Re: [PATCH RFC 00/26] Add DMA-buf mapping types and convert vfio/iommufd to use them

Jason Gunthorpe
2026-03-01T19:05:49Z

On Tue, Feb 17, 2026 at 08:11:31PM -0400, Jason Gunthorpe wrote:
> Jason Gunthorpe (26):
> dma-buf: Introduce DMA-buf mapping types
> dma-buf: Add the SGT DMA mapping type
> dma-buf: Add dma_buf_mapping_attach()
> dma-buf: Route SGT related actions through attach->map_type
> dma-buf: Allow single exporter drivers to avoid the match_mapping
> function

I've rebased my github branch:

https://github.com/jgunthorpe/linux/commits/dmabuf_map_type

On to drm-misc-next comit 41dae5ac5e15 ("drm/nouveau: Test for imported
buffers with drm_gem_is_imported()") and reworked some of the pending
bits on the VFIO side to accommodate Leon's series.

Christian/Thomas/Vivek, how are you feeling about this approach? I'd
like to focus on the above patches, should I post a non-RFC series?

Thanks,
Jason