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(parent: 4307bec) | patch
x86, mem: memcpy_64.S: Optimize memcpy by enhanced REP MOVSB/STOSB
authorFenghua Yu <fenghua.yu@intel.com>
Tue, 17 May 2011 22:29:16 +0000 (15:29 -0700)
committerH. Peter Anvin <hpa@linux.intel.com>
Tue, 17 May 2011 22:40:29 +0000 (15:40 -0700)
commit101068c1f4a947ffa08f2782c78e40097300754d
treea26eccfb8a85801ef337efe238a47cf48a522022tree | snapshot (tar.gz zip)
parent4307bec9344aed83f8107c3eb4285bd9d218fc10commit | diff
x86, mem: memcpy_64.S: Optimize memcpy by enhanced REP MOVSB/STOSB

Support memcpy() with enhanced rep movsb. On processors supporting enhanced
rep movsb, the alternative memcpy() function using enhanced rep movsb overrides the original function and the fast string
function.

Signed-off-by: Fenghua Yu <fenghua.yu@intel.com>
Link: http://lkml.kernel.org/r/1305671358-14478-8-git-send-email-fenghua.yu@intel.com
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
arch/x86/lib/memcpy_64.S diff | blob | blame | history