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>
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@ -304,7 +304,7 @@ static void __cpuinit init_amd(struct cpuinfo_x86 *c)
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if (c->x86 < 6)
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clear_bit(X86_FEATURE_MCE, c->x86_capability);
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if (cpu_has_xmm)
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if (cpu_has_xmm2)
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set_bit(X86_FEATURE_MFENCE_RDTSC, c->x86_capability);
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}
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