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x86: lfence fix
author
Ingo Molnar
<mingo@elte.hu>
Wed, 30 Jan 2008 12:32:38 +0000
(13:32 +0100)
committer
Ingo Molnar
<mingo@elte.hu>
Wed, 30 Jan 2008 12:32:38 +0000
(13:32 +0100)
LFENCE is available on XMM2 or higher Intel CPUs - not XMM or higher...
this caused boot failures on XMM1 & !XMM1 capable CPUs.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
arch/x86/kernel/cpu/intel.c
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diff --git
a/arch/x86/kernel/cpu/intel.c
b/arch/x86/kernel/cpu/intel.c
index
0a4abdb
..
5731de3
100644
(file)
--- a/
arch/x86/kernel/cpu/intel.c
+++ b/
arch/x86/kernel/cpu/intel.c
@@
-203,7
+203,7
@@
static void __cpuinit init_intel(struct cpuinfo_x86 *c)
}
#endif
- if (cpu_has_xmm)
+ if (cpu_has_xmm
2
)
set_bit(X86_FEATURE_LFENCE_RDTSC, c->x86_capability);
if (c->x86 == 15) {
set_bit(X86_FEATURE_P4, c->x86_capability);