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authorFenghua Yu <fenghua.yu@intel.com>2009-03-27 14:22:42 -0700
committerDavid Woodhouse <David.Woodhouse@intel.com>2009-04-03 21:45:54 +0100
commitf59c7b69bcba31cd355ababe067202b9895d6102 (patch)
tree4f06ceb6ab9a135acd9b316c806aaa99c097b373 /drivers/scsi
parent8f912ba4d7cdaf7d31cf39fe5a9b7732308a256d (diff)
Intel IOMMU Suspend/Resume Support - DMAR
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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