x86, mem, intel: Initialize Enhanced REP MOVSB/STOSB

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If kernel intends to use enhanced REP MOVSB/STOSB, it must ensure
IA32_MISC_ENABLE.Fast_String_Enable (bit 0) is set and CPUID.(EAX=07H, ECX=0H):
EBX[bit 9] also reports 1.

Signed-off-by: Fenghua Yu <fenghua.yu@intel.com>
Link: http://lkml.kernel.org/r/1305671358-14478-3-git-send-email-fenghua.yu@intel.com
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>

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Fenghua Yu 2011-05-17 15:29:11 -07:00 • committed by H. Peter Anvin

parent 724a92ee45

commit 161ec53c70

1 changed files with 15 additions and 4 deletions

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arch/x86/kernel/cpu/intel.c

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