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| author | Mitchel Humpherys | 2017-01-06 14:28:08 +0100 |
|---|---|---|
| committer | Will Deacon | 2017-01-19 16:56:17 +0100 |
| commit | 579b2a65d245c093d3e63845c320b9321f112b75 (patch) | |
| tree | c07ed55edf7993bd0c648479c6307d31e35808dc /include/linux/iommu.h | |
| parent | Linux 4.10-rc3 (diff) | |
| download | kernel-qcow2-linux-579b2a65d245c093d3e63845c320b9321f112b75.tar.gz kernel-qcow2-linux-579b2a65d245c093d3e63845c320b9321f112b75.tar.xz kernel-qcow2-linux-579b2a65d245c093d3e63845c320b9321f112b75.zip | |
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>
Diffstat (limited to 'include/linux/iommu.h')
| -rw-r--r-- | include/linux/iommu.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/include/linux/iommu.h b/include/linux/iommu.h index 0ff5111f6959..69e2417a2965 100644 --- a/include/linux/iommu.h +++ b/include/linux/iommu.h @@ -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; |