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[PATCH v9 2/9] memory: Add interface to set iommu page size mask
From: |
Bharat Bhushan |
Subject: |
[PATCH v9 2/9] memory: Add interface to set iommu page size mask |
Date: |
Mon, 23 Mar 2020 14:16:10 +0530 |
Allow to set page size mask to be supported by iommu.
This is required to expose page size mask compatible with
host with virtio-iommu.
Signed-off-by: Bharat Bhushan <address@hidden>
---
include/exec/memory.h | 20 ++++++++++++++++++++
memory.c | 10 ++++++++++
2 files changed, 30 insertions(+)
diff --git a/include/exec/memory.h b/include/exec/memory.h
index e85b7de99a..063c424854 100644
--- a/include/exec/memory.h
+++ b/include/exec/memory.h
@@ -355,6 +355,16 @@ typedef struct IOMMUMemoryRegionClass {
* @iommu: the IOMMUMemoryRegion
*/
int (*num_indexes)(IOMMUMemoryRegion *iommu);
+
+ /*
+ * Set supported IOMMU page size
+ *
+ * Optional method: if this is supported then set page size that
+ * can be supported by IOMMU. This is called to set supported page
+ * size as per host Linux.
+ */
+ void (*iommu_set_page_size_mask)(IOMMUMemoryRegion *iommu,
+ uint64_t page_size_mask);
} IOMMUMemoryRegionClass;
typedef struct CoalescedMemoryRange CoalescedMemoryRange;
@@ -1363,6 +1373,16 @@ int memory_region_iommu_attrs_to_index(IOMMUMemoryRegion
*iommu_mr,
*/
int memory_region_iommu_num_indexes(IOMMUMemoryRegion *iommu_mr);
+/**
+ * memory_region_iommu_set_page_size_mask: set the supported pages
+ * size by iommu.
+ *
+ * @iommu_mr: the memory region
+ * @page_size_mask: supported page size mask
+ */
+void memory_region_iommu_set_page_size_mask(IOMMUMemoryRegion *iommu_mr,
+ uint64_t page_size_mask);
+
/**
* memory_region_name: get a memory region's name
*
diff --git a/memory.c b/memory.c
index aeaa8dcc9e..14c8783084 100644
--- a/memory.c
+++ b/memory.c
@@ -1833,6 +1833,16 @@ static int
memory_region_update_iommu_notify_flags(IOMMUMemoryRegion *iommu_mr,
return ret;
}
+void memory_region_iommu_set_page_size_mask(IOMMUMemoryRegion *iommu_mr,
+ uint64_t page_size_mask)
+{
+ IOMMUMemoryRegionClass *imrc = IOMMU_MEMORY_REGION_GET_CLASS(iommu_mr);
+
+ if (imrc->iommu_set_page_size_mask) {
+ imrc->iommu_set_page_size_mask(iommu_mr, page_size_mask);
+ }
+}
+
int memory_region_register_iommu_notifier(MemoryRegion *mr,
IOMMUNotifier *n, Error **errp)
{
--
2.17.1
[PATCH v9 2/9] memory: Add interface to set iommu page size mask,
Bharat Bhushan <=
[PATCH v9 3/9] vfio: set iommu page size as per host supported page size, Bharat Bhushan, 2020/03/23
[PATCH v9 4/9] virtio-iommu: set supported page size mask, Bharat Bhushan, 2020/03/23
[PATCH v9 6/9] virtio-iommu: Call iommu notifier for attach/detach, Bharat Bhushan, 2020/03/23
[PATCH v9 5/9] virtio-iommu: Add iommu notifier for map/unmap, Bharat Bhushan, 2020/03/23