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[PATCH] Use string instructions for Core2 copy/clear

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It is faster than using a unrolled loop for the use cases the kernel
cares about (cached, sizes typically < 4K)

Signed-off-by: Andi Kleen <ak@suse.de>
This commit is contained in:
Andi Kleen 2006-09-26 10:52:41 +02:00 committed by Andi Kleen
parent 35d534a3ff
commit 27fbe5b28a
1 changed files with 2 additions and 0 deletions
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2
arch/x86_64/kernel/setup.c
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@ -843,6 +843,8 @@ static void __cpuinit init_intel(struct cpuinfo_x86 *c)
if ((c->x86 == 0xf && c->x86_model >= 0x03) ||
(c->x86 == 0x6 && c->x86_model >= 0x0e))
set_bit(X86_FEATURE_CONSTANT_TSC, &c->x86_capability);
if (c->x86 == 6)
set_bit(X86_FEATURE_REP_GOOD, &c->x86_capability);
set_bit(X86_FEATURE_SYNC_RDTSC, &c->x86_capability);
c->x86_max_cores = intel_num_cpu_cores(c);