Re: [PATCH v7 0/8] dma-buf: Use revoke mechanism to invalidate shared buffers

[Christian König]

On 2/4/26 09:16, Leon Romanovsky wrote:
> On Mon, Feb 02, 2026 at 06:04:25PM +0200, Leon Romanovsky wrote:
>> On Sat, Jan 31, 2026 at 07:34:10AM +0200, Leon Romanovsky wrote:
>>> Changelog:
>>> v7:
>>
>> <...>
>>
>>> Leon Romanovsky (8):
>>>       dma-buf: Rename .move_notify() callback to a clearer identifier
>>>       dma-buf: Rename dma_buf_move_notify() to dma_buf_invalidate_mappings()
>>>       dma-buf: Always build with DMABUF_MOVE_NOTIFY
>>>       vfio: Wait for dma-buf invalidation to complete
>>>       dma-buf: Make .invalidate_mapping() truly optional
>>>       dma-buf: Add dma_buf_attach_revocable()
>>>       vfio: Permit VFIO to work with pinned importers
>>>       iommufd: Add dma_buf_pin()
>>>
>>>  drivers/dma-buf/Kconfig                     | 12 -----
>>>  drivers/dma-buf/dma-buf.c                   | 69 ++++++++++++++++++++-----
>>>  drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.c | 14 ++---
>>>  drivers/gpu/drm/amd/amdgpu/amdgpu_object.c  |  2 +-
>>>  drivers/gpu/drm/amd/amdkfd/Kconfig          |  2 +-
>>>  drivers/gpu/drm/virtio/virtgpu_prime.c      |  2 +-
>>>  drivers/gpu/drm/xe/tests/xe_dma_buf.c       |  7 ++-
>>>  drivers/gpu/drm/xe/xe_bo.c                  |  2 +-
>>>  drivers/gpu/drm/xe/xe_dma_buf.c             | 14 ++---
>>>  drivers/infiniband/core/umem_dmabuf.c       | 13 -----
>>>  drivers/infiniband/hw/mlx5/mr.c             |  2 +-
>>>  drivers/iommu/iommufd/pages.c               | 11 +++-
>>>  drivers/iommu/iommufd/selftest.c            |  2 +-
>>>  drivers/vfio/pci/vfio_pci_dmabuf.c          | 80 ++++++++++++++++++++++-------
>>>  include/linux/dma-buf.h                     | 17 +++---
>>>  15 files changed, 153 insertions(+), 96 deletions(-)
>>
>> Christian,
>>
>> Given the ongoing discussion around patch v5, I'm a bit unclear on the
>> current state. Is the series ready for merging, or do you need me to
>> rework anything further?
> 
> Christian,
> 
> Let's not miss the merge window for work that is already ready.

Mhm, sounds like AMDs mail servers never send my last mail out.

As far as I can see all patches have an reviewed-by, I also gave an rb on patch #6 (should that mail never got out as well). The discussion on patch v5 is just orthogonal I think, the handling was there even completely before this patch set.

For upstreaming as long as the VFIO and infiniband folks don't object I would like to take that through the drm-misc branch (like every other DMA-buf change).

So as long as nobody objects I can push that today, but I can't promise that Dave/Linus will take it for the 6.20 window.

Regards,
Christian.

> 
> Thanks
> 
>>
>> Thanks
>>