[PATCH 1/2] iommu: add IOMMU_PRIV flag for access-protected mappings

[Mitchel Humpherys]

Some IOMMUs support access-protected mappings. Add a mapping flag to
indicate that the mapping should be created with access protection
configured.

Cc: Shubhraprakash Das <sadas at codeaurora.org>
Signed-off-by: Mitchel Humpherys <mitchelh at codeaurora.org>
---
 include/linux/iommu.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/include/linux/iommu.h b/include/linux/iommu.h
index 20f9a52792..44101c9332 100644
--- a/include/linux/iommu.h
+++ b/include/linux/iommu.h
@@ -28,6 +28,7 @@
 #define IOMMU_WRITE	(1 << 1)
 #define IOMMU_CACHE	(1 << 2) /* DMA cache coherency */
 #define IOMMU_EXEC	(1 << 3)
+#define IOMMU_PRIV	(1 << 4)
 
 struct iommu_ops;
 struct iommu_group;
-- 
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