commit e05aff854c9f348629bb66c191eee87e4d002900
author Andi Kleen <ak@suse.de> Sun Jul 22 11:12:40 2007 +0200
committer Linus Torvalds <torvalds@woody.linux-foundation.org> Sun Jul 22 11:03:38 2007 -0700
tree 11913da94cce3ac1bc478f1d2916dd573f56fac5
parent 57c22f49e4c7d27a03e109a317c30b12f1bae0b2

i386: Use patchable lock prefix in set_64bit

Previously lock was unconditionally used, but shouldn't be needed on
UP systems.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

include/asm-i386/cmpxchg.h

diff --git a/include/asm-i386/cmpxchg.h b/include/asm-i386/cmpxchg.h
index 64dcdf4..f86ede2 100644
--- a/include/asm-i386/cmpxchg.h
+++ b/include/asm-i386/cmpxchg.h
@@ -34,7 +34,7 @@
 		"\n1:\t"
 		"movl (%0), %%eax\n\t"
 		"movl 4(%0), %%edx\n\t"
-		"lock cmpxchg8b (%0)\n\t"
+		LOCK_PREFIX "cmpxchg8b (%0)\n\t"
 		"jnz 1b"
 		: /* no outputs */
 		:	"D"(ptr),