vfio: Prevent from pinned DMABUF importers to attach to VFIO DMABUF

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Some pinned importers, such as non-ODP RDMA ones, cannot invalidate their
mappings and therefore must be prevented from attaching to this exporter.

Fixes: 5d74781ebc ("vfio/pci: Add dma-buf export support for MMIO regions")
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Reviewed-by: Pranjal Shrivastava <praan@google.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/20260121-vfio-add-pin-v1-1-4e04916b17f1@nvidia.com
Signed-off-by: Alex Williamson <alex@shazbot.org>

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Leon Romanovsky 2026-01-21 17:45:02 +02:00 • committed by Alex Williamson

parent 24d479d26b

commit 61ceaf2361

1 changed files with 12 additions and 0 deletions

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drivers/vfio/pci/vfio_pci_dmabuf.c

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