iommu/arm-smmu: Restrict domain attributes to UNMANAGED domains

Browse source

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>

...

This commit is contained in:

Will Deacon 2017-01-06 16:28:17 +00:00

parent 56fbf600dd

commit 0834cc28fa

2 changed files with 12 additions and 0 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

6

drivers/iommu/arm-smmu-v3.c

View file

6

drivers/iommu/arm-smmu.c

View file