From: Jan Beulich <JBeulich@novell.com>
Date: Sun, 30 Oct 2005 22:59:27 +0000 (-0800)
Subject: [PATCH] x86: cmpxchg improvements
X-Git-Tag: v2.6.15-rc1~59^2~15^2~174
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8896fab35e62aa748a5ce62ac773508e51f10be1;p=pandora-kernel.git

[PATCH] x86: cmpxchg improvements

This adjusts i386's cmpxchg patterns so that

- for word and long cmpxchg-es the compiler can utilize all possible
  registers

- cmpxchg8b gets disabled when the minimum specified hardware architectur
  doesn't support it (like was already happening for the byte, word, and
  long ones).

Signed-off-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

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