> Add tests that a dmabuf keeps IOMMU_MMIO in a domain that is filled > from an already mapped area: a second domain added to the IOAS after > the dmabuf has been mapped, and the domain of another IOAS the dmabuf > is copied into. > > The mock page table has no memory type bits, so a mapping made with > IOMMU_MMIO cannot be told apart from one made with IOMMU_CACHE. Wrap the > mock's generic_pt map_range and unmap_range ops to record, per domain, > the pages mapped with IOMMU_MMIO, and add IOMMU_TEST_OP_MD_CHECK_MMIO to > check that a range is recorded. The check rejects ranges that wrap or > do not fit in unsigned long.
I'm not keen on this, the special mock amd domain is just for mock usage, we should probably just add a mmio bit if we want to do this test. -- Jason
