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

[Leon Romanovsky]

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?

Thanks