iommu/amd: Detect pre enabled translation

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Add functions to check whether translation is already enabled in IOMMU.

Signed-off-by: Baoquan He <bhe@redhat.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>

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Baoquan He 2017-08-09 16:33:33 +08:00 • committed by Joerg Roedel

parent ef954844c7

commit 4c232a708b

3 changed files with 28 additions and 0 deletions

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24

drivers/iommu/amd_iommu_init.c

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1

drivers/iommu/amd_iommu_proto.h

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3

drivers/iommu/amd_iommu_types.h

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