From: Mitchel Humpherys <[email protected]> Add the IOMMU_PRIV attribute, which is used to indicate privileged mappings.
Reviewed-by: Robin Murphy <[email protected]> Tested-by: Robin Murphy <[email protected]> Signed-off-by: Mitchel Humpherys <[email protected]> Acked-by: Will Deacon <[email protected]> --- include/linux/iommu.h | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/include/linux/iommu.h b/include/linux/iommu.h index 0ff5111..69e2417 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; -- QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation
