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 <bbhush...@marvell.com> --- 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