Subject: [PATCH V9 1/9] iommu: add IOMMU_PRIV attribute

From: [email-masked] (Sricharan R)
Date: Fri, 6 Jan 2017 18:58:08 +0530

From: Mitchel Humpherys <[email-masked]>

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

Reviewed-by: Robin Murphy <[email-masked]>
Tested-by: Robin Murphy <[email-masked]>
Signed-off-by: Mitchel Humpherys <[email-masked]>
Acked-by: Will Deacon <[email-masked]>
---
 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;
-- 
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