From: Rafael J. Wysocki <rjw@sisk.pl>
Date: Mon, 9 Jun 2008 22:10:48 +0000 (+0200)
Subject: x86, gart: add resume handling
X-Git-Tag: v2.6.27-rc1~1106^2~251^10~5
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6703f6d10dcd3316e03641a5ecaa6c8a04374d98;p=pandora-kernel.git

x86, gart: add resume handling

If GART IOMMU is used on an AMD64 system, the northbridge registers
related to it should be restored during resume so that memory is not
corrupted.  Make gart_resume() handle that as appropriate.

Ref. http://lkml.org/lkml/2008/5/25/96 and the following thread.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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