7 files changed, 8 insertions, 66 deletions

diff --git a/arch/x86/um/Kconfig b/arch/x86/um/Kconfig
index 53c90fd412d1..14ef8d1dbc33 100644
--- a/arch/x86/um/Kconfig
+++ b/arch/x86/um/Kconfig
@@ -13,7 +13,6 @@ endmenu
 config UML_X86
         def_bool y
         select GENERIC_FIND_FIRST_BIT
-        select GENERIC_SIGALTSTACK
 
 config 64BIT
         bool "64-bit kernel" if SUBARCH = "x86"
@@ -25,6 +24,8 @@ config X86_32
         select ARCH_WANT_IPC_PARSE_VERSION
         select MODULES_USE_ELF_REL
         select CLONE_BACKWARDS
+        select OLD_SIGSUSPEND3
+        select OLD_SIGACTION
 
 config X86_64
         def_bool 64BIT
@@ -37,9 +38,8 @@ config RWSEM_GENERIC_SPINLOCK
         def_bool !RWSEM_XCHGADD_ALGORITHM
 
 config 3_LEVEL_PGTABLES
-        bool "Three-level pagetables (EXPERIMENTAL)" if !64BIT
+        bool "Three-level pagetables" 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
diff --git a/arch/x86/um/Makefile b/arch/x86/um/Makefile
index 5d065b2222d3..eafa324eb7a5 100644
--- a/arch/x86/um/Makefile
+++ b/arch/x86/um/Makefile
@@ -10,7 +10,7 @@ endif
 
 obj-y = bug.o bugs_$(BITS).o delay.o fault.o ksyms.o ldt.o \
         ptrace_$(BITS).o ptrace_user.o setjmp_$(BITS).o signal.o \
-        stub_$(BITS).o stub_segv.o syscalls_$(BITS).o \
+        stub_$(BITS).o stub_segv.o \
         sys_call_table_$(BITS).o sysrq_$(BITS).o tls_$(BITS).o \
         mem_$(BITS).o subarch.o os-$(OS)/
 
@@ -25,7 +25,7 @@ subarch-$(CONFIG_HIGHMEM) += ../mm/highmem_32.o
 
 else
 
-obj-y += vdso/
+obj-y += syscalls_64.o vdso/
 
 subarch-y = ../lib/csum-partial_64.o ../lib/memcpy_64.o ../lib/thunk_64.o \
                 ../lib/rwsem.o
diff --git a/arch/x86/um/fault.c b/arch/x86/um/fault.c
index 8784ab30d91b..84ac7f7b0257 100644
--- a/arch/x86/um/fault.c
+++ b/arch/x86/um/fault.c
@@ -20,7 +20,7 @@ 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) {
+        if (fixup) {
                 UPT_IP(regs) = fixup->fixup;
                 return 1;
         }
diff --git a/arch/x86/um/shared/sysdep/syscalls_32.h b/arch/x86/um/shared/sysdep/syscalls_32.h
index 8436079be914..68fd2cf526fd 100644
--- a/arch/x86/um/shared/sysdep/syscalls_32.h
+++ b/arch/x86/um/shared/sysdep/syscalls_32.h
@@ -8,11 +8,6 @@
 
 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) \
diff --git a/arch/x86/um/signal.c b/arch/x86/um/signal.c
index 71cef48ea5cd..ae7319db18ee 100644
--- a/arch/x86/um/signal.c
+++ b/arch/x86/um/signal.c
@@ -464,7 +464,7 @@ int setup_signal_stack_si(unsigned long stack_top, int sig,
         return 0;
 }
 
-long sys_sigreturn(struct pt_regs *regs)
+long sys_sigreturn(void)
 {
         unsigned long sp = PT_REGS_SP(&current->thread.regs);
         struct sigframe __user *frame = (struct sigframe __user *)(sp - 8);
@@ -577,7 +577,7 @@ int setup_signal_stack_si(unsigned long stack_top, int sig,
 }
 #endif
 
-long sys_rt_sigreturn(struct pt_regs *regs)
+long sys_rt_sigreturn(void)
 {
         unsigned long sp = PT_REGS_SP(&current->thread.regs);
         struct rt_sigframe __user *frame =
@@ -601,14 +601,3 @@ long sys_rt_sigreturn(struct pt_regs *regs)
         force_sig(SIGSEGV, current);
         return 0;
 }
-
-#ifdef CONFIG_X86_32
-long ptregs_sigreturn(void)
-{
-        return sys_sigreturn(NULL);
-}
-long ptregs_rt_sigreturn(void)
-{
-        return sys_rt_sigreturn(NULL);
-}
-#endif
diff --git a/arch/x86/um/sys_call_table_32.c b/arch/x86/um/sys_call_table_32.c
index a0c3b0d1a122..531d4269e2e3 100644
--- a/arch/x86/um/sys_call_table_32.c
+++ b/arch/x86/um/sys_call_table_32.c
@@ -24,10 +24,6 @@
 
 #define old_mmap sys_old_mmap
 
-#define ptregs_iopl sys_iopl
-#define ptregs_vm86old sys_vm86old
-#define ptregs_vm86 sys_vm86
-
 #define __SYSCALL_I386(nr, sym, compat) extern asmlinkage void sym(void) ;
 #include <asm/syscalls_32.h>
 
diff --git a/arch/x86/um/syscalls_32.c b/arch/x86/um/syscalls_32.c
deleted file mode 100644
index e8bcea99acdb..000000000000
--- a/arch/x86/um/syscalls_32.c
+++ /dev/null
@@ -1,38 +0,0 @@
-/* 
- * Copyright (C) 2000 - 2003 Jeff Dike (jdike@addtoit.com)
- * Licensed under the GPL
- */
-
-#include <linux/syscalls.h>
-#include <sysdep/syscalls.h>
-
-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) ||
-                    __get_user(new_ka.sa.sa_flags, &act->sa_flags) ||
-                    __get_user(mask, &act->sa_mask))
-                        return -EFAULT;
-                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) ||
-                    __put_user(old_ka.sa.sa_flags, &oact->sa_flags) ||
-                    __put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask))
-                        return -EFAULT;
-        }
-
-        return ret;
-}