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(parent: 2494b03) | patch
x86, cpufeature: Add CPU feature bit for enhanced REP MOVSB/STOSB
authorFenghua Yu <fenghua.yu@intel.com>
Tue, 17 May 2011 22:29:10 +0000 (15:29 -0700)
committerH. Peter Anvin <hpa@linux.intel.com>
Tue, 17 May 2011 21:56:36 +0000 (14:56 -0700)
commit724a92ee45c04cb9d82884a856b03b1e594d9de1
tree91908bf1d4ad3cab198501228b447c940ad19d61tree | snapshot (tar.gz zip)
parent2494b030ba9334c7dd7df9b9f7abe4eacc950ec5commit | diff
x86, cpufeature: Add CPU feature bit for enhanced REP MOVSB/STOSB

Intel processors are adding enhancements to REP MOVSB/STOSB and the use of
REP MOVSB/STOSB for optimal memcpy/memset or similar functions is recommended.
Enhancement availability is indicated by CPUID.7.0.EBX[9] (Enhanced REP MOVSB/
STOSB).

Signed-off-by: Fenghua Yu <fenghua.yu@intel.com>
Link: http://lkml.kernel.org/r/1305671358-14478-2-git-send-email-fenghua.yu@intel.com
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
arch/x86/include/asm/cpufeature.h diff | blob | blame | history