[PATCH] uml: add missing __volatile__

We were missing __volatile__ on some bits of asm in the segfault handlers.
On x86_64, this was messing up the move from %rdx to uc because that was
moved to after the GET_FAULTINFO_FROM_SC, which changed %rdx.

Also changed the other bit of asm and the one in the i386 handler to
prevent any similar occurrences.

Signed-off-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 2 insertions, 2 deletions

diff --git a/arch/um/sys-i386/stub_segv.c b/arch/um/sys-i386/stub_segv.c
index a37f672ec964..2355dc19c46c 100644
--- a/arch/um/sys-i386/stub_segv.c
+++ b/arch/um/sys-i386/stub_segv.c
@@ -27,6 +27,6 @@ stub_segv_handler(int sig)
          * the stack in its original form when we do the sigreturn here, by
          * hand.
          */
-        __asm__("mov %0,%%esp ; movl %1, %%eax ; "
-                "int $0x80" : : "a" (sc), "g" (__NR_sigreturn));
+        __asm__ __volatile__("mov %0,%%esp ; movl %1, %%eax ; "
+                             "int $0x80" : : "a" (sc), "g" (__NR_sigreturn));
 }