From: Avi Kivity <avi@redhat.com>
Date: Mon, 30 May 2011 12:23:57 +0000 (-0400)
Subject: x86: Fix mwait_play_dead() faulting on mwait-incapable cpus
X-Git-Tag: v3.0-rc2~25^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4f3c125c7420c85eaff627145557e392a871922d;p=pandora-kernel.git

x86: Fix mwait_play_dead() faulting on mwait-incapable cpus

A logic error in mwait_play_dead() causes the kernel to use
mwait even on cpus which don't support it, such as KVM virtual
cpus.

Introduced by:

  349c004e3d31: x86: A fast way to check capabilities of the current cpu

Fixes: https://bugzilla.kernel.org/show_bug.cgi?id=36222
Reported-by: Török Edwin <edwintorok@gmail.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
Cc: Christoph Lameter <cl@linux.com>
Cc: Tejun Heo <tj@kernel.org>
Link: http://lkml.kernel.org/r/1306758237-9327-1-git-send-email-avi@redhat.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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