tree f8c1d9bbc5695979d2ad822a7bccb42f375dc904
parent bb6dfb32f90094fea647e1f27d994a8b6ddd2766
author Rafael J. Wysocki <rjw@sisk.pl> 1213049448 +0200
committer Ingo Molnar <mingo@elte.hu> 1213272685 +0200

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>