On Sun, Nov 02, 2025 at 10:00:48AM +0200, Leon Romanovsky wrote: > Changelog: > v6: > * Fixed wrong error check from pcim_p2pdma_init(). > * Documented pcim_p2pdma_provider() function. > * Improved commit messages. > * Added VFIO DMA-BUF selftest. > * Added __counted_by(nr_ranges) annotation to struct > vfio_device_feature_dma_buf. > * Fixed error unwind when dma_buf_fd() fails. > * Document latest changes to p2pmem. > * Removed EXPORT_SYMBOL_GPL from pci_p2pdma_map_type. > * Moved DMA mapping logic to DMA-BUF. > * Removed types patch to avoid dependencies between subsystems. > * Moved vfio_pci_dma_buf_move() in err_undo block. > * Added nvgrace patch.
I have verified this v6 using Jason's iommufd dmabuf branch: https://github.com/jgunthorpe/linux/commits/iommufd_dmabuf/ by drafting a QEMU patch on top of Shameer's vSMMU v5 series: https://github.com/nicolinc/qemu/commits/wip/iommufd_dmabuf/ with that, I see GPU BAR memory be correctly fetched in the QEMU: vfio_region_dmabuf Device 0009:01:00.0, region "0009:01:00.0 BAR 0", offset: 0x0, size: 0x1000000 vfio_region_dmabuf Device 0009:01:00.0, region "0009:01:00.0 BAR 2", offset: 0x0, size: 0x44f00000 vfio_region_dmabuf Device 0009:01:00.0, region "0009:01:00.0 BAR 4", offset: 0x0, size: 0x17a0000000 Tested-by: Nicolin Chen <[email protected]>
