iommu: add IOMMU_EXEC flag for safely allowing XN mappings

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Whilst most IOMMU mappings should probably be non-executable, there
may be cases (HSA?) where executable mappings are required.

This patch introduces a new mapping flag, IOMMU_EXEC, to indicate that
the mapping should be mapped as executable.

Signed-off-by: Will Deacon <will.deacon@arm.com>

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This commit is contained in:

Will Deacon 2013-11-05 15:59:53 +00:00

parent 06f983dd57

commit ca13bb3d4e

1 changed files with 4 additions and 3 deletions

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7

include/linux/iommu.h

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