On Wed, Jan 07, 2026 at 11:54:09PM +0000, David Matlack wrote: > On 2026-01-07 02:13 PM, Alex Mastro wrote: > > Test MMIO-backed DMA mappings by iommu_map()-ing mmap'ed BAR regions. > > Thanks for adding this! > > > Also update vfio_pci_bar_map() to align BAR mmaps for efficient huge > > page mappings. > > > > Only vfio_type1 variants are tested; iommufd variants can be added > > once kernel support lands. > > Are there plans to support mapping BARs via virtual address in iommufd? > I thought the plan was only to support via dma-bufs. Maybe Jason can > confirm.
Only dmabuf. > Assuming not, should we add negative tests here to make sure iommufd > does not allow mapping BARs? Yes > And then we can add dma-buf tests in a future commit. Yes Jason
