From: H. Peter Anvin <hpa@zytor.com>
Date: Thu, 10 Dec 2009 00:33:44 +0000 (-0800)
Subject: x86-32: Avoid pipeline serialization in PTREGSCALL1 and 2
X-Git-Tag: v2.6.33-rc1~51^2~2^2~6
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ce9119ad90b1caba550447bfcc0a21850558ca49;p=pandora-kernel.git

x86-32: Avoid pipeline serialization in PTREGSCALL1 and 2

In the PTREGSCALL1 and 2 macros, we can trivially avoid an unnecessary
pipeline serialization, so do so.

In PTREGSCALLS3 this is much less clear-cut since we have to push a
new value to the stack.  Leave it alone for now assuming it is as good
as it is going to be; may want to check on Atom or another in-order
x86 to see if we can do better.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Cc: Brian Gerst <brgerst@gmail.com>
LKML-Reference: <1260403316-5679-2-git-send-email-brgerst@gmail.com>
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