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| author | Keir Fraser <keir@xen.org> | 2010-12-16 18:46:55 +0000 |
|---|---|---|
| committer | Keir Fraser <keir@xen.org> | 2010-12-16 18:46:55 +0000 |
| commit | 165e3aba7c1754d159099a6adf89e54f33090ea5 (patch) | |
| tree | 097f5d1eca29b55b95f4555fe4ec9f3536ba3a7b /xen/include/asm-x86/system.h | |
| parent | ab134ffcc5ca8edc3678aa1429e281e47c42462d (diff) | |
| download | xen-165e3aba7c1754d159099a6adf89e54f33090ea5.tar.gz xen-165e3aba7c1754d159099a6adf89e54f33090ea5.tar.bz2 xen-165e3aba7c1754d159099a6adf89e54f33090ea5.zip | |
x86: Remove unnecessary LOCK/LOCK_PREFIX macros.
We don't support !CONFIG_SMP.
Signed-off-by: Keir Fraser <keir@xen.org>
Diffstat (limited to 'xen/include/asm-x86/system.h')
| -rw-r--r-- | xen/include/asm-x86/system.h | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/xen/include/asm-x86/system.h b/xen/include/asm-x86/system.h index 52816da1c9..a57d35de81 100644 --- a/xen/include/asm-x86/system.h +++ b/xen/include/asm-x86/system.h @@ -91,14 +91,14 @@ static always_inline unsigned long __cmpxchg( switch ( size ) { case 1: - asm volatile ( LOCK_PREFIX "cmpxchgb %b1,%2" + asm volatile ( "lock; cmpxchgb %b1,%2" : "=a" (prev) : "q" (new), "m" (*__xg((volatile void *)ptr)), "0" (old) : "memory" ); return prev; case 2: - asm volatile ( LOCK_PREFIX "cmpxchgw %w1,%2" + asm volatile ( "lock; cmpxchgw %w1,%2" : "=a" (prev) : "r" (new), "m" (*__xg((volatile void *)ptr)), "0" (old) @@ -106,7 +106,7 @@ static always_inline unsigned long __cmpxchg( return prev; #if defined(__i386__) case 4: - asm volatile ( LOCK_PREFIX "cmpxchgl %1,%2" + asm volatile ( "lock; cmpxchgl %1,%2" : "=a" (prev) : "r" (new), "m" (*__xg((volatile void *)ptr)), "0" (old) @@ -114,14 +114,14 @@ static always_inline unsigned long __cmpxchg( return prev; #elif defined(__x86_64__) case 4: - asm volatile ( LOCK_PREFIX "cmpxchgl %k1,%2" + asm volatile ( "lock; cmpxchgl %k1,%2" : "=a" (prev) : "r" (new), "m" (*__xg((volatile void *)ptr)), "0" (old) : "memory" ); return prev; case 8: - asm volatile ( LOCK_PREFIX "cmpxchgq %1,%2" + asm volatile ( "lock; cmpxchgq %1,%2" : "=a" (prev) : "r" (new), "m" (*__xg((volatile void *)ptr)), "0" (old) |