From: Borislav Petkov <bp@suse.de>
Date: Tue, 19 Feb 2013 18:33:12 +0000 (+0100)
Subject: x86, cpu, amd: Fix WC+ workaround for older virtual hosts
X-Git-Tag: v3.9-rc1~109^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=52d3d06e706bdde3d6c5c386deb065c3b4c51618;p=pandora-kernel.git

x86, cpu, amd: Fix WC+ workaround for older virtual hosts

The WC+ workaround for F10h introduces a new MSR and kvm host #GPs
on accesses to unknown MSRs if paravirt is not compiled in. Use the
exception-handling MSR accessors so as not to break 3.8 and later guests
booting on older hosts.

Remove a redundant family check while at it.

Cc: Gleb Natapov <gleb@redhat.com>
Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: http://lkml.kernel.org/r/1361298793-31834-1-git-send-email-bp@alien8.de
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
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