[PATCH V9 1/9] iommu: add IOMMU_PRIV attribute
flat view
STALE3551d
REVIEWED: 13 (12M)
From: Sricharan R <hidden>
Date: 2017-01-06 13:39:42
Also in:
linux-iommu, lkml
Subsystem:
iommu subsystem, the rest · Maintainers:
Joerg Roedel, Will Deacon, Linus Torvalds
Revision v9 of 4 in this series; 3 review trailers (2 from subsystem maintainers).
Revisions (4)
- v6 [diff vs current]
- v7 [diff vs current]
- v8 [diff vs current]
- v9 current
From: Mitchel Humpherys <redacted> 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 <redacted> Acked-by: Will Deacon <redacted> --- 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@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