From e05aff854c9f348629bb66c191eee87e4d002900 Mon Sep 17 00:00:00 2001 From: Andi Kleen Date: Sun, 22 Jul 2007 11:12:40 +0200 Subject: [PATCH] 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 Signed-off-by: Linus Torvalds --- include/asm-i386/cmpxchg.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/asm-i386/cmpxchg.h b/include/asm-i386/cmpxchg.h index 64dcdf46117b..f86ede28f6dc 100644 --- a/include/asm-i386/cmpxchg.h +++ b/include/asm-i386/cmpxchg.h @@ -34,7 +34,7 @@ static inline void __set_64bit (unsigned long long * ptr, "\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), -- 2.20.1