x86, gart: add resume handling

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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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Rafael J. Wysocki 2008-06-10 00:10:48 +02:00 • committed by Ingo Molnar

parent bb6dfb32f9

commit 6703f6d10d

3 changed files with 55 additions and 5 deletions

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include/asm-x86/gart.h

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