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[PATCH v4 02/12] memory: Introduce memory_region_iommu_set_iova_ranges
From: |
Eric Auger |
Subject: |
[PATCH v4 02/12] memory: Introduce memory_region_iommu_set_iova_ranges |
Date: |
Thu, 19 Oct 2023 15:45:08 +0200 |
This helper will allow to convey information about valid
IOVA ranges to virtual IOMMUS.
Signed-off-by: Eric Auger <eric.auger@redhat.com>
Acked-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
---
v2 -> v3:
- Pass a Glist instead
- Added a comment on memory_region_iommu_set_iova_ranges
- Removed R-b due to that change
---
include/exec/memory.h | 30 ++++++++++++++++++++++++++++++
system/memory.c | 13 +++++++++++++
2 files changed, 43 insertions(+)
diff --git a/include/exec/memory.h b/include/exec/memory.h
index a089ab4555..1b2791145e 100644
--- a/include/exec/memory.h
+++ b/include/exec/memory.h
@@ -527,6 +527,24 @@ struct IOMMUMemoryRegionClass {
int (*iommu_set_page_size_mask)(IOMMUMemoryRegion *iommu,
uint64_t page_size_mask,
Error **errp);
+ /**
+ * @iommu_set_iova_ranges:
+ *
+ * Propagate information about the usable IOVA ranges for a given IOMMU
+ * memory region. Used for example to propagate host physical device
+ * reserved memory region constraints to the virtual IOMMU.
+ *
+ * Optional method: if this method is not provided, then the default IOVA
+ * aperture is used.
+ *
+ * @iova_ranges: list of ordered IOVA ranges (at least one range)
+ *
+ * Returns 0 on success, or a negative error. In case of failure, the error
+ * object must be created.
+ */
+ int (*iommu_set_iova_ranges)(IOMMUMemoryRegion *iommu,
+ GList *iova_ranges,
+ Error **errp);
};
typedef struct RamDiscardListener RamDiscardListener;
@@ -1856,6 +1874,18 @@ int
memory_region_iommu_set_page_size_mask(IOMMUMemoryRegion *iommu_mr,
uint64_t page_size_mask,
Error **errp);
+/**
+ * memory_region_iommu_set_iova_ranges - Set the usable IOVA ranges
+ * for a given IOMMU MR region
+ *
+ * @iommu_mr: IOMMU memory region
+ * @iova_ranges: list of ordered IOVA ranges (at least one range)
+ * @errp: pointer to Error*, to store an error if it happens.
+ */
+int memory_region_iommu_set_iova_ranges(IOMMUMemoryRegion *iommu,
+ GList *iova_ranges,
+ Error **errp);
+
/**
* memory_region_name: get a memory region's name
*
diff --git a/system/memory.c b/system/memory.c
index a800fbc9e5..1034f136f0 100644
--- a/system/memory.c
+++ b/system/memory.c
@@ -1916,6 +1916,19 @@ int
memory_region_iommu_set_page_size_mask(IOMMUMemoryRegion *iommu_mr,
return ret;
}
+int memory_region_iommu_set_iova_ranges(IOMMUMemoryRegion *iommu_mr,
+ GList *iova_ranges,
+ Error **errp)
+{
+ IOMMUMemoryRegionClass *imrc = IOMMU_MEMORY_REGION_GET_CLASS(iommu_mr);
+ int ret = 0;
+
+ if (imrc->iommu_set_iova_ranges) {
+ ret = imrc->iommu_set_iova_ranges(iommu_mr, iova_ranges, errp);
+ }
+ return ret;
+}
+
int memory_region_register_iommu_notifier(MemoryRegion *mr,
IOMMUNotifier *n, Error **errp)
{
--
2.41.0
- [PATCH v4 00/12] VIRTIO-IOMMU/VFIO: Don't assume 64b IOVA space, Eric Auger, 2023/10/19
- [PATCH v4 01/12] memory: Let ReservedRegion use Range, Eric Auger, 2023/10/19
- [PATCH v4 04/12] virtio-iommu: Rename reserved_regions into prop_resv_regions, Eric Auger, 2023/10/19
- [PATCH v4 02/12] memory: Introduce memory_region_iommu_set_iova_ranges,
Eric Auger <=
- [PATCH v4 03/12] vfio: Collect container iova range info, Eric Auger, 2023/10/19
- [PATCH v4 05/12] range: Make range_compare() public, Eric Auger, 2023/10/19
- [PATCH v4 06/12] util/reserved-region: Add new ReservedRegion helpers, Eric Auger, 2023/10/19
- [PATCH v4 09/12] virtio-iommu: Record whether a probe request has been issued, Eric Auger, 2023/10/19
- [PATCH v4 10/12] virtio-iommu: Implement set_iova_ranges() callback, Eric Auger, 2023/10/19
- [PATCH v4 08/12] range: Introduce range_inverse_array(), Eric Auger, 2023/10/19
- [PATCH v4 07/12] virtio-iommu: Introduce per IOMMUDevice reserved regions, Eric Auger, 2023/10/19
- [PATCH v4 11/12] virtio-iommu: Consolidate host reserved regions and property set ones, Eric Auger, 2023/10/19
- [PATCH v4 12/12] test: Add some tests for range and resv-mem helpers, Eric Auger, 2023/10/19
- Re: [PATCH v4 00/12] VIRTIO-IOMMU/VFIO: Don't assume 64b IOVA space, Cédric Le Goater, 2023/10/20