[v1,1/6] iommu: Add DOMAIN_ATTR_PTBASE
diff mbox series

Message ID 1580249770-1088-2-git-send-email-jcrouse@codeaurora.org
State New, archived
Headers show
Series
  • iommu/arm-smmu: Auxiliary domain and per instance pagetables
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Commit Message

Jordan Crouse Jan. 28, 2020, 10:16 p.m. UTC
Add an attribute to return the base address of the pagetable. This is used
by auxiliary domains from arm-smmu to return the address of the pagetable
to the domain so that it can set the appropriate pagetable through it's
own means.

Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
---

 include/linux/iommu.h | 2 ++
 1 file changed, 2 insertions(+)

Patch
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diff --git a/include/linux/iommu.h b/include/linux/iommu.h
index b14398b..0e9bcd9 100644
--- a/include/linux/iommu.h
+++ b/include/linux/iommu.h
@@ -128,6 +128,8 @@  enum iommu_attr {
 	DOMAIN_ATTR_DMA_USE_FLUSH_QUEUE,
 	/* Enable split pagetables (for example, TTBR1 on arm-smmu) */
 	DOMAIN_ATTR_SPLIT_TABLES,
+	/* Return the pagetable base address */
+	DOMAIN_ATTR_PTBASE,
 	DOMAIN_ATTR_MAX,
 };