[PATCH 04/10] x86-32: allow UP/SMP lock replacement in cmpxchg64
From: Luca Barbieri
Date: Wed Feb 17 2010 - 06:44:28 EST
Use the functionality just introduced in the previous patch.
---
arch/x86/include/asm/cmpxchg_32.h | 3 ++-
1 files changed, 2 insertions(+), 1 deletions(-)
diff --git a/arch/x86/include/asm/cmpxchg_32.h b/arch/x86/include/asm/cmpxchg_32.h
index ffb9bb6..3c267e0 100644
--- a/arch/x86/include/asm/cmpxchg_32.h
+++ b/arch/x86/include/asm/cmpxchg_32.h
@@ -271,7 +271,8 @@ extern unsigned long long cmpxchg_486_u64(volatile void *, u64, u64);
__typeof__(*(ptr)) __ret; \
__typeof__(*(ptr)) __old = (o); \
__typeof__(*(ptr)) __new = (n); \
- alternative_io("call cmpxchg8b_emu", \
+ alternative_io(LOCK_PREFIX_ALTERNATIVE_PATCH \
+ "call cmpxchg8b_emu", \
"lock; cmpxchg8b (%%esi)" , \
X86_FEATURE_CX8, \
"=A" (__ret), \
--
1.6.6.1.476.g01ddb
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