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(parent: 724a92e) | patch
x86, mem, intel: Initialize Enhanced REP MOVSB/STOSB
authorFenghua Yu <fenghua.yu@intel.com>
Tue, 17 May 2011 22:29:11 +0000 (15:29 -0700)
committerH. Peter Anvin <hpa@linux.intel.com>
Tue, 17 May 2011 22:40:23 +0000 (15:40 -0700)
commit161ec53c702ce9df2f439804dfb9331807066daa
treefbaaea8612b8f5482a2fa7f8e826eea8b5baf57ftree | snapshot (tar.gz zip)
parent724a92ee45c04cb9d82884a856b03b1e594d9de1commit | diff
x86, mem, intel: Initialize Enhanced REP MOVSB/STOSB

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>
arch/x86/kernel/cpu/intel.c diff | blob | blame | history