Intel IOMMU Suspend/Resume Support - DMAR

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This patch implements the suspend and resume feature for Intel IOMMU
DMAR. It hooks to kernel suspend and resume interface. When suspend happens, it
saves necessary hardware registers. When resume happens, it restores the
registers and restarts IOMMU by enabling translation, setting up root entry, and
re-enabling queued invalidation.

Signed-off-by: Fenghua Yu <fenghua.yu@intel.com>
Acked-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>

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Fenghua Yu 2009-03-27 14:22:42 -07:00 • committed by David Woodhouse

parent 8f912ba4d7

commit f59c7b69bc

2 changed files with 157 additions and 0 deletions

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146

drivers/pci/intel-iommu.c

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11

include/linux/intel-iommu.h

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