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(parent: 56fbf60) | patch
iommu/arm-smmu: Restrict domain attributes to UNMANAGED domains
authorWill Deacon <will.deacon@arm.com>
Fri, 6 Jan 2017 16:28:17 +0000 (16:28 +0000)
committerWill Deacon <will.deacon@arm.com>
Thu, 6 Apr 2017 15:06:43 +0000 (16:06 +0100)
commit0834cc28fa56c65887c614b6c045be2ba06fdcb0
tree2b999c010be5d5e05aa805f9d1a79f37e1cc89a3tree | snapshot (tar.gz zip)
parent56fbf600dd8e2f32a5317437fe310b56719f7d2bcommit | diff
iommu/arm-smmu: Restrict domain attributes to UNMANAGED domains

The ARM SMMU drivers provide a DOMAIN_ATTR_NESTING domain attribute,
which allows callers of the IOMMU API to request that the page table
for a domain is installed at stage-2, if supported by the hardware.

Since setting this attribute only makes sense for UNMANAGED domains,
this patch returns -ENODEV if the domain_{get,set}_attr operations are
called on other domain types.

Signed-off-by: Will Deacon <will.deacon@arm.com>
drivers/iommu/arm-smmu-v3.c diff | blob | blame | history
drivers/iommu/arm-smmu.c diff | blob | blame | history