0; \
-        PT_REGS_RBP(regs) = 0; \
-        PT_REGS_RAX(regs) = 0; \
-        PT_REGS_R8(regs) = 0; \
-        PT_REGS_R9(regs) = 0; \
-        PT_REGS_R10(regs) = 0; \
-        PT_REGS_R11(regs) = 0; \
-        PT_REGS_R12(regs) = 0; \
-        PT_REGS_R13(regs) = 0; \
-        PT_REGS_R14(regs) = 0; \
-        PT_REGS_R15(regs) = 0; \
-} while (0)
-#define ELF_CORE_COPY_REGS(pr_reg, _regs)               \
-        (pr_reg)[0] = (_regs)->regs.gp[0];                      \
-        (pr_reg)[1] = (_regs)->regs.gp[1];                      \
-        (pr_reg)[2] = (_regs)->regs.gp[2];                      \
-        (pr_reg)[3] = (_regs)->regs.gp[3];                      \
-        (pr_reg)[4] = (_regs)->regs.gp[4];                      \
-        (pr_reg)[5] = (_regs)->regs.gp[5];                      \
-        (pr_reg)[6] = (_regs)->regs.gp[6];                      \
-        (pr_reg)[7] = (_regs)->regs.gp[7];                      \
-        (pr_reg)[8] = (_regs)->regs.gp[8];                      \
-        (pr_reg)[9] = (_regs)->regs.gp[9];                      \
-        (pr_reg)[10] = (_regs)->regs.gp[10];                    \
-        (pr_reg)[11] = (_regs)->regs.gp[11];                    \
-        (pr_reg)[12] = (_regs)->regs.gp[12];                    \
-        (pr_reg)[13] = (_regs)->regs.gp[13];                    \
-        (pr_reg)[14] = (_regs)->regs.gp[14];                    \
-        (pr_reg)[15] = (_regs)->regs.gp[15];                    \
-        (pr_reg)[16] = (_regs)->regs.gp[16];                    \
-        (pr_reg)[17] = (_regs)->regs.gp[17];                    \
-        (pr_reg)[18] = (_regs)->regs.gp[18];                    \
-        (pr_reg)[19] = (_regs)->regs.gp[19];                    \
-        (pr_reg)[20] = (_regs)->regs.gp[20];                    \
-        (pr_reg)[21] = current->thread.arch.fs;                 \
-        (pr_reg)[22] = 0;                                       \
-        (pr_reg)[23] = 0;                                       \
-        (pr_reg)[24] = 0;                                       \
-        (pr_reg)[25] = 0;                                       \
-        (pr_reg)[26] = 0;
-#define task_pt_regs(t) (&(t)->thread.regs)
-struct task_struct;
-extern int elf_core_copy_fpregs(struct task_struct *t, elf_fpregset_t *fpu);
-#define ELF_CORE_COPY_FPREGS(t, fpu) elf_core_copy_fpregs(t, fpu)
-#ifdef TIF_IA32 /* XXX */
-#error XXX, indeed
-        clear_thread_flag(TIF_IA32);
-#endif
-#define ELF_EXEC_PAGESIZE 4096
-#define ELF_ET_DYN_BASE (2 * TASK_SIZE / 3)
-extern long elf_aux_hwcap;
-#define ELF_HWCAP (elf_aux_hwcap)
-#define ELF_PLATFORM "x86_64"
-#define SET_PERSONALITY(ex) do ; while(0)
-#define __HAVE_ARCH_GATE_AREA 1
-#define ARCH_HAS_SETUP_ADDITIONAL_PAGES 1
-struct linux_binprm;
-extern int arch_setup_additional_pages(struct linux_binprm *bprm,
-        int uses_interp);
-extern unsigned long um_vdso_addr;
-#define AT_SYSINFO_EHDR 33
-#define ARCH_DLINFO     NEW_AUX_ENT(AT_SYSINFO_EHDR, um_vdso_addr)
-#endif
diff --git a/arch/um/sys-x86_64/asm/module.h b/arch/um/sys-x86_64/asm/module.h
deleted file mode 100644
index 8eb79c2d07d5..000000000000
--- a/arch/um/sys-x86_64/asm/module.h
+++ /dev/null
@@ -1,20 +0,0 @@
-/*
- * Copyright 2003 PathScale, Inc.
- *
- * Licensed under the GPL
- */
-#ifndef __UM_MODULE_X86_64_H
-#define __UM_MODULE_X86_64_H
-/* UML is simple */
-struct mod_arch_specific
-{
-};
-#define Elf_Shdr Elf64_Shdr
-#define Elf_Sym Elf64_Sym
-#define Elf_Ehdr Elf64_Ehdr
-#endif
diff --git a/arch/um/sys-x86_64/asm/processor.h b/arch/um/sys-x86_64/asm/processor.h
deleted file mode 100644
index 875a26a62614..000000000000
--- a/arch/um/sys-x86_64/asm/processor.h
+++ /dev/null
@@ -1,56 +0,0 @@
-/*
- * Copyright 2003 PathScale, Inc.
- *
- * Licensed under the GPL
- */
-#ifndef __UM_PROCESSOR_X86_64_H
-#define __UM_PROCESSOR_X86_64_H
-/* include faultinfo structure */
-#include "sysdep/faultinfo.h"
-struct arch_thread {
-        unsigned long debugregs[8];
-        int debugregs_seq;
-        unsigned long fs;
-        struct faultinfo faultinfo;
-};
-/* REP NOP (PAUSE) is a good thing to insert into busy-wait loops. */
-static inline void rep_nop(void)
-{
-        __asm__ __volatile__("rep;nop": : :"memory");
-}
-#define cpu_relax()   rep_nop()
-#define INIT_ARCH_THREAD { .debugregs           = { [ 0 ... 7 ] = 0 }, \
-                           .debugregs_seq       = 0, \
-                           .fs                  = 0, \
-                           .faultinfo           = { 0, 0, 0 } }
-static inline void arch_flush_thread(struct arch_thread *thread)
-{
-}
-static inline void arch_copy_thread(struct arch_thread *from,
-                                    struct arch_thread *to)
-{
-        to->fs = from->fs;
-}
-#include <asm/user.h>
-#define current_text_addr() \
-        ({ void *pc; __asm__("movq $1f,%0\n1:":"=g" (pc)); pc; })
-#define ARCH_IS_STACKGROW(address) \
-        (address + 128 >= UPT_SP(&current->thread.regs.regs))
-#define KSTK_EIP(tsk) KSTK_REG(tsk, RIP)
-#define KSTK_ESP(tsk) KSTK_REG(tsk, RSP)
-#include "asm/processor-generic.h"
-#endif
diff --git a/arch/um/sys-x86_64/asm/ptrace.h b/arch/um/sys-x86_64/asm/ptrace.h
deleted file mode 100644
index 83d8c473b905..000000000000
--- a/arch/um/sys-x86_64/asm/ptrace.h
+++ /dev/null
@@ -1,72 +0,0 @@
-/*
- * Copyright 2003 PathScale, Inc.
- *
- * Licensed under the GPL
- */
-#ifndef __UM_PTRACE_X86_64_H
-#define __UM_PTRACE_X86_64_H
-#include "linux/compiler.h"
-#include "asm/errno.h"
-#define __FRAME_OFFSETS /* Needed to get the R* macros */
-#include "asm/ptrace-generic.h"
-#define HOST_AUDIT_ARCH AUDIT_ARCH_X86_64
-#define PT_REGS_RBX(r) UPT_RBX(&(r)->regs)
-#define PT_REGS_RCX(r) UPT_RCX(&(r)->regs)
-#define PT_REGS_RDX(r) UPT_RDX(&(r)->regs)
-#define PT_REGS_RSI(r) UPT_RSI(&(r)->regs)
-#define PT_REGS_RDI(r) UPT_RDI(&(r)->regs)
-#define PT_REGS_RBP(r) UPT_RBP(&(r)->regs)
-#define PT_REGS_RAX(r) UPT_RAX(&(r)->regs)
-#define PT_REGS_R8(r) UPT_R8(&(r)->regs)
-#define PT_REGS_R9(r) UPT_R9(&(r)->regs)
-#define PT_REGS_R10(r) UPT_R10(&(r)->regs)
-#define PT_REGS_R11(r) UPT_R11(&(r)->regs)
-#define PT_REGS_R12(r) UPT_R12(&(r)->regs)
-#define PT_REGS_R13(r) UPT_R13(&(r)->regs)
-#define PT_REGS_R14(r) UPT_R14(&(r)->regs)
-#define PT_REGS_R15(r) UPT_R15(&(r)->regs)
-#define PT_REGS_FS(r) UPT_FS(&(r)->regs)
-#define PT_REGS_GS(r) UPT_GS(&(r)->regs)
-#define PT_REGS_DS(r) UPT_DS(&(r)->regs)
-#define PT_REGS_ES(r) UPT_ES(&(r)->regs)
-#define PT_REGS_SS(r) UPT_SS(&(r)->regs)
-#define PT_REGS_CS(r) UPT_CS(&(r)->regs)
-#define PT_REGS_ORIG_RAX(r) UPT_ORIG_RAX(&(r)->regs)
-#define PT_REGS_RIP(r) UPT_IP(&(r)->regs)
-#define PT_REGS_RSP(r) UPT_SP(&(r)->regs)
-#define PT_REGS_EFLAGS(r) UPT_EFLAGS(&(r)->regs)
-/* XXX */
-#define user_mode(r) UPT_IS_USER(&(r)->regs)
-#define PT_REGS_ORIG_SYSCALL(r) PT_REGS_RAX(r)
-#define PT_REGS_SYSCALL_RET(r) PT_REGS_RAX(r)
-#define PT_FIX_EXEC_STACK(sp) do ; while(0)
-#define profile_pc(regs) PT_REGS_IP(regs)
-struct user_desc;
-static inline int ptrace_get_thread_area(struct task_struct *child, int idx,
-                                         struct user_desc __user *user_desc)
-{
-        return -ENOSYS;
-}
-static inline int ptrace_set_thread_area(struct task_struct *child, int idx,
-                                         struct user_desc __user *user_desc)
-{
-        return -ENOSYS;
-}
-extern long arch_prctl(struct task_struct *task, int code,
-                       unsigned long __user *addr);
-#endif
diff --git a/arch/um/sys-x86_64/bug.c b/arch/um/sys-x86_64/bug.c
deleted file mode 100644
index e8034e363d83..000000000000
--- a/arch/um/sys-x86_64/bug.c
+++ /dev/null
@@ -1,21 +0,0 @@
-/*
- * Copyright (C) 2006 Jeff Dike (jdike@addtoit.com)
- * Licensed under the GPL V2
- */
-#include <linux/uaccess.h>
-/*
- * Mostly copied from i386/x86_86 - eliminated the eip < PAGE_OFFSET because
- * that's not relevant in skas mode.
- */
-int is_valid_bugaddr(unsigned long eip)
-{
-        unsigned short ud2;
-        if (probe_kernel_address((unsigned short __user *)eip, ud2))
-                return 0;
-        return ud2 == 0x0b0f;
-}
diff --git a/arch/um/sys-x86_64/bugs.c b/arch/um/sys-x86_64/bugs.c
deleted file mode 100644
index 44e02ba2a265..000000000000
--- a/arch/um/sys-x86_64/bugs.c
+++ /dev/null
@@ -1,15 +0,0 @@
-/*
- * Copyright 2003 PathScale, Inc.
- *
- * Licensed under the GPL
- */
-#include "sysdep/ptrace.h"
-void arch_check_bugs(void)
-{
-}
-void arch_examine_signal(int sig, struct uml_pt_regs *regs)
-{
-}
diff --git a/arch/um/sys-x86_64/delay.c b/arch/um/sys-x86_64/delay.c
deleted file mode 100644
index f3fe1a688f7e..000000000000
--- a/arch/um/sys-x86_64/delay.c
+++ /dev/null
@@ -1,60 +0,0 @@
-/*
- * Copyright (C) 2011 Richard Weinberger <richrd@nod.at>
- * Mostly copied from arch/x86/lib/delay.c
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/delay.h>
-#include <asm/param.h>
-void __delay(unsigned long loops)
-{
-        asm volatile(
-                "test %0,%0\n"
-                "jz 3f\n"
-                "jmp 1f\n"
-                ".align 16\n"
-                "1: jmp 2f\n"
-                ".align 16\n"
-                "2: dec %0\n"
-                " jnz 2b\n"
-                "3: dec %0\n"
-                : /* we don't need output */
-                : "a" (loops)
-        );
-}
-EXPORT_SYMBOL(__delay);
-inline void __const_udelay(unsigned long xloops)
-{
-        int d0;
-        xloops *= 4;
-        asm("mull %%edx"
-                : "=d" (xloops), "=&a" (d0)
-                : "1" (xloops), "0"
-                (loops_per_jiffy * (HZ/4)));
-        __delay(++xloops);
-}
-EXPORT_SYMBOL(__const_udelay);
-void __udelay(unsigned long usecs)
-{
-        __const_udelay(usecs * 0x000010c7); /* 2**32 / 1000000 (rounded up) */
-}
-EXPORT_SYMBOL(__udelay);
-void __ndelay(unsigned long nsecs)
-{
-        __const_udelay(nsecs * 0x00005); /* 2**32 / 1000000000 (rounded up) */
-}
-EXPORT_SYMBOL(__ndelay);
diff --git a/arch/um/sys-x86_64/fault.c b/arch/um/sys-x86_64/fault.c
deleted file mode 100644
index ce85117fc64e..000000000000
--- a/arch/um/sys-x86_64/fault.c
+++ /dev/null
@@ -1,28 +0,0 @@
-/*
- * Copyright 2003 PathScale, Inc.
- *
- * Licensed under the GPL
- */
-#include "sysdep/ptrace.h"
-/* These two are from asm-um/uaccess.h and linux/module.h, check them. */
-struct exception_table_entry
-{
-        unsigned long insn;
-        unsigned long fixup;
-};
-const struct exception_table_entry *search_exception_tables(unsigned long add);
-int arch_fixup(unsigned long address, struct uml_pt_regs *regs)
-{
-        const struct exception_table_entry *fixup;
-        fixup = search_exception_tables(address);
-        if (fixup != 0) {
-                UPT_IP(regs) = fixup->fixup;
-                return 1;
-        }
-        return 0;
-}
diff --git a/arch/um/sys-x86_64/ksyms.c b/arch/um/sys-x86_64/ksyms.c
deleted file mode 100644
index 1db2fce00948..000000000000
--- a/arch/um/sys-x86_64/ksyms.c
+++ /dev/null
@@ -1,11 +0,0 @@
-#include <linux/module.h>
-#include <asm/string.h>
-#include <asm/checksum.h>
-/*XXX: we need them because they would be exported by x86_64 */
-#if (__GNUC__ == 4 && __GNUC_MINOR__ >= 3) || __GNUC__ > 4
-EXPORT_SYMBOL(memcpy);
-#else
-EXPORT_SYMBOL(__memcpy);
-#endif
-EXPORT_SYMBOL(csum_partial);
diff --git a/arch/um/sys-x86_64/mem.c b/arch/um/sys-x86_64/mem.c
deleted file mode 100644
index 546518727a73..000000000000
--- a/arch/um/sys-x86_64/mem.c
+++ /dev/null
@@ -1,26 +0,0 @@
-#include "linux/mm.h"
-#include "asm/page.h"
-#include "asm/mman.h"
-const char *arch_vma_name(struct vm_area_struct *vma)
-{
-        if (vma->vm_mm && vma->vm_start == um_vdso_addr)
-                return "[vdso]";
-        return NULL;
-}
-struct vm_area_struct *get_gate_vma(struct mm_struct *mm)
-{
-        return NULL;
-}
-int in_gate_area(struct mm_struct *mm, unsigned long addr)
-{
-        return 0;
-}
-int in_gate_area_no_mm(unsigned long addr)
-{
-        return 0;
-}
diff --git a/arch/um/sys-x86_64/ptrace.c b/arch/um/sys-x86_64/ptrace.c
deleted file mode 100644
index 4005506834fd..000000000000
--- a/arch/um/sys-x86_64/ptrace.c
+++ /dev/null
@@ -1,198 +0,0 @@
-/*
- * Copyright 2003 PathScale, Inc.
- * Copyright (C) 2003 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
- *
- * Licensed under the GPL
- */
-#include <linux/mm.h>
-#include <linux/sched.h>
-#include <linux/errno.h>
-#define __FRAME_OFFSETS
-#include <asm/ptrace.h>
-#include <asm/uaccess.h>
-/*
- * determines which flags the user has access to.
- * 1 = access 0 = no access
- */
-#define FLAG_MASK 0x44dd5UL
-int putreg(struct task_struct *child, int regno, unsigned long value)
-{
-        unsigned long tmp;
-#ifdef TIF_IA32
-        /*
-         * Some code in the 64bit emulation may not be 64bit clean.
-         * Don't take any chances.
-         */
-        if (test_tsk_thread_flag(child, TIF_IA32))
-                value &= 0xffffffff;
-#endif
-        switch (regno) {
-        case FS:
-        case GS:
-        case DS:
-        case ES:
-        case SS:
-        case CS:
-                if (value && (value & 3) != 3)
-                        return -EIO;
-                value &= 0xffff;
-                break;
-        case FS_BASE:
-        case GS_BASE:
-                if (!((value >> 48) == 0 || (value >> 48) == 0xffff))
-                        return -EIO;
-                break;
-        case EFLAGS:
-                value &= FLAG_MASK;
-                tmp = PT_REGS_EFLAGS(&child->thread.regs) & ~FLAG_MASK;
-                value |= tmp;
-                break;
-        }
-        PT_REGS_SET(&child->thread.regs, regno, value);
-        return 0;
-}
-int poke_user(struct task_struct *child, long addr, long data)
-{
-        if ((addr & 3) || addr < 0)
-                return -EIO;
-        if (addr < MAX_REG_OFFSET)
-                return putreg(child, addr, data);
-        else if ((addr >= offsetof(struct user, u_debugreg[0])) &&
-                (addr <= offsetof(struct user, u_debugreg[7]))) {
-                addr -= offsetof(struct user, u_debugreg[0]);
-                addr = addr >> 2;
-                if ((addr == 4) || (addr == 5))
-                        return -EIO;
-                child->thread.arch.debugregs[addr] = data;
-                return 0;
-        }
-        return -EIO;
-}
-unsigned long getreg(struct task_struct *child, int regno)
-{
-        unsigned long retval = ~0UL;
-        switch (regno) {
-        case FS:
-        case GS:
-        case DS:
-        case ES:
-        case SS:
-        case CS:
-                retval = 0xffff;
-                /* fall through */
-        default:
-                retval &= PT_REG(&child->thread.regs, regno);
-#ifdef TIF_IA32
-                if (test_tsk_thread_flag(child, TIF_IA32))
-                        retval &= 0xffffffff;
-#endif
-        }
-        return retval;
-}
-int peek_user(struct task_struct *child, long addr, long data)
-{
-        /* read the word at location addr in the USER area. */
-        unsigned long tmp;
-        if ((addr & 3) || addr < 0)
-                return -EIO;
-        tmp = 0;  /* Default return condition */
-        if (addr < MAX_REG_OFFSET)
-                tmp = getreg(child, addr);
-        else if ((addr >= offsetof(struct user, u_debugreg[0])) &&
-                (addr <= offsetof(struct user, u_debugreg[7]))) {
-                addr -= offsetof(struct user, u_debugreg[0]);
-                addr = addr >> 2;
-                tmp = child->thread.arch.debugregs[addr];
-        }
-        return put_user(tmp, (unsigned long *) data);
-}
-/* XXX Mostly copied from sys-i386 */
-int is_syscall(unsigned long addr)
-{
-        unsigned short instr;
-        int n;
-        n = copy_from_user(&instr, (void __user *) addr, sizeof(instr));
-        if (n) {
-                /*
-                 * access_process_vm() grants access to vsyscall and stub,
-                 * while copy_from_user doesn't. Maybe access_process_vm is
-                 * slow, but that doesn't matter, since it will be called only
-                 * in case of singlestepping, if copy_from_user failed.
-                 */
-                n = access_process_vm(current, addr, &instr, sizeof(instr), 0);
-                if (n != sizeof(instr)) {
-                        printk("is_syscall : failed to read instruction from "
-                               "0x%lx\n", addr);
-                        return 1;
-                }
-        }
-        /* sysenter */
-        return instr == 0x050f;
-}
-static int get_fpregs(struct user_i387_struct __user *buf, struct task_struct *child)
-{
-        int err, n, cpu = ((struct thread_info *) child->stack)->cpu;
-        long fpregs[HOST_FP_SIZE];
-        BUG_ON(sizeof(*buf) != sizeof(fpregs));
-        err = save_fp_registers(userspace_pid[cpu], fpregs);
-        if (err)
-                return err;
-        n = copy_to_user(buf, fpregs, sizeof(fpregs));
-        if (n > 0)
-                return -EFAULT;
-        return n;
-}
-static int set_fpregs(struct user_i387_struct __user *buf, struct task_struct *child)
-{
-        int n, cpu = ((struct thread_info *) child->stack)->cpu;
-        long fpregs[HOST_FP_SIZE];
-        BUG_ON(sizeof(*buf) != sizeof(fpregs));
-        n = copy_from_user(fpregs, buf, sizeof(fpregs));
-        if (n > 0)
-                return -EFAULT;
-        return restore_fp_registers(userspace_pid[cpu], fpregs);
-}
-long subarch_ptrace(struct task_struct *child, long request,
-                    unsigned long addr, unsigned long data)
-{
-        int ret = -EIO;
-        void __user *datap = (void __user *) data;
-        switch (request) {
-        case PTRACE_GETFPREGS: /* Get the child FPU state. */
-                ret = get_fpregs(datap, child);
-                break;
-        case PTRACE_SETFPREGS: /* Set the child FPU state. */
-                ret = set_fpregs(datap, child);
-                break;
-        case PTRACE_ARCH_PRCTL:
-                /* XXX Calls ptrace on the host - needs some SMP thinking */
-                ret = arch_prctl(child, data, (void __user *) addr);
-                break;
-        }
-        return ret;
-}
diff --git a/arch/um/sys-x86_64/ptrace_user.c b/arch/um/sys-x86_64/ptrace_user.c
deleted file mode 100644
index c57a496d3f5b..000000000000
--- a/arch/um/sys-x86_64/ptrace_user.c
+++ /dev/null
@@ -1,22 +0,0 @@
-/*
- * Copyright 2003 PathScale, Inc.
- *
- * Licensed under the GPL
- */
-#include <errno.h>
-#include "ptrace_user.h"
-int ptrace_getregs(long pid, unsigned long *regs_out)
-{
-        if (ptrace(PTRACE_GETREGS, pid, 0, regs_out) < 0)
-                return -errno;
-        return(0);
-}
-int ptrace_setregs(long pid, unsigned long *regs_out)
-{
-        if (ptrace(PTRACE_SETREGS, pid, 0, regs_out) < 0)
-                return -errno;
-        return(0);
-}
diff --git a/arch/um/sys-x86_64/setjmp.S b/arch/um/sys-x86_64/setjmp.S
deleted file mode 100644
index 45f547b4043e..000000000000
--- a/arch/um/sys-x86_64/setjmp.S
+++ /dev/null
@@ -1,54 +0,0 @@
-#
-# arch/x86_64/setjmp.S
-#
-# setjmp/longjmp for the x86-64 architecture
-#
-#
-# The jmp_buf is assumed to contain the following, in order:
-#       %rbx
-#       %rsp (post-return)
-#       %rbp
-#       %r12
-#       %r13
-#       %r14
-#       %r15
-#       <return address>
-#
-        .text
-        .align 4
-        .globl setjmp
-        .type setjmp, @function
-setjmp:
-        pop  %rsi                       # Return address, and adjust the stack
-        xorl %eax,%eax                  # Return value
-        movq %rbx,(%rdi)
-        movq %rsp,8(%rdi)               # Post-return %rsp!
-        push %rsi                       # Make the call/return stack happy
-        movq %rbp,16(%rdi)
-        movq %r12,24(%rdi)
-        movq %r13,32(%rdi)
-        movq %r14,40(%rdi)
-        movq %r15,48(%rdi)
-        movq %rsi,56(%rdi)              # Return address
-        ret
-        .size setjmp,.-setjmp
-        .text
-        .align 4
-        .globl longjmp
-        .type longjmp, @function
-longjmp:
-        movl %esi,%eax                  # Return value (int)
-        movq (%rdi),%rbx
-        movq 8(%rdi),%rsp
-        movq 16(%rdi),%rbp
-        movq 24(%rdi),%r12
-        movq 32(%rdi),%r13
-        movq 40(%rdi),%r14
-        movq 48(%rdi),%r15
-        jmp *56(%rdi)
-        .size longjmp,.-longjmp
diff --git a/arch/um/sys-x86_64/shared/sysdep/archsetjmp.h b/arch/um/sys-x86_64/shared/sysdep/archsetjmp.h
deleted file mode 100644
index 2af8f12ca161..000000000000
--- a/arch/um/sys-x86_64/shared/sysdep/archsetjmp.h
+++ /dev/null
@@ -1,24 +0,0 @@
-/*
- * arch/um/include/sysdep-x86_64/archsetjmp.h
- */
-#ifndef _KLIBC_ARCHSETJMP_H
-#define _KLIBC_ARCHSETJMP_H
-struct __jmp_buf {
-        unsigned long __rbx;
-        unsigned long __rsp;
-        unsigned long __rbp;
-        unsigned long __r12;
-        unsigned long __r13;
-        unsigned long __r14;
-        unsigned long __r15;
-        unsigned long __rip;
-};
-typedef struct __jmp_buf jmp_buf[1];
-#define JB_IP __rip
-#define JB_SP __rsp
-#endif                          /* _SETJMP_H */
diff --git a/arch/um/sys-x86_64/shared/sysdep/barrier.h b/arch/um/sys-x86_64/shared/sysdep/barrier.h
deleted file mode 100644
index 7b610befdc8f..000000000000
--- a/arch/um/sys-x86_64/shared/sysdep/barrier.h
+++ /dev/null
@@ -1,7 +0,0 @@
-#ifndef __SYSDEP_X86_64_BARRIER_H
-#define __SYSDEP_X86_64_BARRIER_H
-/* Copied from include/asm-x86_64 for use by userspace. */
-#define mb()    asm volatile("mfence":::"memory")
-#endif
diff --git a/arch/um/sys-x86_64/shared/sysdep/checksum.h b/arch/um/sys-x86_64/shared/sysdep/checksum.h
deleted file mode 100644
index a5be9031ea85..000000000000
--- a/arch/um/sys-x86_64/shared/sysdep/checksum.h
+++ /dev/null
@@ -1,144 +0,0 @@
-/*
- * Licensed under the GPL
- */
-#ifndef __UM_SYSDEP_CHECKSUM_H
-#define __UM_SYSDEP_CHECKSUM_H
-#include "linux/string.h"
-#include "linux/in6.h"
-#include "asm/uaccess.h"
-extern __wsum csum_partial(const void *buff, int len, __wsum sum);
-/*
- *      Note: when you get a NULL pointer exception here this means someone
- *      passed in an incorrect kernel address to one of these functions.
- *
- *      If you use these functions directly please don't forget the
- *      access_ok().
- */
-static __inline__
-__wsum csum_partial_copy_nocheck(const void *src, void *dst,
-                                       int len, __wsum sum)
-{
-        memcpy(dst, src, len);
-        return(csum_partial(dst, len, sum));
-}
-static __inline__
-__wsum csum_partial_copy_from_user(const void __user *src,
-                                         void *dst, int len, __wsum sum,
-                                         int *err_ptr)
-{
-        if (copy_from_user(dst, src, len)) {
-                *err_ptr = -EFAULT;
-                return (__force __wsum)-1;
-        }
-        return csum_partial(dst, len, sum);
-}
-/**
- * csum_fold - Fold and invert a 32bit checksum.
- * sum: 32bit unfolded sum
- *
- * Fold a 32bit running checksum to 16bit and invert it. This is usually
- * the last step before putting a checksum into a packet.
- * Make sure not to mix with 64bit checksums.
- */
-static inline __sum16 csum_fold(__wsum sum)
-{
-        __asm__(
-                "  addl %1,%0\n"
-                "  adcl $0xffff,%0"
-                : "=r" (sum)
-                : "r" ((__force u32)sum << 16),
-                  "0" ((__force u32)sum & 0xffff0000)
-        );
-        return (__force __sum16)(~(__force u32)sum >> 16);
-}
-/**
- * csum_tcpup_nofold - Compute an IPv4 pseudo header checksum.
- * @saddr: source address
- * @daddr: destination address
- * @len: length of packet
- * @proto: ip protocol of packet
- * @sum: initial sum to be added in (32bit unfolded)
- *
- * Returns the pseudo header checksum the input data. Result is
- * 32bit unfolded.
- */
-static inline __wsum
-csum_tcpudp_nofold(__be32 saddr, __be32 daddr, unsigned short len,
-                   unsigned short proto, __wsum sum)
-{
-        asm("  addl %1, %0\n"
-            "  adcl %2, %0\n"
-            "  adcl %3, %0\n"
-            "  adcl $0, %0\n"
-                : "=r" (sum)
-            : "g" (daddr), "g" (saddr), "g" ((len + proto) << 8), "0" (sum));
-        return sum;
-}
-/*
- * computes the checksum of the TCP/UDP pseudo-header
- * returns a 16-bit checksum, already complemented
- */
-static inline __sum16 csum_tcpudp_magic(__be32 saddr, __be32 daddr,
-                                           unsigned short len,
-                                           unsigned short proto,
-                                           __wsum sum)
-{
-        return csum_fold(csum_tcpudp_nofold(saddr,daddr,len,proto,sum));
-}
-/**
- * ip_fast_csum - Compute the IPv4 header checksum efficiently.
- * iph: ipv4 header
- * ihl: length of header / 4
- */
-static inline __sum16 ip_fast_csum(const void *iph, unsigned int ihl)
-{
-        unsigned int sum;
-        asm(    "  movl (%1), %0\n"
-                "  subl $4, %2\n"
-                "  jbe 2f\n"
-                "  addl 4(%1), %0\n"
-                "  adcl 8(%1), %0\n"
-                "  adcl 12(%1), %0\n"
-                "1: adcl 16(%1), %0\n"
-                "  lea 4(%1), %1\n"
-                "  decl %2\n"
-                "  jne  1b\n"
-                "  adcl $0, %0\n"
-                "  movl %0, %2\n"
-                "  shrl $16, %0\n"
-                "  addw %w2, %w0\n"
-                "  adcl $0, %0\n"
-                "  notl %0\n"
-                "2:"
-        /* Since the input registers which are loaded with iph and ipl
-           are modified, we must also specify them as outputs, or gcc
-           will assume they contain their original values. */
-        : "=r" (sum), "=r" (iph), "=r" (ihl)
-        : "1" (iph), "2" (ihl)
-        : "memory");
-        return (__force __sum16)sum;
-}
-static inline unsigned add32_with_carry(unsigned a, unsigned b)
-{
-        asm("addl %2,%0\n\t"
-            "adcl $0,%0"
-            : "=r" (a)
-            : "0" (a), "r" (b));
-        return a;
-}
-extern __sum16 ip_compute_csum(const void *buff, int len);
-#endif
diff --git a/arch/um/sys-x86_64/shared/sysdep/faultinfo.h b/arch/um/sys-x86_64/shared/sysdep/faultinfo.h
deleted file mode 100644
index cb917b0d5660..000000000000
--- a/arch/um/sys-x86_64/shared/sysdep/faultinfo.h
+++ /dev/null
@@ -1,29 +0,0 @@
-/*
- * Copyright (C) 2004 Fujitsu Siemens Computers GmbH
- * Author: Bodo Stroesser <bstroesser@fujitsu-siemens.com>
- * Licensed under the GPL
- */
-#ifndef __FAULTINFO_X86_64_H
-#define __FAULTINFO_X86_64_H
-/* this structure contains the full arch-specific faultinfo
- * from the traps.
- * On i386, ptrace_faultinfo unfortunately doesn't provide
- * all the info, since trap_no is missing.
- * All common elements are defined at the same position in
- * both structures, thus making it easy to copy the
- * contents without knowledge about the structure elements.
- */
-struct faultinfo {
-        int error_code; /* in ptrace_faultinfo misleadingly called is_write */
-        unsigned long cr2; /* in ptrace_faultinfo called addr */
-        int trap_no; /* missing in ptrace_faultinfo */
-};
-#define FAULT_WRITE(fi) ((fi).error_code & 2)
-#define FAULT_ADDRESS(fi) ((fi).cr2)
-#define PTRACE_FULL_FAULTINFO 1
-#endif
diff --git a/arch/um/sys-x86_64/shared/sysdep/host_ldt.h b/arch/um/sys-x86_64/shared/sysdep/host_ldt.h
deleted file mode 100644
index e8b1be1e154f..000000000000
--- a/arch/um/sys-x86_64/shared/sysdep/host_ldt.h
+++ /dev/null
@@ -1,38 +0,0 @@
-#ifndef __ASM_HOST_LDT_X86_64_H
-#define __ASM_HOST_LDT_X86_64_H
-#include <asm/ldt.h>
-/*
- * macros stolen from include/asm-x86_64/desc.h
- */
-#define LDT_entry_a(info) \
-        ((((info)->base_addr & 0x0000ffff) << 16) | ((info)->limit & 0x0ffff))
-/* Don't allow setting of the lm bit. It is useless anyways because
- * 64bit system calls require __USER_CS. */
-#define LDT_entry_b(info) \
-        (((info)->base_addr & 0xff000000) | \
-        (((info)->base_addr & 0x00ff0000) >> 16) | \
-        ((info)->limit & 0xf0000) | \
-        (((info)->read_exec_only ^ 1) << 9) | \
-        ((info)->contents << 10) | \
-        (((info)->seg_not_present ^ 1) << 15) | \
-        ((info)->seg_32bit << 22) | \
-        ((info)->limit_in_pages << 23) | \
-        ((info)->useable << 20) | \
-        /* ((info)->lm << 21) | */ \
-        0x7000)
-#define LDT_empty(info) (\
-        (info)->base_addr       == 0    && \
-        (info)->limit           == 0    && \
-        (info)->contents        == 0    && \
-        (info)->read_exec_only  == 1    && \
-        (info)->seg_32bit       == 0    && \
-        (info)->limit_in_pages  == 0    && \
-        (info)->seg_not_present == 1    && \
-        (info)->useable         == 0    && \
-        (info)->lm              == 0)
-#endif
diff --git a/arch/um/sys-x86_64/shared/sysdep/kernel-offsets.h b/arch/um/sys-x86_64/shared/sysdep/kernel-offsets.h
deleted file mode 100644
index a307237b7964..000000000000
--- a/arch/um/sys-x86_64/shared/sysdep/kernel-offsets.h
+++ /dev/null
@@ -1,23 +0,0 @@
-#include <linux/stddef.h>
-#include <linux/sched.h>
-#include <linux/time.h>
-#include <linux/elf.h>
-#include <linux/crypto.h>
-#include <asm/page.h>
-#include <asm/mman.h>
-#define DEFINE(sym, val) \
-        asm volatile("\n->" #sym " %0 " #val : : "i" (val))
-#define DEFINE_STR1(x) #x
-#define DEFINE_STR(sym, val) asm volatile("\n->" #sym " " DEFINE_STR1(val) " " #val: : )
-#define BLANK() asm volatile("\n->" : : )
-#define OFFSET(sym, str, mem) \
-        DEFINE(sym, offsetof(struct str, mem));
-void foo(void)
-{
-#include <common-offsets.h>
-}
diff --git a/arch/um/sys-x86_64/shared/sysdep/ptrace.h b/arch/um/sys-x86_64/shared/sysdep/ptrace.h
deleted file mode 100644
index 8ee8f8e12af1..000000000000
--- a/arch/um/sys-x86_64/shared/sysdep/ptrace.h
+++ /dev/null
@@ -1,240 +0,0 @@
-/*
- * Copyright 2003 PathScale, Inc.
- * Copyright (C) 2003 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
- *
- * Licensed under the GPL
- */
-#ifndef __SYSDEP_X86_64_PTRACE_H
-#define __SYSDEP_X86_64_PTRACE_H
-#include "user_constants.h"
-#include "sysdep/faultinfo.h"
-#define MAX_REG_OFFSET (UM_FRAME_SIZE)
-#define MAX_REG_NR ((MAX_REG_OFFSET) / sizeof(unsigned long))
-#include "skas_ptregs.h"
-#define REGS_IP(r) ((r)[HOST_IP])
-#define REGS_SP(r) ((r)[HOST_SP])
-#define REGS_RBX(r) ((r)[HOST_RBX])
-#define REGS_RCX(r) ((r)[HOST_RCX])
-#define REGS_RDX(r) ((r)[HOST_RDX])
-#define REGS_RSI(r) ((r)[HOST_RSI])
-#define REGS_RDI(r) ((r)[HOST_RDI])
-#define REGS_RBP(r) ((r)[HOST_RBP])
-#define REGS_RAX(r) ((r)[HOST_RAX])
-#define REGS_R8(r) ((r)[HOST_R8])
-#define REGS_R9(r) ((r)[HOST_R9])
-#define REGS_R10(r) ((r)[HOST_R10])
-#define REGS_R11(r) ((r)[HOST_R11])
-#define REGS_R12(r) ((r)[HOST_R12])
-#define REGS_R13(r) ((r)[HOST_R13])
-#define REGS_R14(r) ((r)[HOST_R14])
-#define REGS_R15(r) ((r)[HOST_R15])
-#define REGS_CS(r) ((r)[HOST_CS])
-#define REGS_EFLAGS(r) ((r)[HOST_EFLAGS])
-#define REGS_SS(r) ((r)[HOST_SS])
-#define HOST_FS_BASE 21
-#define HOST_GS_BASE 22
-#define HOST_DS 23
-#define HOST_ES 24
-#define HOST_FS 25
-#define HOST_GS 26
-/* Also defined in asm/ptrace-x86_64.h, but not in libc headers.  So, these
- * are already defined for kernel code, but not for userspace code.
- */
-#ifndef FS_BASE
-/* These aren't defined in ptrace.h, but exist in struct user_regs_struct,
- * which is what x86_64 ptrace actually uses.
- */
-#define FS_BASE (HOST_FS_BASE * sizeof(long))
-#define GS_BASE (HOST_GS_BASE * sizeof(long))
-#define DS (HOST_DS * sizeof(long))
-#define ES (HOST_ES * sizeof(long))
-#define FS (HOST_FS * sizeof(long))
-#define GS (HOST_GS * sizeof(long))
-#endif
-#define REGS_FS_BASE(r) ((r)[HOST_FS_BASE])
-#define REGS_GS_BASE(r) ((r)[HOST_GS_BASE])
-#define REGS_DS(r) ((r)[HOST_DS])
-#define REGS_ES(r) ((r)[HOST_ES])
-#define REGS_FS(r) ((r)[HOST_FS])
-#define REGS_GS(r) ((r)[HOST_GS])
-#define REGS_ORIG_RAX(r) ((r)[HOST_ORIG_RAX])
-#define REGS_SET_SYSCALL_RETURN(r, res) REGS_RAX(r) = (res)
-#define REGS_RESTART_SYSCALL(r) IP_RESTART_SYSCALL(REGS_IP(r))
-#define REGS_SEGV_IS_FIXABLE(r) SEGV_IS_FIXABLE((r)->trap_type)
-#define REGS_FAULT_ADDR(r) ((r)->fault_addr)
-#define REGS_FAULT_WRITE(r) FAULT_WRITE((r)->fault_type)
-#define REGS_TRAP(r) ((r)->trap_type)
-#define REGS_ERR(r) ((r)->fault_type)
-struct uml_pt_regs {
-        unsigned long gp[MAX_REG_NR];
-        unsigned long fp[HOST_FP_SIZE];
-        struct faultinfo faultinfo;
-        long syscall;
-        int is_user;
-};
-#define EMPTY_UML_PT_REGS { }
-#define UPT_RBX(r) REGS_RBX((r)->gp)
-#define UPT_RCX(r) REGS_RCX((r)->gp)
-#define UPT_RDX(r) REGS_RDX((r)->gp)
-#define UPT_RSI(r) REGS_RSI((r)->gp)
-#define UPT_RDI(r) REGS_RDI((r)->gp)
-#define UPT_RBP(r) REGS_RBP((r)->gp)
-#define UPT_RAX(r) REGS_RAX((r)->gp)
-#define UPT_R8(r) REGS_R8((r)->gp)
-#define UPT_R9(r) REGS_R9((r)->gp)
-#define UPT_R10(r) REGS_R10((r)->gp)
-#define UPT_R11(r) REGS_R11((r)->gp)
-#define UPT_R12(r) REGS_R12((r)->gp)
-#define UPT_R13(r) REGS_R13((r)->gp)
-#define UPT_R14(r) REGS_R14((r)->gp)
-#define UPT_R15(r) REGS_R15((r)->gp)
-#define UPT_CS(r) REGS_CS((r)->gp)
-#define UPT_FS_BASE(r) REGS_FS_BASE((r)->gp)
-#define UPT_FS(r) REGS_FS((r)->gp)
-#define UPT_GS_BASE(r) REGS_GS_BASE((r)->gp)
-#define UPT_GS(r) REGS_GS((r)->gp)
-#define UPT_DS(r) REGS_DS((r)->gp)
-#define UPT_ES(r) REGS_ES((r)->gp)
-#define UPT_CS(r) REGS_CS((r)->gp)
-#define UPT_SS(r) REGS_SS((r)->gp)
-#define UPT_ORIG_RAX(r) REGS_ORIG_RAX((r)->gp)
-#define UPT_IP(r) REGS_IP((r)->gp)
-#define UPT_SP(r) REGS_SP((r)->gp)
-#define UPT_EFLAGS(r) REGS_EFLAGS((r)->gp)
-#define UPT_SYSCALL_NR(r) ((r)->syscall)
-#define UPT_SYSCALL_RET(r) UPT_RAX(r)
-extern int user_context(unsigned long sp);
-#define UPT_IS_USER(r) ((r)->is_user)
-#define UPT_SYSCALL_ARG1(r) UPT_RDI(r)
-#define UPT_SYSCALL_ARG2(r) UPT_RSI(r)
-#define UPT_SYSCALL_ARG3(r) UPT_RDX(r)
-#define UPT_SYSCALL_ARG4(r) UPT_R10(r)
-#define UPT_SYSCALL_ARG5(r) UPT_R8(r)
-#define UPT_SYSCALL_ARG6(r) UPT_R9(r)
-struct syscall_args {
-        unsigned long args[6];
-};
-#define SYSCALL_ARGS(r) ((struct syscall_args) \
-                         { .args = { UPT_SYSCALL_ARG1(r),        \
-                                     UPT_SYSCALL_ARG2(r),        \
-                                     UPT_SYSCALL_ARG3(r),        \
-                                     UPT_SYSCALL_ARG4(r),        \
-                                     UPT_SYSCALL_ARG5(r),        \
-                                     UPT_SYSCALL_ARG6(r) } } )
-#define UPT_REG(regs, reg) \
-        ({      unsigned long val;              \
-                switch(reg){                                            \
-                case R8: val = UPT_R8(regs); break;                     \
-                case R9: val = UPT_R9(regs); break;                     \
-                case R10: val = UPT_R10(regs); break;                   \
-                case R11: val = UPT_R11(regs); break;                   \
-                case R12: val = UPT_R12(regs); break;                   \
-                case R13: val = UPT_R13(regs); break;                   \
-                case R14: val = UPT_R14(regs); break;                   \
-                case R15: val = UPT_R15(regs); break;                   \
-                case RIP: val = UPT_IP(regs); break;                    \
-                case RSP: val = UPT_SP(regs); break;                    \
-                case RAX: val = UPT_RAX(regs); break;                   \
-                case RBX: val = UPT_RBX(regs); break;                   \
-                case RCX: val = UPT_RCX(regs); break;                   \
-                case RDX: val = UPT_RDX(regs); break;                   \
-                case RSI: val = UPT_RSI(regs); break;                   \
-                case RDI: val = UPT_RDI(regs); break;                   \
-                case RBP: val = UPT_RBP(regs); break;                   \
-                case ORIG_RAX: val = UPT_ORIG_RAX(regs); break;         \
-                case CS: val = UPT_CS(regs); break;                     \
-                case SS: val = UPT_SS(regs); break;                     \
-                case FS_BASE: val = UPT_FS_BASE(regs); break;           \
-                case GS_BASE: val = UPT_GS_BASE(regs); break;           \
-                case DS: val = UPT_DS(regs); break;                     \
-                case ES: val = UPT_ES(regs); break;                     \
-                case FS : val = UPT_FS (regs); break;                   \
-                case GS: val = UPT_GS(regs); break;                     \
-                case EFLAGS: val = UPT_EFLAGS(regs); break;             \
-                default :                                               \
-                        panic("Bad register in UPT_REG : %d\n", reg);   \
-                        val = -1;                                       \
-                }                                                       \
-                val;                                                    \
-        })
-#define UPT_SET(regs, reg, val) \
-        ({      unsigned long __upt_val = val;  \
-                switch(reg){                                            \
-                case R8: UPT_R8(regs) = __upt_val; break;               \
-                case R9: UPT_R9(regs) = __upt_val; break;               \
-                case R10: UPT_R10(regs) = __upt_val; break;             \
-                case R11: UPT_R11(regs) = __upt_val; break;             \
-                case R12: UPT_R12(regs) = __upt_val; break;             \
-                case R13: UPT_R13(regs) = __upt_val; break;             \
-                case R14: UPT_R14(regs) = __upt_val; break;             \
-                case R15: UPT_R15(regs) = __upt_val; break;             \
-                case RIP: UPT_IP(regs) = __upt_val; break;              \
-                case RSP: UPT_SP(regs) = __upt_val; break;              \
-                case RAX: UPT_RAX(regs) = __upt_val; break;             \
-                case RBX: UPT_RBX(regs) = __upt_val; break;             \
-                case RCX: UPT_RCX(regs) = __upt_val; break;             \
-                case RDX: UPT_RDX(regs) = __upt_val; break;             \
-                case RSI: UPT_RSI(regs) = __upt_val; break;             \
-                case RDI: UPT_RDI(regs) = __upt_val; break;             \
-                case RBP: UPT_RBP(regs) = __upt_val; break;             \
-                case ORIG_RAX: UPT_ORIG_RAX(regs) = __upt_val; break;   \
-                case CS: UPT_CS(regs) = __upt_val; break;               \
-                case SS: UPT_SS(regs) = __upt_val; break;               \
-                case FS_BASE: UPT_FS_BASE(regs) = __upt_val; break;     \
-                case GS_BASE: UPT_GS_BASE(regs) = __upt_val; break;     \
-                case DS: UPT_DS(regs) = __upt_val; break;               \
-                case ES: UPT_ES(regs) = __upt_val; break;               \
-                case FS: UPT_FS(regs) = __upt_val; break;               \
-                case GS: UPT_GS(regs) = __upt_val; break;               \
-                case EFLAGS: UPT_EFLAGS(regs) = __upt_val; break;       \
-                default :                                               \
-                        panic("Bad register in UPT_SET : %d\n", reg);   \
-                        break;                                          \
-                }                                                       \
-                __upt_val;                                              \
-        })
-#define UPT_SET_SYSCALL_RETURN(r, res) \
-        REGS_SET_SYSCALL_RETURN((r)->regs, (res))
-#define UPT_RESTART_SYSCALL(r) REGS_RESTART_SYSCALL((r)->gp)
-#define UPT_SEGV_IS_FIXABLE(r) REGS_SEGV_IS_FIXABLE(&r->skas)
-#define UPT_FAULTINFO(r) (&(r)->faultinfo)
-static inline void arch_init_registers(int pid)
-{
-}
-#endif
diff --git a/arch/um/sys-x86_64/shared/sysdep/ptrace_user.h b/arch/um/sys-x86_64/shared/sysdep/ptrace_user.h
deleted file mode 100644
index 4dbccdb58f48..000000000000
--- a/arch/um/sys-x86_64/shared/sysdep/ptrace_user.h
+++ /dev/null
@@ -1,77 +0,0 @@
-/*
- * Copyright 2003 PathScale, Inc.
- *
- * Licensed under the GPL
- */
-#ifndef __SYSDEP_X86_64_PTRACE_USER_H__
-#define __SYSDEP_X86_64_PTRACE_USER_H__
-#define __FRAME_OFFSETS
-#include <sys/ptrace.h>
-#include <linux/ptrace.h>
-#include <asm/ptrace.h>
-#undef __FRAME_OFFSETS
-#include "user_constants.h"
-#define PT_INDEX(off) ((off) / sizeof(unsigned long))
-#define PT_SYSCALL_NR(regs) ((regs)[PT_INDEX(ORIG_RAX)])
-#define PT_SYSCALL_NR_OFFSET (ORIG_RAX)
-#define PT_SYSCALL_ARG1(regs) (((unsigned long *) (regs))[PT_INDEX(RDI)])
-#define PT_SYSCALL_ARG1_OFFSET (RDI)
-#define PT_SYSCALL_ARG2(regs) (((unsigned long *) (regs))[PT_INDEX(RSI)])
-#define PT_SYSCALL_ARG2_OFFSET (RSI)
-#define PT_SYSCALL_ARG3(regs) (((unsigned long *) (regs))[PT_INDEX(RDX)])
-#define PT_SYSCALL_ARG3_OFFSET (RDX)
-#define PT_SYSCALL_ARG4(regs) (((unsigned long *) (regs))[PT_INDEX(RCX)])
-#define PT_SYSCALL_ARG4_OFFSET (RCX)
-#define PT_SYSCALL_ARG5(regs) (((unsigned long *) (regs))[PT_INDEX(R8)])
-#define PT_SYSCALL_ARG5_OFFSET (R8)
-#define PT_SYSCALL_ARG6(regs) (((unsigned long *) (regs))[PT_INDEX(R9)])
-#define PT_SYSCALL_ARG6_OFFSET (R9)
-#define PT_SYSCALL_RET_OFFSET (RAX)
-#define PT_IP_OFFSET (RIP)
-#define PT_IP(regs) ((regs)[PT_INDEX(RIP)])
-#define PT_SP_OFFSET (RSP)
-#define PT_SP(regs) ((regs)[PT_INDEX(RSP)])
-#define PT_ORIG_RAX_OFFSET (ORIG_RAX)
-#define PT_ORIG_RAX(regs) ((regs)[PT_INDEX(ORIG_RAX)])
-/*
- * x86_64 FC3 doesn't define this in /usr/include/linux/ptrace.h even though
- * it's defined in the kernel's include/linux/ptrace.h. Additionally, use the
- * 2.4 name and value for 2.4 host compatibility.
- */
-#ifndef PTRACE_OLDSETOPTIONS
-#define PTRACE_OLDSETOPTIONS 21
-#endif
-/*
- * These are before the system call, so the system call number is RAX
- * rather than ORIG_RAX, and arg4 is R10 rather than RCX
- */
-#define REGS_SYSCALL_NR PT_INDEX(RAX)
-#define REGS_SYSCALL_ARG1 PT_INDEX(RDI)
-#define REGS_SYSCALL_ARG2 PT_INDEX(RSI)
-#define REGS_SYSCALL_ARG3 PT_INDEX(RDX)
-#define REGS_SYSCALL_ARG4 PT_INDEX(R10)
-#define REGS_SYSCALL_ARG5 PT_INDEX(R8)
-#define REGS_SYSCALL_ARG6 PT_INDEX(R9)
-#define REGS_IP_INDEX PT_INDEX(RIP)
-#define REGS_SP_INDEX PT_INDEX(RSP)
-#define FP_SIZE (HOST_FP_SIZE)
-#endif
diff --git a/arch/um/sys-x86_64/shared/sysdep/sc.h b/arch/um/sys-x86_64/shared/sysdep/sc.h
deleted file mode 100644
index 8aee45b07434..000000000000
--- a/arch/um/sys-x86_64/shared/sysdep/sc.h
+++ /dev/null
@@ -1,45 +0,0 @@
-#ifndef __SYSDEP_X86_64_SC_H
-#define __SYSDEP_X86_64_SC_H
-/* Copyright (C) 2003 - 2004 PathScale, Inc
- * Released under the GPL
- */
-#include <user_constants.h>
-#define SC_OFFSET(sc, field) \
-         *((unsigned long *) &(((char *) (sc))[HOST_##field]))
-#define SC_RBX(sc) SC_OFFSET(sc, SC_RBX)
-#define SC_RCX(sc) SC_OFFSET(sc, SC_RCX)
-#define SC_RDX(sc) SC_OFFSET(sc, SC_RDX)
-#define SC_RSI(sc) SC_OFFSET(sc, SC_RSI)
-#define SC_RDI(sc) SC_OFFSET(sc, SC_RDI)
-#define SC_RBP(sc) SC_OFFSET(sc, SC_RBP)
-#define SC_RAX(sc) SC_OFFSET(sc, SC_RAX)
-#define SC_R8(sc) SC_OFFSET(sc, SC_R8)
-#define SC_R9(sc) SC_OFFSET(sc, SC_R9)
-#define SC_R10(sc) SC_OFFSET(sc, SC_R10)
-#define SC_R11(sc) SC_OFFSET(sc, SC_R11)
-#define SC_R12(sc) SC_OFFSET(sc, SC_R12)
-#define SC_R13(sc) SC_OFFSET(sc, SC_R13)
-#define SC_R14(sc) SC_OFFSET(sc, SC_R14)
-#define SC_R15(sc) SC_OFFSET(sc, SC_R15)
-#define SC_IP(sc) SC_OFFSET(sc, SC_IP)
-#define SC_SP(sc) SC_OFFSET(sc, SC_SP)
-#define SC_CR2(sc) SC_OFFSET(sc, SC_CR2)
-#define SC_ERR(sc) SC_OFFSET(sc, SC_ERR)
-#define SC_TRAPNO(sc) SC_OFFSET(sc, SC_TRAPNO)
-#define SC_CS(sc) SC_OFFSET(sc, SC_CS)
-#define SC_FS(sc) SC_OFFSET(sc, SC_FS)
-#define SC_GS(sc) SC_OFFSET(sc, SC_GS)
-#define SC_EFLAGS(sc) SC_OFFSET(sc, SC_EFLAGS)
-#define SC_SIGMASK(sc) SC_OFFSET(sc, SC_SIGMASK)
-#define SC_SS(sc) SC_OFFSET(sc, SC_SS)
-#if 0
-#define SC_ORIG_RAX(sc) SC_OFFSET(sc, SC_ORIG_RAX)
-#define SC_DS(sc) SC_OFFSET(sc, SC_DS)
-#define SC_ES(sc) SC_OFFSET(sc, SC_ES)
-#endif
-#endif
diff --git a/arch/um/sys-x86_64/shared/sysdep/sigcontext.h b/arch/um/sys-x86_64/shared/sysdep/sigcontext.h
deleted file mode 100644
index 0155133b1458..000000000000
--- a/arch/um/sys-x86_64/shared/sysdep/sigcontext.h
+++ /dev/null
@@ -1,27 +0,0 @@
-/*
- * Copyright 2003 PathScale, Inc.
- *
- * Licensed under the GPL
- */
-#ifndef __SYSDEP_X86_64_SIGCONTEXT_H
-#define __SYSDEP_X86_64_SIGCONTEXT_H
-#include <sysdep/sc.h>
-#define IP_RESTART_SYSCALL(ip) ((ip) -= 2)
-#define GET_FAULTINFO_FROM_SC(fi, sc) \
-        { \
-                (fi).cr2 = SC_CR2(sc); \
-                (fi).error_code = SC_ERR(sc); \
-                (fi).trap_no = SC_TRAPNO(sc); \
-        }
-/* This is Page Fault */
-#define SEGV_IS_FIXABLE(fi)     ((fi)->trap_no == 14)
-/* No broken SKAS API, which doesn't pass trap_no, here. */
-#define SEGV_MAYBE_FIXABLE(fi)  0
-#endif
diff --git a/arch/um/sys-x86_64/shared/sysdep/skas_ptrace.h b/arch/um/sys-x86_64/shared/sysdep/skas_ptrace.h
deleted file mode 100644
index 95db4be786e4..000000000000
--- a/arch/um/sys-x86_64/shared/sysdep/skas_ptrace.h
+++ /dev/null
@@ -1,22 +0,0 @@
-/*
- * Copyright (C) 2000, 2001, 2002 Jeff Dike (jdike@karaya.com)
- * Licensed under the GPL
- */
-#ifndef __SYSDEP_X86_64_SKAS_PTRACE_H
-#define __SYSDEP_X86_64_SKAS_PTRACE_H
-struct ptrace_faultinfo {
-        int is_write;
-        unsigned long addr;
-};
-struct ptrace_ldt {
-        int func;
-        void *ptr;
-        unsigned long bytecount;
-};
-#define PTRACE_LDT 54
-#endif
diff --git a/arch/um/sys-x86_64/shared/sysdep/stub.h b/arch/um/sys-x86_64/shared/sysdep/stub.h
deleted file mode 100644
index 3432aa249970..000000000000
--- a/arch/um/sys-x86_64/shared/sysdep/stub.h
+++ /dev/null
@@ -1,107 +0,0 @@
-/*
- * Copyright (C) 2004 Jeff Dike (jdike@addtoit.com)
- * Licensed under the GPL
- */
-#ifndef __SYSDEP_STUB_H
-#define __SYSDEP_STUB_H
-#include <sys/mman.h>
-#include <asm/unistd.h>
-#include <sysdep/ptrace_user.h>
-#include "as-layout.h"
-#include "stub-data.h"
-#include "kern_constants.h"
-extern void stub_segv_handler(int sig);
-extern void stub_clone_handler(void);
-#define STUB_SYSCALL_RET PT_INDEX(RAX)
-#define STUB_MMAP_NR __NR_mmap
-#define MMAP_OFFSET(o) (o)
-#define __syscall_clobber "r11","rcx","memory"
-#define __syscall "syscall"
-static inline long stub_syscall0(long syscall)
-{
-        long ret;
-        __asm__ volatile (__syscall
-                : "=a" (ret)
-                : "0" (syscall) : __syscall_clobber );
-        return ret;
-}
-static inline long stub_syscall2(long syscall, long arg1, long arg2)
-{
-        long ret;
-        __asm__ volatile (__syscall
-                : "=a" (ret)
-                : "0" (syscall), "D" (arg1), "S" (arg2) : __syscall_clobber );
-        return ret;
-}
-static inline long stub_syscall3(long syscall, long arg1, long arg2, long arg3)
-{
-        long ret;
-        __asm__ volatile (__syscall
-                : "=a" (ret)
-                : "0" (syscall), "D" (arg1), "S" (arg2), "d" (arg3)
-                : __syscall_clobber );
-        return ret;
-}
-static inline long stub_syscall4(long syscall, long arg1, long arg2, long arg3,
-                                 long arg4)
-{
-        long ret;
-        __asm__ volatile ("movq %5,%%r10 ; " __syscall
-                : "=a" (ret)
-                : "0" (syscall), "D" (arg1), "S" (arg2), "d" (arg3),
-                  "g" (arg4)
-                : __syscall_clobber, "r10" );
-        return ret;
-}
-static inline long stub_syscall5(long syscall, long arg1, long arg2, long arg3,
-                                 long arg4, long arg5)
-{
-        long ret;
-        __asm__ volatile ("movq %5,%%r10 ; movq %6,%%r8 ; " __syscall
-                : "=a" (ret)
-                : "0" (syscall), "D" (arg1), "S" (arg2), "d" (arg3),
-                  "g" (arg4), "g" (arg5)
-                : __syscall_clobber, "r10", "r8" );
-        return ret;
-}
-static inline void trap_myself(void)
-{
-        __asm("int3");
-}
-static inline void remap_stack(long fd, unsigned long offset)
-{
-        __asm__ volatile ("movq %4,%%r10 ; movq %5,%%r8 ; "
-                          "movq %6, %%r9; " __syscall "; movq %7, %%rbx ; "
-                          "movq %%rax, (%%rbx)":
-                          : "a" (STUB_MMAP_NR), "D" (STUB_DATA),
-                            "S" (UM_KERN_PAGE_SIZE),
-                            "d" (PROT_READ | PROT_WRITE),
-                            "g" (MAP_FIXED | MAP_SHARED), "g" (fd),
-                            "g" (offset),
-                            "i" (&((struct stub_data *) STUB_DATA)->err)
-                          : __syscall_clobber, "r10", "r8", "r9" );
-}
-#endif
diff --git a/arch/um/sys-x86_64/shared/sysdep/syscalls.h b/arch/um/sys-x86_64/shared/sysdep/syscalls.h
deleted file mode 100644
index 7cfb0b085655..000000000000
--- a/arch/um/sys-x86_64/shared/sysdep/syscalls.h
+++ /dev/null
@@ -1,33 +0,0 @@
-/*
- * Copyright 2003 PathScale, Inc.
- *
- * Licensed under the GPL
- */
-#ifndef __SYSDEP_X86_64_SYSCALLS_H__
-#define __SYSDEP_X86_64_SYSCALLS_H__
-#include <linux/msg.h>
-#include <linux/shm.h>
-#include <kern_constants.h>
-typedef long syscall_handler_t(void);
-extern syscall_handler_t *sys_call_table[];
-#define EXECUTE_SYSCALL(syscall, regs) \
-        (((long (*)(long, long, long, long, long, long)) \
-          (*sys_call_table[syscall]))(UPT_SYSCALL_ARG1(&regs->regs), \
-                                      UPT_SYSCALL_ARG2(&regs->regs), \
-                                      UPT_SYSCALL_ARG3(&regs->regs), \
-                                      UPT_SYSCALL_ARG4(&regs->regs), \
-                                      UPT_SYSCALL_ARG5(&regs->regs), \
-                                      UPT_SYSCALL_ARG6(&regs->regs)))
-extern long old_mmap(unsigned long addr, unsigned long len,
-                     unsigned long prot, unsigned long flags,
-                     unsigned long fd, unsigned long pgoff);
-extern syscall_handler_t sys_modify_ldt;
-extern syscall_handler_t sys_arch_prctl;
-#endif
diff --git a/arch/um/sys-x86_64/shared/sysdep/system.h b/arch/um/sys-x86_64/shared/sysdep/system.h
deleted file mode 100644
index d1b93c436200..000000000000
--- a/arch/um/sys-x86_64/shared/sysdep/system.h
+++ /dev/null
@@ -1,132 +0,0 @@
-#ifndef _ASM_X86_SYSTEM_H_
-#define _ASM_X86_SYSTEM_H_
-#include <asm/asm.h>
-#include <asm/segment.h>
-#include <asm/cpufeature.h>
-#include <asm/cmpxchg.h>
-#include <asm/nops.h>
-#include <linux/kernel.h>
-#include <linux/irqflags.h>
-/* entries in ARCH_DLINFO: */
-#ifdef CONFIG_IA32_EMULATION
-# define AT_VECTOR_SIZE_ARCH 2
-#else
-# define AT_VECTOR_SIZE_ARCH 1
-#endif
-extern unsigned long arch_align_stack(unsigned long sp);
-void default_idle(void);
-/*
- * Force strict CPU ordering.
- * And yes, this is required on UP too when we're talking
- * to devices.
- */
-#ifdef CONFIG_X86_32
-/*
- * Some non-Intel clones support out of order store. wmb() ceases to be a
- * nop for these.
- */
-#define mb() alternative("lock; addl $0,0(%%esp)", "mfence", X86_FEATURE_XMM2)
-#define rmb() alternative("lock; addl $0,0(%%esp)", "lfence", X86_FEATURE_XMM2)
-#define wmb() alternative("lock; addl $0,0(%%esp)", "sfence", X86_FEATURE_XMM)
-#else
-#define mb()    asm volatile("mfence":::"memory")
-#define rmb()   asm volatile("lfence":::"memory")
-#define wmb()   asm volatile("sfence" ::: "memory")
-#endif
-/**
- * read_barrier_depends - Flush all pending reads that subsequents reads
- * depend on.
- *
- * No data-dependent reads from memory-like regions are ever reordered
- * over this barrier.  All reads preceding this primitive are guaranteed
- * to access memory (but not necessarily other CPUs' caches) before any
- * reads following this primitive that depend on the data return by
- * any of the preceding reads.  This primitive is much lighter weight than
- * rmb() on most CPUs, and is never heavier weight than is
- * rmb().
- *
- * These ordering constraints are respected by both the local CPU
- * and the compiler.
- *
- * Ordering is not guaranteed by anything other than these primitives,
- * not even by data dependencies.  See the documentation for
- * memory_barrier() for examples and URLs to more information.
- *
- * For example, the following code would force ordering (the initial
- * value of "a" is zero, "b" is one, and "p" is "&a"):
- *
- * <programlisting>
- *      CPU 0                           CPU 1
- *
- *      b = 2;
- *      memory_barrier();
- *      p = &b;                         q = p;
- *                                      read_barrier_depends();
- *                                      d = *q;
- * </programlisting>
- *
- * because the read of "*q" depends on the read of "p" and these
- * two reads are separated by a read_barrier_depends().  However,
- * the following code, with the same initial values for "a" and "b":
- *
- * <programlisting>
- *      CPU 0                           CPU 1
- *
- *      a = 2;
- *      memory_barrier();
- *      b = 3;                          y = b;
- *                                      read_barrier_depends();
- *                                      x = a;
- * </programlisting>
- *
- * does not enforce ordering, since there is no data dependency between
- * the read of "a" and the read of "b".  Therefore, on some CPUs, such
- * as Alpha, "y" could be set to 3 and "x" to 0.  Use rmb()
- * in cases like this where there are no data dependencies.
- **/
-#define read_barrier_depends()  do { } while (0)
-#ifdef CONFIG_SMP
-#define smp_mb()        mb()
-#ifdef CONFIG_X86_PPRO_FENCE
-# define smp_rmb()      rmb()
-#else
-# define smp_rmb()      barrier()
-#endif
-#ifdef CONFIG_X86_OOSTORE
-# define smp_wmb()      wmb()
-#else
-# define smp_wmb()      barrier()
-#endif
-#define smp_read_barrier_depends()      read_barrier_depends()
-#define set_mb(var, value) do { (void)xchg(&var, value); } while (0)
-#else
-#define smp_mb()        barrier()
-#define smp_rmb()       barrier()
-#define smp_wmb()       barrier()
-#define smp_read_barrier_depends()      do { } while (0)
-#define set_mb(var, value) do { var = value; barrier(); } while (0)
-#endif
-/*
- * Stop RDTSC speculation. This is needed when you need to use RDTSC
- * (or get_cycles or vread that possibly accesses the TSC) in a defined
- * code region.
- *
- * (Could use an alternative three way for this if there was one.)
- */
-static inline void rdtsc_barrier(void)
-{
-        alternative(ASM_NOP3, "mfence", X86_FEATURE_MFENCE_RDTSC);
-        alternative(ASM_NOP3, "lfence", X86_FEATURE_LFENCE_RDTSC);
-}
-#endif
diff --git a/arch/um/sys-x86_64/shared/sysdep/tls.h b/arch/um/sys-x86_64/shared/sysdep/tls.h
deleted file mode 100644
index 18c000d0357a..000000000000
--- a/arch/um/sys-x86_64/shared/sysdep/tls.h
+++ /dev/null
@@ -1,29 +0,0 @@
-#ifndef _SYSDEP_TLS_H
-#define _SYSDEP_TLS_H
-# ifndef __KERNEL__
-/* Change name to avoid conflicts with the original one from <asm/ldt.h>, which
- * may be named user_desc (but in 2.4 and in header matching its API was named
- * modify_ldt_ldt_s). */
-typedef struct um_dup_user_desc {
-        unsigned int  entry_number;
-        unsigned int  base_addr;
-        unsigned int  limit;
-        unsigned int  seg_32bit:1;
-        unsigned int  contents:2;
-        unsigned int  read_exec_only:1;
-        unsigned int  limit_in_pages:1;
-        unsigned int  seg_not_present:1;
-        unsigned int  useable:1;
-        unsigned int  lm:1;
-} user_desc_t;
-# else /* __KERNEL__ */
-#  include <ldt.h>
-typedef struct user_desc user_desc_t;
-# endif /* __KERNEL__ */
-#endif /* _SYSDEP_TLS_H */
diff --git a/arch/um/sys-x86_64/shared/sysdep/vm-flags.h b/arch/um/sys-x86_64/shared/sysdep/vm-flags.h
deleted file mode 100644
index 3978e55132d2..000000000000
--- a/arch/um/sys-x86_64/shared/sysdep/vm-flags.h
+++ /dev/null
@@ -1,15 +0,0 @@
-/*
- * Copyright (C) 2004 Jeff Dike (jdike@addtoit.com)
- * Copyright 2003 PathScale, Inc.
- * Licensed under the GPL
- */
-#ifndef __VM_FLAGS_X86_64_H
-#define __VM_FLAGS_X86_64_H
-#define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | VM_EXEC | \
-        VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
-#define VM_STACK_DEFAULT_FLAGS (VM_GROWSDOWN | VM_READ | VM_WRITE | \
-        VM_EXEC | VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
-#endif
diff --git a/arch/um/sys-x86_64/signal.c b/arch/um/sys-x86_64/signal.c
deleted file mode 100644
index b6b65c7c7a7d..000000000000
--- a/arch/um/sys-x86_64/signal.c
+++ /dev/null
@@ -1,290 +0,0 @@
-/*
- * Copyright (C) 2003 PathScale, Inc.
- * Copyright (C) 2003 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
- * Licensed under the GPL
- */
-#include <linux/personality.h>
-#include <linux/ptrace.h>
-#include <linux/kernel.h>
-#include <asm/unistd.h>
-#include <asm/uaccess.h>
-#include <asm/ucontext.h>
-#include "frame_kern.h"
-#include "skas.h"
-void copy_sc(struct uml_pt_regs *regs, void *from)
-{
-        struct sigcontext *sc = from;
-#define GETREG(regs, regno, sc, regname)                                \
-        (regs)->gp[(regno) / sizeof(unsigned long)] = (sc)->regname
-        GETREG(regs, R8, sc, r8);
-        GETREG(regs, R9, sc, r9);
-        GETREG(regs, R10, sc, r10);
-        GETREG(regs, R11, sc, r11);
-        GETREG(regs, R12, sc, r12);
-        GETREG(regs, R13, sc, r13);
-        GETREG(regs, R14, sc, r14);
-        GETREG(regs, R15, sc, r15);
-        GETREG(regs, RDI, sc, di);
-        GETREG(regs, RSI, sc, si);
-        GETREG(regs, RBP, sc, bp);
-        GETREG(regs, RBX, sc, bx);
-        GETREG(regs, RDX, sc, dx);
-        GETREG(regs, RAX, sc, ax);
-        GETREG(regs, RCX, sc, cx);
-        GETREG(regs, RSP, sc, sp);
-        GETREG(regs, RIP, sc, ip);
-        GETREG(regs, EFLAGS, sc, flags);
-        GETREG(regs, CS, sc, cs);
-#undef GETREG
-}
-static int copy_sc_from_user(struct pt_regs *regs,
-                             struct sigcontext __user *from,
-                             struct _fpstate __user *fpp)
-{
-        struct user_i387_struct fp;
-        int err = 0;
-#define GETREG(regs, regno, sc, regname)                                \
-        __get_user((regs)->regs.gp[(regno) / sizeof(unsigned long)],    \
-                   &(sc)->regname)
-        err |= GETREG(regs, R8, from, r8);
-        err |= GETREG(regs, R9, from, r9);
-        err |= GETREG(regs, R10, from, r10);
-        err |= GETREG(regs, R11, from, r11);
-        err |= GETREG(regs, R12, from, r12);
-        err |= GETREG(regs, R13, from, r13);
-        err |= GETREG(regs, R14, from, r14);
-        err |= GETREG(regs, R15, from, r15);
-        err |= GETREG(regs, RDI, from, di);
-        err |= GETREG(regs, RSI, from, si);
-        err |= GETREG(regs, RBP, from, bp);
-        err |= GETREG(regs, RBX, from, bx);
-        err |= GETREG(regs, RDX, from, dx);
-        err |= GETREG(regs, RAX, from, ax);
-        err |= GETREG(regs, RCX, from, cx);
-        err |= GETREG(regs, RSP, from, sp);
-        err |= GETREG(regs, RIP, from, ip);
-        err |= GETREG(regs, EFLAGS, from, flags);
-        err |= GETREG(regs, CS, from, cs);
-        if (err)
-                return 1;
-#undef GETREG
-        err = copy_from_user(&fp, fpp, sizeof(struct user_i387_struct));
-        if (err)
-                return 1;
-        err = restore_fp_registers(userspace_pid[current_thread_info()->cpu],
-                                   (unsigned long *) &fp);
-        if (err < 0) {
-                printk(KERN_ERR "copy_sc_from_user - "
-                       "restore_fp_registers failed, errno = %d\n",
-                       -err);
-                return 1;
-        }
-        return 0;
-}
-static int copy_sc_to_user(struct sigcontext __user *to,
-                           struct _fpstate __user *to_fp, struct pt_regs *regs,
-                           unsigned long mask, unsigned long sp)
-{
-        struct faultinfo * fi = &current->thread.arch.faultinfo;
-        struct user_i387_struct fp;
-        int err = 0;
-        err |= __put_user(0, &to->gs);
-        err |= __put_user(0, &to->fs);
-#define PUTREG(regs, regno, sc, regname)                                \
-        __put_user((regs)->regs.gp[(regno) / sizeof(unsigned long)],    \
-                   &(sc)->regname)
-        err |= PUTREG(regs, RDI, to, di);
-        err |= PUTREG(regs, RSI, to, si);
-        err |= PUTREG(regs, RBP, to, bp);
-        /*
-         * Must use original RSP, which is passed in, rather than what's in
-         * the pt_regs, because that's already been updated to point at the
-         * signal frame.
-         */
-        err |= __put_user(sp, &to->sp);
-        err |= PUTREG(regs, RBX, to, bx);
-        err |= PUTREG(regs, RDX, to, dx);
-        err |= PUTREG(regs, RCX, to, cx);
-        err |= PUTREG(regs, RAX, to, ax);
-        err |= PUTREG(regs, R8, to, r8);
-        err |= PUTREG(regs, R9, to, r9);
-        err |= PUTREG(regs, R10, to, r10);
-        err |= PUTREG(regs, R11, to, r11);
-        err |= PUTREG(regs, R12, to, r12);
-        err |= PUTREG(regs, R13, to, r13);
-        err |= PUTREG(regs, R14, to, r14);
-        err |= PUTREG(regs, R15, to, r15);
-        err |= PUTREG(regs, CS, to, cs); /* XXX x86_64 doesn't do this */
-        err |= __put_user(fi->cr2, &to->cr2);
-        err |= __put_user(fi->error_code, &to->err);
-        err |= __put_user(fi->trap_no, &to->trapno);
-        err |= PUTREG(regs, RIP, to, ip);
-        err |= PUTREG(regs, EFLAGS, to, flags);
-#undef PUTREG
-        err |= __put_user(mask, &to->oldmask);
-        if (err)
-                return 1;
-        err = save_fp_registers(userspace_pid[current_thread_info()->cpu],
-                                (unsigned long *) &fp);
-        if (err < 0) {
-                printk(KERN_ERR "copy_sc_from_user - restore_fp_registers "
-                       "failed, errno = %d\n", -err);
-                return 1;
-        }
-        if (copy_to_user(to_fp, &fp, sizeof(struct user_i387_struct)))
-                return 1;
-        return err;
-}
-struct rt_sigframe
-{
-        char __user *pretcode;
-        struct ucontext uc;
-        struct siginfo info;
-        struct _fpstate fpstate;
-};
-int setup_signal_stack_si(unsigned long stack_top, int sig,
-                          struct k_sigaction *ka, struct pt_regs * regs,
-                          siginfo_t *info, sigset_t *set)
-{
-        struct rt_sigframe __user *frame;
-        unsigned long save_sp = PT_REGS_RSP(regs);
-        int err = 0;
-        struct task_struct *me = current;
-        frame = (struct rt_sigframe __user *)
-                round_down(stack_top - sizeof(struct rt_sigframe), 16);
-        /* Subtract 128 for a red zone and 8 for proper alignment */
-        frame = (struct rt_sigframe __user *) ((unsigned long) frame - 128 - 8);
-        if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame)))
-                goto out;
-        if (ka->sa.sa_flags & SA_SIGINFO) {
-                err |= copy_siginfo_to_user(&frame->info, info);
-                if (err)
-                        goto out;
-        }
-        /*
-         * Update SP now because the page fault handler refuses to extend
-         * the stack if the faulting address is too far below the current
-         * SP, which frame now certainly is.  If there's an error, the original
-         * value is restored on the way out.
-         * When writing the sigcontext to the stack, we have to write the
-         * original value, so that's passed to copy_sc_to_user, which does
-         * the right thing with it.
-         */
-        PT_REGS_RSP(regs) = (unsigned long) frame;
-        /* Create the ucontext.  */
-        err |= __put_user(0, &frame->uc.uc_flags);
-        err |= __put_user(0, &frame->uc.uc_link);
-        err |= __put_user(me->sas_ss_sp, &frame->uc.uc_stack.ss_sp);
-        err |= __put_user(sas_ss_flags(save_sp),
-                          &frame->uc.uc_stack.ss_flags);
-        err |= __put_user(me->sas_ss_size, &frame->uc.uc_stack.ss_size);
-        err |= copy_sc_to_user(&frame->uc.uc_mcontext, &frame->fpstate, regs,
-                               set->sig[0], save_sp);
-        err |= __put_user(&frame->fpstate, &frame->uc.uc_mcontext.fpstate);
-        if (sizeof(*set) == 16) {
-                __put_user(set->sig[0], &frame->uc.uc_sigmask.sig[0]);
-                __put_user(set->sig[1], &frame->uc.uc_sigmask.sig[1]);
-        }
-        else
-                err |= __copy_to_user(&frame->uc.uc_sigmask, set,
-                                      sizeof(*set));
-        /*
-         * Set up to return from userspace.  If provided, use a stub
-         * already in userspace.
-         */
-        /* x86-64 should always use SA_RESTORER. */
-        if (ka->sa.sa_flags & SA_RESTORER)
-                err |= __put_user(ka->sa.sa_restorer, &frame->pretcode);
-        else
-                /* could use a vstub here */
-                goto restore_sp;
-        if (err)
-                goto restore_sp;
-        /* Set up registers for signal handler */
-        {
-                struct exec_domain *ed = current_thread_info()->exec_domain;
-                if (unlikely(ed && ed->signal_invmap && sig < 32))
-                        sig = ed->signal_invmap[sig];
-        }
-        PT_REGS_RDI(regs) = sig;
-        /* In case the signal handler was declared without prototypes */
-        PT_REGS_RAX(regs) = 0;
-        /*
-         * This also works for non SA_SIGINFO handlers because they expect the
-         * next argument after the signal number on the stack.
-         */
-        PT_REGS_RSI(regs) = (unsigned long) &frame->info;
-        PT_REGS_RDX(regs) = (unsigned long) &frame->uc;
-        PT_REGS_RIP(regs) = (unsigned long) ka->sa.sa_handler;
- out:
-        return err;
-restore_sp:
-        PT_REGS_RSP(regs) = save_sp;
-        return err;
-}
-long sys_rt_sigreturn(struct pt_regs *regs)
-{
-        unsigned long sp = PT_REGS_SP(&current->thread.regs);
-        struct rt_sigframe __user *frame =
-                (struct rt_sigframe __user *)(sp - 8);
-        struct ucontext __user *uc = &frame->uc;
-        sigset_t set;
-        if (copy_from_user(&set, &uc->uc_sigmask, sizeof(set)))
-                goto segfault;
-        sigdelsetmask(&set, ~_BLOCKABLE);
-        spin_lock_irq(&current->sighand->siglock);
-        current->blocked = set;
-        recalc_sigpending();
-        spin_unlock_irq(&current->sighand->siglock);
-        if (copy_sc_from_user(&current->thread.regs, &uc->uc_mcontext,
-                              &frame->fpstate))
-                goto segfault;
-        /* Avoid ERESTART handling */
-        PT_REGS_SYSCALL_NR(&current->thread.regs) = -1;
-        return PT_REGS_SYSCALL_RET(&current->thread.regs);
- segfault:
-        force_sig(SIGSEGV, current);
-        return 0;
-}
diff --git a/arch/um/sys-x86_64/stub.S b/arch/um/sys-x86_64/stub.S
deleted file mode 100644
index 20e4a96a6dcb..000000000000
--- a/arch/um/sys-x86_64/stub.S
+++ /dev/null
@@ -1,66 +0,0 @@
-#include "as-layout.h"
-        .globl syscall_stub
-.section .__syscall_stub, "ax"
-syscall_stub:
-        syscall
-        /* We don't have 64-bit constants, so this constructs the address
-         * we need.
-         */
-        movq    $(STUB_DATA >> 32), %rbx
-        salq    $32, %rbx
-        movq    $(STUB_DATA & 0xffffffff), %rcx
-        or      %rcx, %rbx
-        movq    %rax, (%rbx)
-        int3
-        .globl batch_syscall_stub
-batch_syscall_stub:
-        mov     $(STUB_DATA >> 32), %rbx
-        sal     $32, %rbx
-        mov     $(STUB_DATA & 0xffffffff), %rax
-        or      %rax, %rbx
-        /* load pointer to first operation */
-        mov     %rbx, %rsp
-        add     $0x10, %rsp
-again:
-        /* load length of additional data */
-        mov     0x0(%rsp), %rax
-        /* if(length == 0) : end of list */
-        /* write possible 0 to header */
-        mov     %rax, 8(%rbx)
-        cmp     $0, %rax
-        jz      done
-        /* save current pointer */
-        mov     %rsp, 8(%rbx)
-        /* skip additional data */
-        add     %rax, %rsp
-        /* load syscall-# */
-        pop     %rax
-        /* load syscall params */
-        pop     %rdi
-        pop     %rsi
-        pop     %rdx
-        pop     %r10
-        pop     %r8
-        pop     %r9
-        /* execute syscall */
-        syscall
-        /* check return value */
-        pop     %rcx
-        cmp     %rcx, %rax
-        je      again
-done:
-        /* save return value */
-        mov     %rax, (%rbx)
-        /* stop */
-        int3
diff --git a/arch/um/sys-x86_64/stub_segv.c b/arch/um/sys-x86_64/stub_segv.c
deleted file mode 100644
index ced051afc705..000000000000
--- a/arch/um/sys-x86_64/stub_segv.c
+++ /dev/null
@@ -1,22 +0,0 @@
-/*
- * Copyright (C) 2004 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
- * Licensed under the GPL
- */
-#include <signal.h>
-#include "as-layout.h"
-#include "sysdep/stub.h"
-#include "sysdep/faultinfo.h"
-#include "sysdep/sigcontext.h"
-void __attribute__ ((__section__ (".__syscall_stub")))
-stub_segv_handler(int sig)
-{
-        struct ucontext *uc;
-        __asm__ __volatile__("movq %%rdx, %0" : "=g" (uc) :);
-        GET_FAULTINFO_FROM_SC(*((struct faultinfo *) STUB_DATA),
-                              &uc->uc_mcontext);
-        trap_myself();
-}
diff --git a/arch/um/sys-x86_64/syscall_table.c b/arch/um/sys-x86_64/syscall_table.c
deleted file mode 100644
index 47d469e7e7ce..000000000000
--- a/arch/um/sys-x86_64/syscall_table.c
+++ /dev/null
@@ -1,65 +0,0 @@
-/*
- * System call table for UML/x86-64, copied from arch/x86_64/kernel/syscall.c
- * with some changes for UML.
- */
-#include <linux/linkage.h>
-#include <linux/sys.h>
-#include <linux/cache.h>
-#include <kern_constants.h>
-#define __NO_STUBS
-/*
- * Below you can see, in terms of #define's, the differences between the x86-64
- * and the UML syscall table.
- */
-/* Not going to be implemented by UML, since we have no hardware. */
-#define stub_iopl sys_ni_syscall
-#define sys_ioperm sys_ni_syscall
-/*
- * The UML TLS problem. Note that x86_64 does not implement this, so the below
- * is needed only for the ia32 compatibility.
- */
-/* On UML we call it this way ("old" means it's not mmap2) */
-#define sys_mmap old_mmap
-#define stub_clone sys_clone
-#define stub_fork sys_fork
-#define stub_vfork sys_vfork
-#define stub_execve sys_execve
-#define stub_rt_sigsuspend sys_rt_sigsuspend
-#define stub_sigaltstack sys_sigaltstack
-#define stub_rt_sigreturn sys_rt_sigreturn
-#define __SYSCALL(nr, sym) extern asmlinkage void sym(void) ;
-#undef _ASM_X86_UNISTD_64_H
-#include "../../x86/include/asm/unistd_64.h"
-#undef __SYSCALL
-#define __SYSCALL(nr, sym) [ nr ] = sym,
-#undef _ASM_X86_UNISTD_64_H
-typedef void (*sys_call_ptr_t)(void);
-extern void sys_ni_syscall(void);
-/*
- * We used to have a trick here which made sure that holes in the
- * x86_64 table were filled in with sys_ni_syscall, but a comment in
- * unistd_64.h says that holes aren't allowed, so the trick was
- * removed.
- * The trick looked like this
- *      [0 ... UM_NR_syscall_max] = &sys_ni_syscall
- * before including unistd_64.h - the later initializations overwrote
- * the sys_ni_syscall filler.
- */
-sys_call_ptr_t sys_call_table[] __cacheline_aligned = {
-#include "../../x86/include/asm/unistd_64.h"
-};
-int syscall_table_size = sizeof(sys_call_table);
diff --git a/arch/um/sys-x86_64/syscalls.c b/arch/um/sys-x86_64/syscalls.c
deleted file mode 100644
index f3d82bb6e15a..000000000000
--- a/arch/um/sys-x86_64/syscalls.c
+++ /dev/null
@@ -1,102 +0,0 @@
-/*
- * Copyright (C) 2003 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
- * Copyright 2003 PathScale, Inc.
- *
- * Licensed under the GPL
- */
-#include "linux/linkage.h"
-#include "linux/personality.h"
-#include "linux/utsname.h"
-#include "asm/prctl.h" /* XXX This should get the constants from libc */
-#include "asm/uaccess.h"
-#include "os.h"
-long arch_prctl(struct task_struct *task, int code, unsigned long __user *addr)
-{
-        unsigned long *ptr = addr, tmp;
-        long ret;
-        int pid = task->mm->context.id.u.pid;
-        /*
-         * With ARCH_SET_FS (and ARCH_SET_GS is treated similarly to
-         * be safe), we need to call arch_prctl on the host because
-         * setting %fs may result in something else happening (like a
-         * GDT or thread.fs being set instead).  So, we let the host
-         * fiddle the registers and thread struct and restore the
-         * registers afterwards.
-         *
-         * So, the saved registers are stored to the process (this
-         * needed because a stub may have been the last thing to run),
-         * arch_prctl is run on the host, then the registers are read
-         * back.
-         */
-        switch (code) {
-        case ARCH_SET_FS:
-        case ARCH_SET_GS:
-                ret = restore_registers(pid, &current->thread.regs.regs);
-                if (ret)
-                        return ret;
-                break;
-        case ARCH_GET_FS:
-        case ARCH_GET_GS:
-                /*
-                 * With these two, we read to a local pointer and
-                 * put_user it to the userspace pointer that we were
-                 * given.  If addr isn't valid (because it hasn't been
-                 * faulted in or is just bogus), we want put_user to
-                 * fault it in (or return -EFAULT) instead of having
-                 * the host return -EFAULT.
-                 */
-                ptr = &tmp;
-        }
-        ret = os_arch_prctl(pid, code, ptr);
-        if (ret)
-                return ret;
-        switch (code) {
-        case ARCH_SET_FS:
-                current->thread.arch.fs = (unsigned long) ptr;
-                ret = save_registers(pid, &current->thread.regs.regs);
-                break;
-        case ARCH_SET_GS:
-                ret = save_registers(pid, &current->thread.regs.regs);
-                break;
-        case ARCH_GET_FS:
-                ret = put_user(tmp, addr);
-                break;
-        case ARCH_GET_GS:
-                ret = put_user(tmp, addr);
-                break;
-        }
-        return ret;
-}
-long sys_arch_prctl(int code, unsigned long addr)
-{
-        return arch_prctl(current, code, (unsigned long __user *) addr);
-}
-long sys_clone(unsigned long clone_flags, unsigned long newsp,
-               void __user *parent_tid, void __user *child_tid)
-{
-        long ret;
-        if (!newsp)
-                newsp = UPT_SP(&current->thread.regs.regs);
-        current->thread.forking = 1;
-        ret = do_fork(clone_flags, newsp, &current->thread.regs, 0, parent_tid,
-                      child_tid);
-        current->thread.forking = 0;
-        return ret;
-}
-void arch_switch_to(struct task_struct *to)
-{
-        if ((to->thread.arch.fs == 0) || (to->mm == NULL))
-                return;
-        arch_prctl(to, ARCH_SET_FS, (void __user *) to->thread.arch.fs);
-}
diff --git a/arch/um/sys-x86_64/sysrq.c b/arch/um/sys-x86_64/sysrq.c
deleted file mode 100644
index f4f82beb3508..000000000000
--- a/arch/um/sys-x86_64/sysrq.c
+++ /dev/null
@@ -1,41 +0,0 @@
-/*
- * Copyright 2003 PathScale, Inc.
- *
- * Licensed under the GPL
- */
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/sched.h>
-#include <linux/utsname.h>
-#include <asm/current.h>
-#include <asm/ptrace.h>
-#include "sysrq.h"
-void __show_regs(struct pt_regs *regs)
-{
-        printk("\n");
-        print_modules();
-        printk(KERN_INFO "Pid: %d, comm: %.20s %s %s\n", task_pid_nr(current),
-                current->comm, print_tainted(), init_utsname()->release);
-        printk(KERN_INFO "RIP: %04lx:[<%016lx>]\n", PT_REGS_CS(regs) & 0xffff,
-               PT_REGS_RIP(regs));
-        printk(KERN_INFO "RSP: %016lx  EFLAGS: %08lx\n", PT_REGS_RSP(regs),
-               PT_REGS_EFLAGS(regs));
-        printk(KERN_INFO "RAX: %016lx RBX: %016lx RCX: %016lx\n",
-               PT_REGS_RAX(regs), PT_REGS_RBX(regs), PT_REGS_RCX(regs));
-        printk(KERN_INFO "RDX: %016lx RSI: %016lx RDI: %016lx\n",
-               PT_REGS_RDX(regs), PT_REGS_RSI(regs), PT_REGS_RDI(regs));
-        printk(KERN_INFO "RBP: %016lx R08: %016lx R09: %016lx\n",
-               PT_REGS_RBP(regs), PT_REGS_R8(regs), PT_REGS_R9(regs));
-        printk(KERN_INFO "R10: %016lx R11: %016lx R12: %016lx\n",
-               PT_REGS_R10(regs), PT_REGS_R11(regs), PT_REGS_R12(regs));
-        printk(KERN_INFO "R13: %016lx R14: %016lx R15: %016lx\n",
-               PT_REGS_R13(regs), PT_REGS_R14(regs), PT_REGS_R15(regs));
-}
-void show_regs(struct pt_regs *regs)
-{
-        __show_regs(regs);
-        show_trace(current, (unsigned long *) &regs);
-}
diff --git a/arch/um/sys-x86_64/tls.c b/arch/um/sys-x86_64/tls.c
deleted file mode 100644
index f7ba46200ecd..000000000000
--- a/arch/um/sys-x86_64/tls.c
+++ /dev/null
@@ -1,17 +0,0 @@
-#include "linux/sched.h"
-void clear_flushed_tls(struct task_struct *task)
-{
-}
-int arch_copy_tls(struct task_struct *t)
-{
-        /*
-         * If CLONE_SETTLS is set, we need to save the thread id
-         * (which is argument 5, child_tid, of clone) so it can be set
-         * during context switches.
-         */
-        t->thread.arch.fs = t->thread.regs.regs.gp[R8 / sizeof(long)];
-        return 0;
-}
diff --git a/arch/um/sys-x86_64/user-offsets.c b/arch/um/sys-x86_64/user-offsets.c
deleted file mode 100644
index 973585414a66..000000000000
--- a/arch/um/sys-x86_64/user-offsets.c
+++ /dev/null
@@ -1,65 +0,0 @@
-#include <stdio.h>
-#include <stddef.h>
-#include <signal.h>
-#include <sys/poll.h>
-#include <sys/mman.h>
-#include <sys/user.h>
-#define __FRAME_OFFSETS
-#include <asm/ptrace.h>
-#include <asm/types.h>
-#define DEFINE(sym, val) \
-        asm volatile("\n->" #sym " %0 " #val : : "i" (val))
-#define DEFINE_LONGS(sym, val) \
-        asm volatile("\n->" #sym " %0 " #val : : "i" (val/sizeof(unsigned long)))
-#define OFFSET(sym, str, mem) \
-        DEFINE(sym, offsetof(struct str, mem));
-void foo(void)
-{
-        OFFSET(HOST_SC_CR2, sigcontext, cr2);
-        OFFSET(HOST_SC_ERR, sigcontext, err);
-        OFFSET(HOST_SC_TRAPNO, sigcontext, trapno);
-        DEFINE(HOST_FP_SIZE, sizeof(struct _fpstate) / sizeof(unsigned long));
-        DEFINE_LONGS(HOST_RBX, RBX);
-        DEFINE_LONGS(HOST_RCX, RCX);
-        DEFINE_LONGS(HOST_RDI, RDI);
-        DEFINE_LONGS(HOST_RSI, RSI);
-        DEFINE_LONGS(HOST_RDX, RDX);
-        DEFINE_LONGS(HOST_RBP, RBP);
-        DEFINE_LONGS(HOST_RAX, RAX);
-        DEFINE_LONGS(HOST_R8, R8);
-        DEFINE_LONGS(HOST_R9, R9);
-        DEFINE_LONGS(HOST_R10, R10);
-        DEFINE_LONGS(HOST_R11, R11);
-        DEFINE_LONGS(HOST_R12, R12);
-        DEFINE_LONGS(HOST_R13, R13);
-        DEFINE_LONGS(HOST_R14, R14);
-        DEFINE_LONGS(HOST_R15, R15);
-        DEFINE_LONGS(HOST_ORIG_RAX, ORIG_RAX);
-        DEFINE_LONGS(HOST_CS, CS);
-        DEFINE_LONGS(HOST_SS, SS);
-        DEFINE_LONGS(HOST_EFLAGS, EFLAGS);
-#if 0
-        DEFINE_LONGS(HOST_FS, FS);
-        DEFINE_LONGS(HOST_GS, GS);
-        DEFINE_LONGS(HOST_DS, DS);
-        DEFINE_LONGS(HOST_ES, ES);
-#endif
-        DEFINE_LONGS(HOST_IP, RIP);
-        DEFINE_LONGS(HOST_SP, RSP);
-        DEFINE(UM_FRAME_SIZE, sizeof(struct user_regs_struct));
-        /* XXX Duplicated between i386 and x86_64 */
-        DEFINE(UM_POLLIN, POLLIN);
-        DEFINE(UM_POLLPRI, POLLPRI);
-        DEFINE(UM_POLLOUT, POLLOUT);
-        DEFINE(UM_PROT_READ, PROT_READ);
-        DEFINE(UM_PROT_WRITE, PROT_WRITE);
-        DEFINE(UM_PROT_EXEC, PROT_EXEC);
-}
diff --git a/arch/um/sys-x86_64/vdso/Makefile b/arch/um/sys-x86_64/vdso/Makefile
deleted file mode 100644
index 5dffe6d46686..000000000000
--- a/arch/um/sys-x86_64/vdso/Makefile
+++ /dev/null
@@ -1,90 +0,0 @@
-#
-# Building vDSO images for x86.
-#
-VDSO64-y                := y
-vdso-install-$(VDSO64-y)        += vdso.so
-# files to link into the vdso
-vobjs-y := vdso-note.o um_vdso.o
-# files to link into kernel
-obj-$(VDSO64-y)                 += vdso.o vma.o
-vobjs := $(foreach F,$(vobjs-y),$(obj)/$F)
-$(obj)/vdso.o: $(obj)/vdso.so
-targets += vdso.so vdso.so.dbg vdso.lds $(vobjs-y)
-export CPPFLAGS_vdso.lds += -P -C
-VDSO_LDFLAGS_vdso.lds = -m64 -Wl,-soname=linux-vdso.so.1 \
-       -Wl,-z,max-page-size=4096 -Wl,-z,common-page-size=4096
-$(obj)/vdso.o: $(src)/vdso.S $(obj)/vdso.so
-$(obj)/vdso.so.dbg: $(src)/vdso.lds $(vobjs) FORCE
-        $(call if_changed,vdso)
-$(obj)/%.so: OBJCOPYFLAGS := -S
-$(obj)/%.so: $(obj)/%.so.dbg FORCE
-        $(call if_changed,objcopy)
-#
-# Don't omit frame pointers for ease of userspace debugging, but do
-# optimize sibling calls.
-#
-CFL := $(PROFILING) -mcmodel=small -fPIC -O2 -fasynchronous-unwind-tables -m64 \
-       $(filter -g%,$(KBUILD_CFLAGS)) $(call cc-option, -fno-stack-protector) \
-       -fno-omit-frame-pointer -foptimize-sibling-calls
-$(vobjs): KBUILD_CFLAGS += $(CFL)
-#
-# vDSO code runs in userspace and -pg doesn't help with profiling anyway.
-#
-CFLAGS_REMOVE_vdso-note.o = -pg
-CFLAGS_REMOVE_um_vdso.o = -pg
-targets += vdso-syms.lds
-obj-$(VDSO64-y)                 += vdso-syms.lds
-#
-# Match symbols in the DSO that look like VDSO*; produce a file of constants.
-#
-sed-vdsosym := -e 's/^00*/0/' \
-        -e 's/^\([0-9a-fA-F]*\) . \(VDSO[a-zA-Z0-9_]*\)$$/\2 = 0x\1;/p'
-quiet_cmd_vdsosym = VDSOSYM $@
-define cmd_vdsosym
-        $(NM) $< | LC_ALL=C sed -n $(sed-vdsosym) | LC_ALL=C sort > $@
-endef
-$(obj)/%-syms.lds: $(obj)/%.so.dbg FORCE
-        $(call if_changed,vdsosym)
-#
-# The DSO images are built using a special linker script.
-#
-quiet_cmd_vdso = VDSO    $@
-      cmd_vdso = $(CC) -nostdlib -o $@ \
-                       $(VDSO_LDFLAGS) $(VDSO_LDFLAGS_$(filter %.lds,$(^F))) \
-                       -Wl,-T,$(filter %.lds,$^) $(filter %.o,$^) && \
-                 sh $(srctree)/$(src)/checkundef.sh '$(NM)' '$@'
-VDSO_LDFLAGS = -fPIC -shared $(call cc-ldoption, -Wl$(comma)--hash-style=sysv)
-GCOV_PROFILE := n
-#
-# Install the unstripped copy of vdso*.so listed in $(vdso-install-y).
-#
-quiet_cmd_vdso_install = INSTALL $@
-      cmd_vdso_install = cp $(obj)/$@.dbg $(MODLIB)/vdso/$@
-$(vdso-install-y): %.so: $(obj)/%.so.dbg FORCE
-        @mkdir -p $(MODLIB)/vdso
-        $(call cmd,vdso_install)
-PHONY += vdso_install $(vdso-install-y)
-vdso_install: $(vdso-install-y)
diff --git a/arch/um/sys-x86_64/vdso/checkundef.sh b/arch/um/sys-x86_64/vdso/checkundef.sh
deleted file mode 100644
index 7ee90a9b549d..000000000000
--- a/arch/um/sys-x86_64/vdso/checkundef.sh
+++ /dev/null
@@ -1,10 +0,0 @@
-#!/bin/sh
-nm="$1"
-file="$2"
-$nm "$file" | grep '^ *U' > /dev/null 2>&1
-if [ $? -eq 1 ]; then
-    exit 0
-else
-    echo "$file: undefined symbols found" >&2
-    exit 1
-fi
diff --git a/arch/um/sys-x86_64/vdso/um_vdso.c b/arch/um/sys-x86_64/vdso/um_vdso.c
deleted file mode 100644
index 7c441b59d375..000000000000
--- a/arch/um/sys-x86_64/vdso/um_vdso.c
+++ /dev/null
@@ -1,71 +0,0 @@
-/*
- * Copyright (C) 2011 Richard Weinberger <richrd@nod.at>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * This vDSO turns all calls into a syscall so that UML can trap them.
- */
-/* Disable profiling for userspace code */
-#define DISABLE_BRANCH_PROFILING
-#include <linux/time.h>
-#include <linux/getcpu.h>
-#include <asm/unistd.h>
-int __vdso_clock_gettime(clockid_t clock, struct timespec *ts)
-{
-        long ret;
-        asm("syscall" : "=a" (ret) :
-                "0" (__NR_clock_gettime), "D" (clock), "S" (ts) : "memory");
-        return ret;
-}
-int clock_gettime(clockid_t, struct timespec *)
-        __attribute__((weak, alias("__vdso_clock_gettime")));
-int __vdso_gettimeofday(struct timeval *tv, struct timezone *tz)
-{
-        long ret;
-        asm("syscall" : "=a" (ret) :
-                "0" (__NR_gettimeofday), "D" (tv), "S" (tz) : "memory");
-        return ret;
-}
-int gettimeofday(struct timeval *, struct timezone *)
-        __attribute__((weak, alias("__vdso_gettimeofday")));
-time_t __vdso_time(time_t *t)
-{
-        long secs;
-        asm volatile("syscall"
-                : "=a" (secs)
-                : "0" (__NR_time), "D" (t) : "cc", "r11", "cx", "memory");
-        return secs;
-}
-int time(time_t *t) __attribute__((weak, alias("__vdso_time")));
-long
-__vdso_getcpu(unsigned *cpu, unsigned *node, struct getcpu_cache *unused)
-{
-        /*
-         * UML does not support SMP, we can cheat here. :)
-         */
-        if (cpu)
-                *cpu = 0;
-        if (node)
-                *node = 0;
-        return 0;
-}
-long getcpu(unsigned *cpu, unsigned *node, struct getcpu_cache *tcache)
-        __attribute__((weak, alias("__vdso_getcpu")));
diff --git a/arch/um/sys-x86_64/vdso/vdso-layout.lds.S b/arch/um/sys-x86_64/vdso/vdso-layout.lds.S
deleted file mode 100644
index 634a2cf62046..000000000000
--- a/arch/um/sys-x86_64/vdso/vdso-layout.lds.S
+++ /dev/null
@@ -1,64 +0,0 @@
-/*
- * Linker script for vDSO.  This is an ELF shared object prelinked to
- * its virtual address, and with only one read-only segment.
- * This script controls its layout.
- */
-SECTIONS
-{
-        . = VDSO_PRELINK + SIZEOF_HEADERS;
-        .hash           : { *(.hash) }                  :text
-        .gnu.hash       : { *(.gnu.hash) }
-        .dynsym         : { *(.dynsym) }
-        .dynstr         : { *(.dynstr) }
-        .gnu.version    : { *(.gnu.version) }
-        .gnu.version_d  : { *(.gnu.version_d) }
-        .gnu.version_r  : { *(.gnu.version_r) }
-        .note           : { *(.note.*) }                :text   :note
-        .eh_frame_hdr   : { *(.eh_frame_hdr) }          :text   :eh_frame_hdr
-        .eh_frame       : { KEEP (*(.eh_frame)) }       :text
-        .dynamic        : { *(.dynamic) }               :text   :dynamic
-        .rodata         : { *(.rodata*) }               :text
-        .data           : {
-              *(.data*)
-              *(.sdata*)
-              *(.got.plt) *(.got)
-              *(.gnu.linkonce.d.*)
-              *(.bss*)
-              *(.dynbss*)
-              *(.gnu.linkonce.b.*)
-        }
-        .altinstructions        : { *(.altinstructions) }
-        .altinstr_replacement   : { *(.altinstr_replacement) }
-        /*
-         * Align the actual code well away from the non-instruction data.
-         * This is the best thing for the I-cache.
-         */
-        . = ALIGN(0x100);
-        .text           : { *(.text*) }                 :text   =0x90909090
-}
-/*
- * Very old versions of ld do not recognize this name token; use the constant.
- */
-#define PT_GNU_EH_FRAME 0x6474e550
-/*
- * We must supply the ELF program headers explicitly to get just one
- * PT_LOAD segment, and set the flags explicitly to make segments read-only.
- */
-PHDRS
-{
-        text            PT_LOAD         FLAGS(5) FILEHDR PHDRS; /* PF_R|PF_X */
-        dynamic         PT_DYNAMIC      FLAGS(4);               /* PF_R */
-        note            PT_NOTE         FLAGS(4);               /* PF_R */
-        eh_frame_hdr    PT_GNU_EH_FRAME;
-}
diff --git a/arch/um/sys-x86_64/vdso/vdso-note.S b/arch/um/sys-x86_64/vdso/vdso-note.S
deleted file mode 100644
index 79a071e4357e..000000000000
--- a/arch/um/sys-x86_64/vdso/vdso-note.S
+++ /dev/null
@@ -1,12 +0,0 @@
-/*
- * This supplies .note.* sections to go into the PT_NOTE inside the vDSO text.
- * Here we can supply some information useful to userland.
- */
-#include <linux/uts.h>
-#include <linux/version.h>
-#include <linux/elfnote.h>
-ELFNOTE_START(Linux, 0, "a")
-        .long LINUX_VERSION_CODE
-ELFNOTE_END
diff --git a/arch/um/sys-x86_64/vdso/vdso.S b/arch/um/sys-x86_64/vdso/vdso.S
deleted file mode 100644
index ec82c1686bd6..000000000000
--- a/arch/um/sys-x86_64/vdso/vdso.S
+++ /dev/null
@@ -1,10 +0,0 @@
-#include <linux/init.h>
-__INITDATA
-        .globl vdso_start, vdso_end
-vdso_start:
-        .incbin "arch/um/sys-x86_64/vdso/vdso.so"
-vdso_end:
-__FINIT
diff --git a/arch/um/sys-x86_64/vdso/vdso.lds.S b/arch/um/sys-x86_64/vdso/vdso.lds.S
deleted file mode 100644
index b96b2677cad8..000000000000
--- a/arch/um/sys-x86_64/vdso/vdso.lds.S
+++ /dev/null
@@ -1,32 +0,0 @@
-/*
- * Linker script for 64-bit vDSO.
- * We #include the file to define the layout details.
- * Here we only choose the prelinked virtual address.
- *
- * This file defines the version script giving the user-exported symbols in
- * the DSO.  We can define local symbols here called VDSO* to make their
- * values visible using the asm-x86/vdso.h macros from the kernel proper.
- */
-#define VDSO_PRELINK 0xffffffffff700000
-#include "vdso-layout.lds.S"
-/*
- * This controls what userland symbols we export from the vDSO.
- */
-VERSION {
-        LINUX_2.6 {
-        global:
-                clock_gettime;
-                __vdso_clock_gettime;
-                gettimeofday;
-                __vdso_gettimeofday;
-                getcpu;
-                __vdso_getcpu;
-                time;
-                __vdso_time;
-        local: *;
-        };
-}
-VDSO64_PRELINK = VDSO_PRELINK;
diff --git a/arch/um/sys-x86_64/vdso/vma.c b/arch/um/sys-x86_64/vdso/vma.c
deleted file mode 100644
index 9495c8d0ce37..000000000000
--- a/arch/um/sys-x86_64/vdso/vma.c
+++ /dev/null
@@ -1,74 +0,0 @@
-/*
- * Copyright (C) 2011 Richard Weinberger <richrd@nod.at>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-#include <linux/slab.h>
-#include <linux/sched.h>
-#include <linux/mm.h>
-#include <asm/page.h>
-#include <linux/init.h>
-unsigned int __read_mostly vdso_enabled = 1;
-unsigned long um_vdso_addr;
-extern unsigned long task_size;
-extern char vdso_start[], vdso_end[];
-static struct page **vdsop;
-static int __init init_vdso(void)
-{
-        struct page *um_vdso;
-        BUG_ON(vdso_end - vdso_start > PAGE_SIZE);
-        um_vdso_addr = task_size - PAGE_SIZE;
-        vdsop = kmalloc(GFP_KERNEL, sizeof(struct page *));
-        if (!vdsop)
-                goto oom;
-        um_vdso = alloc_page(GFP_KERNEL);
-        if (!um_vdso) {
-                kfree(vdsop);
-                goto oom;
-        }
-        copy_page(page_address(um_vdso), vdso_start);
-        *vdsop = um_vdso;
-        return 0;
-oom:
-        printk(KERN_ERR "Cannot allocate vdso\n");
-        vdso_enabled = 0;
-        return -ENOMEM;
-}
-subsys_initcall(init_vdso);
-int arch_setup_additional_pages(struct linux_binprm *bprm, int uses_interp)
-{
-        int err;
-        struct mm_struct *mm = current->mm;
-        if (!vdso_enabled)
-                return 0;
-        down_write(&mm->mmap_sem);
-        err = install_special_mapping(mm, um_vdso_addr, PAGE_SIZE,
-                VM_READ|VM_EXEC|
-                VM_MAYREAD|VM_MAYWRITE|VM_MAYEXEC|
-                VM_ALWAYSDUMP,
-                vdsop);
-        up_write(&mm->mmap_sem);
-        return err;
-}