Commit 579b2a65 authored Jan 06, 2017 by Mitchel Humpherys Committed by Will Deacon Jan 19, 2017

iommu: add IOMMU_PRIV attribute



Add the IOMMU_PRIV attribute, which is used to indicate privileged
mappings.

Reviewed-by: Robin Murphy <robin.murphy@arm.com>
Tested-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Mitchel Humpherys <mitchelh@codeaurora.org>
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>

parent a121103c

include/linux/iommu.h

+7 −0

Original line number	Diff line number	Diff line
		@@ -31,6 +31,13 @@
		#define IOMMU_CACHE (1 << 2) /* DMA cache coherency */
		#define IOMMU_NOEXEC (1 << 3)
		#define IOMMU_MMIO (1 << 4) /* e.g. things like MSI doorbells */
		/*
		* This is to make the IOMMU API setup privileged
		* mapppings accessible by the master only at higher
		* privileged execution level and inaccessible at
		* less privileged levels.
		*/
		#define IOMMU_PRIV (1 << 5)

		struct iommu_ops;
		struct iommu_group;