[PATCH 04/10] iommu/amd: Detect pre enabled translation

Add functions to check whether translation is already enabled in IOMMU. Maybe it need be checked per IOMMU. Currently for debugging I didn't do like that. Signed-off-by: Baoquan He --- drivers/iommu/amd_iommu_init.c | 26 ++ drivers/iommu/amd_iommu_proto.h | 4 2

[PATCH 04/10] iommu/amd: Detect pre enabled translation

Add functions to check whether translation is already enabled in IOMMU. Maybe it need be checked per IOMMU. Currently for debugging I didn't do like that. Signed-off-by: Baoquan He --- drivers/iommu/amd_iommu_init.c | 26 ++