8306de2ebe31252b730170e33bd62ed18ccdb
parent 101068c1f4a947ffa08f2782c78e40097300754d
author Fenghua Yu <fenghua.yu@intel.com> 1305671357 -0700
committer H. Peter Anvin <hpa@linux.intel.com> 1305672030 -0700

x86, mem: memmove_64.S: Optimize memmove by enhanced REP MOVSB/STOSB

Support memmove() by enhanced rep movsb. On processors supporting enhanced
REP MOVSB/STOSB, the alternative memmove() function using enhanced rep movsb
overrides the original function.

The patch doesn't change the backward memmove case to use enhanced rep
movsb.

Signed-off-by: Fenghua Yu <fenghua.yu@intel.com>
Link: http://lkml.kernel.org/r/1305671358-14478-9-git-send-email-fenghua.yu@intel.com
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>