From: Brian Gerst <brgerst@gmail.com>
Date: Tue, 27 Jan 2009 03:56:48 +0000 (+0900)
Subject: x86: remove extra barriers from load_gs_base()
X-Git-Tag: v2.6.30-rc1~2^2~50^2~52^2~3
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1825b8edc2034c012ae48f797d74efd1bd9d4f72;p=pandora-kernel.git

x86: remove extra barriers from load_gs_base()

Impact: optimization

mb() generates an mfence instruction, which is not needed here.  Only
a compiler barrier is needed, and that is handled by the memory clobber
in the wrmsrl function.

Signed-off-by: Brian Gerst <brgerst@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
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