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| author | Eric Auger <eric.auger@redhat.com> | 2023-10-19 15:45:08 +0200 |
|---|---|---|
| committer | Cédric Le Goater <clg@redhat.com> | 2023-11-03 09:20:31 +0100 |
| commit | 51478a8ef5694cbd92b9a3436ec4489464210a8e (patch) | |
| tree | cdc14fcd69a6520fc02d8795b9f6a6c0b3074308 /include | |
| parent | e8f433f80e831ecd81989ae0246f3f1e2d3ac480 (diff) | |
| download | qemu-51478a8ef5694cbd92b9a3436ec4489464210a8e.zip qemu-51478a8ef5694cbd92b9a3436ec4489464210a8e.tar.gz qemu-51478a8ef5694cbd92b9a3436ec4489464210a8e.tar.bz2 | |
memory: Introduce memory_region_iommu_set_iova_ranges
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>
[ clg: fixes in memory_region_iommu_set_iova_ranges() and
iommu_set_iova_ranges() documentation ]
Signed-off-by: Cédric Le Goater <clg@redhat.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/exec/memory.h | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/include/exec/memory.h b/include/exec/memory.h index d94314d..831f7c9 100644 --- a/include/exec/memory.h +++ b/include/exec/memory.h @@ -527,6 +527,26 @@ 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. + * + * @iommu: the IOMMUMemoryRegion + * + * @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; @@ -1857,6 +1877,18 @@ int memory_region_iommu_set_page_size_mask(IOMMUMemoryRegion *iommu_mr, Error **errp); /** + * memory_region_iommu_set_iova_ranges - Set the usable IOVA ranges + * for a given IOMMU MR region + * + * @iommu: 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 * * Returns the string that was used to initialize the memory region. |