On Mon, 14 Jul 2025 13:08:25 -0300
Jason Gunthorpe <[email protected]> wrote:
> This was missed during the initial implementation. The VFIO PCI encodes
> the vf_token inside the device name when opening the device from the group
> FD, something like:
>
> "0000:04:10.0 vf_token=bd8d9d2b-5a5f-4f5a-a211-f591514ba1f3"
>
> This is used to control access to a VF unless there is co-ordination with
> the owner of the PF.
>
> Since we no longer have a device name in the cdev path, pass the token
> directly through VFIO_DEVICE_BIND_IOMMUFD using an optional field
> indicated by VFIO_DEVICE_BIND_FLAG_TOKEN.
>
> Fixes: 5fcc26969a16 ("vfio: Add VFIO_DEVICE_BIND_IOMMUFD")
> Tested-by: Shameer Kolothum <[email protected]>
> Reviewed-by: Yi Liu <[email protected]>
> Signed-off-by: Jason Gunthorpe <[email protected]>
> ---
> drivers/vfio/device_cdev.c | 38 +++++++++++++++++--
> .../vfio/pci/hisilicon/hisi_acc_vfio_pci.c | 1 +
> drivers/vfio/pci/mlx5/main.c | 1 +
> drivers/vfio/pci/nvgrace-gpu/main.c | 2 +
> drivers/vfio/pci/pds/vfio_dev.c | 1 +
> drivers/vfio/pci/qat/main.c | 1 +
> drivers/vfio/pci/vfio_pci.c | 1 +
> drivers/vfio/pci/vfio_pci_core.c | 22 +++++++----
> drivers/vfio/pci/virtio/main.c | 3 ++
> include/linux/vfio.h | 4 ++
> include/linux/vfio_pci_core.h | 2 +
> include/uapi/linux/vfio.h | 12 +++++-
> 12 files changed, 76 insertions(+), 12 deletions(-)
Applied to vfio next branch for v6.17 with discussed fix. Thanks,
Alex
