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authorIngo Molnar <mingo@elte.hu>2008-02-01 23:45:18 +0100
committerLinus Torvalds <torvalds@linux-foundation.org>2008-02-02 10:00:26 +1100
commitaa6299926950c8dfe2fea638276cad6def092bc9 (patch)
tree5fe27952926b60302ea43212e8ed6640c444812d
parentf3191248bf1bf6627c04c5624904df45e0a979ed (diff)
downloadlinux-2.6.34-ux500-aa6299926950c8dfe2fea638276cad6def092bc9.tar.gz
x86: fix bootup crash in native_read_tsc()
fix bootup crash in native_read_tsc() that was reported on an Athlon-XP and bisected. The correct feature boundary for X86_FEATURE_MFENCE_RDTSC is not XMM but XMM2. Signed-off-by: Ingo Molnar <mingo@elte.hu> Acked-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--arch/x86/kernel/cpu/amd.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/kernel/cpu/amd.c b/arch/x86/kernel/cpu/amd.c
index 06fa159232f..693e353999c 100644
--- a/arch/x86/kernel/cpu/amd.c
+++ b/arch/x86/kernel/cpu/amd.c
@@ -304,7 +304,7 @@ static void __cpuinit init_amd(struct cpuinfo_x86 *c)
if (c->x86 < 6)
clear_bit(X86_FEATURE_MCE, c->x86_capability);
- if (cpu_has_xmm)
+ if (cpu_has_xmm2)
set_bit(X86_FEATURE_MFENCE_RDTSC, c->x86_capability);
}