iommu/amd: Put IOMMUv2 capable devices in pt_domain

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If the device starts to use IOMMUv2 features the dma handles
need to stay valid. The only sane way to do this is to use a
identity mapping for the device and not translate it by the
iommu. This is implemented with this patch. Since this lifts
the device-isolation there is also a new kernel parameter
which allows to disable that feature.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>

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This commit is contained in:

Joerg Roedel 2011-12-01 15:49:45 +01:00

parent 400a28a05f

commit 5abcdba4fa

4 changed files with 91 additions and 16 deletions

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94

drivers/iommu/amd_iommu.c

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4

drivers/iommu/amd_iommu_init.c

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4

drivers/iommu/amd_iommu_types.h

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