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Commit aa629992 authored by Ingo Molnar's avatar Ingo Molnar Committed by Linus Torvalds
Browse files

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: default avatarIngo Molnar <mingo@elte.hu>
Acked-by: default avatarH. Peter Anvin <hpa@zytor.com>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent f3191248

arch/x86/kernel/cpu/amd.c

+1 −1
Original line number Diff line number Diff line
@@ -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);

}