From: Fenghua Yu <fenghua.yu@intel.com>
Date: Tue, 17 May 2011 22:29:17 +0000 (-0700)
Subject: x86, mem: memmove_64.S: Optimize memmove by enhanced REP MOVSB/STOSB
X-Git-Tag: v3.0-rc1~404^2~5^2~2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=057e05c1d6440117875f455e59da8691e08f65d5;p=pandora-kernel.git

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>
---

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