7 files changed, 6 insertions, 124 deletions

diff --git a/arch/um/kernel/irq.c b/arch/um/kernel/irq.c
index dcd814971995..bbf94bf2921e 100644
--- a/arch/um/kernel/irq.c
+++ b/arch/um/kernel/irq.c
@@ -9,7 +9,6 @@
 #include "linux/kernel.h"
 #include "linux/module.h"
 #include "linux/smp.h"
-#include "linux/irq.h"
 #include "linux/kernel_stat.h"
 #include "linux/interrupt.h"
 #include "linux/random.h"
diff --git a/arch/um/kernel/skas/Makefile b/arch/um/kernel/skas/Makefile
index db36c7c95940..8de471b59c1c 100644
--- a/arch/um/kernel/skas/Makefile
+++ b/arch/um/kernel/skas/Makefile
@@ -6,8 +6,6 @@
 obj-y := clone.o exec_kern.o mem.o mem_user.o mmu.o process.o process_kern.o \
         syscall.o tlb.o trap_user.o uaccess.o
 
-subdir- := util
-
 USER_OBJS := process.o clone.o
 
 include arch/um/scripts/Makefile.rules
diff --git a/arch/um/kernel/skas/util/Makefile b/arch/um/kernel/skas/util/Makefile
deleted file mode 100644
index f7b7eba83340..000000000000
--- a/arch/um/kernel/skas/util/Makefile
+++ /dev/null
@@ -1,5 +0,0 @@
-hostprogs-y             := mk_ptregs
-always                  := $(hostprogs-y)
-
-mk_ptregs-objs := mk_ptregs-$(SUBARCH).o
-HOSTCFLAGS_mk_ptregs-$(SUBARCH).o := -I$(objtree)/arch/um
diff --git a/arch/um/kernel/skas/util/mk_ptregs-i386.c b/arch/um/kernel/skas/util/mk_ptregs-i386.c
deleted file mode 100644
index 1f96e1eeb8a7..000000000000
--- a/arch/um/kernel/skas/util/mk_ptregs-i386.c
+++ /dev/null
@@ -1,49 +0,0 @@
-#include <stdio.h>
-#include <user-offsets.h>
-
-#define SHOW(name) printf("#define %s %d\n", #name, name)
-
-int main(int argc, char **argv)
-{
-        printf("/* Automatically generated by "
-               "arch/um/kernel/skas/util/mk_ptregs */\n");
-        printf("\n");
-        printf("#ifndef __SKAS_PT_REGS_\n");
-        printf("#define __SKAS_PT_REGS_\n");
-        printf("\n");
-        SHOW(HOST_FRAME_SIZE);
-        SHOW(HOST_FP_SIZE);
-        SHOW(HOST_XFP_SIZE);
-
-        SHOW(HOST_IP);
-        SHOW(HOST_SP);
-        SHOW(HOST_EFLAGS);
-        SHOW(HOST_EAX);
-        SHOW(HOST_EBX);
-        SHOW(HOST_ECX);
-        SHOW(HOST_EDX);
-        SHOW(HOST_ESI);
-        SHOW(HOST_EDI);
-        SHOW(HOST_EBP);
-        SHOW(HOST_CS);
-        SHOW(HOST_SS);
-        SHOW(HOST_DS);
-        SHOW(HOST_FS);
-        SHOW(HOST_ES);
-        SHOW(HOST_GS);
-
-        printf("\n");
-        printf("#endif\n");
-        return(0);
-}
-
-/*
- * Overrides for Emacs so that we follow Linus's tabbing style.
- * Emacs will notice this stuff at the end of the file and automatically
- * adjust the settings for this buffer only.  This must remain at the end
- * of the file.
- * ---------------------------------------------------------------------------
- * Local variables:
- * c-file-style: "linux"
- * End:
- */
diff --git a/arch/um/kernel/skas/util/mk_ptregs-x86_64.c b/arch/um/kernel/skas/util/mk_ptregs-x86_64.c
deleted file mode 100644
index 5fccbfe35f78..000000000000
--- a/arch/um/kernel/skas/util/mk_ptregs-x86_64.c
+++ /dev/null
@@ -1,66 +0,0 @@
-/*
- * Copyright 2003 PathScale, Inc.
- *
- * Licensed under the GPL
- */
-
-#include <stdio.h>
-#include <user-offsets.h>
-
-#define SHOW(name) \
-        printf("#define %s (%d / sizeof(unsigned long))\n", #name, name)
-
-int main(int argc, char **argv)
-{
-        printf("/* Automatically generated by "
-               "arch/um/kernel/skas/util/mk_ptregs */\n");
-        printf("\n");
-        printf("#ifndef __SKAS_PT_REGS_\n");
-        printf("#define __SKAS_PT_REGS_\n");
-        SHOW(HOST_FRAME_SIZE);
-        SHOW(HOST_RBX);
-        SHOW(HOST_RCX);
-        SHOW(HOST_RDI);
-        SHOW(HOST_RSI);
-        SHOW(HOST_RDX);
-        SHOW(HOST_RBP);
-        SHOW(HOST_RAX);
-        SHOW(HOST_R8);
-        SHOW(HOST_R9);
-        SHOW(HOST_R10);
-        SHOW(HOST_R11);
-        SHOW(HOST_R12);
-        SHOW(HOST_R13);
-        SHOW(HOST_R14);
-        SHOW(HOST_R15);
-        SHOW(HOST_ORIG_RAX);
-        SHOW(HOST_CS);
-        SHOW(HOST_SS);
-        SHOW(HOST_EFLAGS);
-#if 0
-        SHOW(HOST_FS);
-        SHOW(HOST_GS);
-        SHOW(HOST_DS);
-        SHOW(HOST_ES);
-#endif
-
-        SHOW(HOST_IP);
-        SHOW(HOST_SP);
-        printf("#define HOST_FP_SIZE 0\n");
-        printf("#define HOST_XFP_SIZE 0\n");
-        printf("\n");
-        printf("\n");
-        printf("#endif\n");
-        return(0);
-}
-
-/*
- * Overrides for Emacs so that we follow Linus's tabbing style.
- * Emacs will notice this stuff at the end of the file and automatically
- * adjust the settings for this buffer only.  This must remain at the end
- * of the file.
- * ---------------------------------------------------------------------------
- * Local variables:
- * c-file-style: "linux"
- * End:
- */
diff --git a/arch/um/kernel/trap_kern.c b/arch/um/kernel/trap_kern.c
index d297429ac360..95c8f8733baf 100644
--- a/arch/um/kernel/trap_kern.c
+++ b/arch/um/kernel/trap_kern.c
@@ -26,6 +26,9 @@
 #include "mconsole_kern.h"
 #include "mem.h"
 #include "mem_kern.h"
+#ifdef CONFIG_MODE_SKAS
+#include "skas.h"
+#endif
 
 /* Note this is constrained to return 0, -EFAULT, -EACCESS, -ENOMEM by segv(). */
 int handle_page_fault(unsigned long address, unsigned long ip, 
@@ -134,7 +137,7 @@ unsigned long segv(struct faultinfo fi, unsigned long ip, int is_user, void *sc)
         else if(current->mm == NULL)
                 panic("Segfault with no mm");
 
-        if (SEGV_IS_FIXABLE(&fi))
+        if (SEGV_IS_FIXABLE(&fi) || SEGV_MAYBE_FIXABLE(&fi))
                 err = handle_page_fault(address, ip, is_write, is_user, &si.si_code);
         else {
                 err = -EFAULT;
diff --git a/arch/um/kernel/um_arch.c b/arch/um/kernel/um_arch.c
index f0a275947d34..93dc782dc1cc 100644
--- a/arch/um/kernel/um_arch.c
+++ b/arch/um/kernel/um_arch.c
@@ -334,6 +334,8 @@ int linux_main(int argc, char **argv)
                 add_arg(DEFAULT_COMMAND_LINE);
 
         os_early_checks();
+        if (force_tt)
+                clear_can_do_skas();
         mode_tt = force_tt ? 1 : !can_do_skas();
 #ifndef CONFIG_MODE_TT
         if (mode_tt) {