From: H. Peter Anvin <hpa@zytor.com>
Date: Fri, 13 Nov 2009 23:28:14 +0000 (-0800)
Subject: x86, sleep: Always save the value of EFER
X-Git-Tag: v2.6.33-rc1~374^2~19
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a7c4c0d934c6cbc58de262d090d4a715445453f0;p=pandora-kernel.git

x86, sleep: Always save the value of EFER

Always save the value of EFER, regardless of the state of NX.  Since
EFER may not actually exist, use rdmsr_safe() to do so.

v2: check the return value from rdmsr_safe() instead of relying on
    the output values being unchanged on error.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Acked-by: Rafael J. Wysocki <rjw@sisk.pl>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Nigel Cunningham <nigel@tuxonice.net>
LKML-Reference: <1258154897-6770-3-git-send-email-hpa@zytor.com>
Acked-by: Kees Cook <kees.cook@canonical.com>
---

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