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| author | Jason Gunthorpe <jgg@nvidia.com> | 2022-11-29 16:31:52 -0400 |
|---|---|---|
| committer | Jason Gunthorpe <jgg@nvidia.com> | 2022-12-02 11:52:03 -0400 |
| commit | 4741f2e941298ad7553b65e66624435e14793391 (patch) | |
| tree | 40c2f75ea6ee652e82fc6cc95399b59a06e304f5 /drivers/gpu/drm/i915 | |
| parent | a4d1f91db5021c57e14721ac090616c90386ac70 (diff) | |
| download | linux-4741f2e941298ad7553b65e66624435e14793391.tar.bz2 | |
vfio-iommufd: Support iommufd for emulated VFIO devices
Emulated VFIO devices are calling vfio_register_emulated_iommu_dev() and
consist of all the mdev drivers.
Like the physical drivers, support for iommufd is provided by the driver
supplying the correct standard ops. Provide ops from the core that
duplicate what vfio_register_emulated_iommu_dev() does.
Emulated drivers are where it is more likely to see variation in the
iommfd support ops. For instance IDXD will probably need to setup both a
iommfd_device context linked to a PASID and an iommufd_access context to
support all their mdev operations.
Link: https://lore.kernel.org/r/7-v4-42cd2eb0e3eb+335a-vfio_iommufd_jgg@nvidia.com
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Reviewed-by: Alex Williamson <alex.williamson@redhat.com>
Tested-by: Alex Williamson <alex.williamson@redhat.com>
Tested-by: Nicolin Chen <nicolinc@nvidia.com>
Tested-by: Yi Liu <yi.l.liu@intel.com>
Tested-by: Lixiao Yang <lixiao.yang@intel.com>
Tested-by: Matthew Rosato <mjrosato@linux.ibm.com>
Tested-by: Yu He <yu.he@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Diffstat (limited to 'drivers/gpu/drm/i915')
| -rw-r--r-- | drivers/gpu/drm/i915/gvt/kvmgt.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/gvt/kvmgt.c b/drivers/gpu/drm/i915/gvt/kvmgt.c index aaf0d9e8da95..f5164099c264 100644 --- a/drivers/gpu/drm/i915/gvt/kvmgt.c +++ b/drivers/gpu/drm/i915/gvt/kvmgt.c @@ -1484,6 +1484,9 @@ static const struct vfio_device_ops intel_vgpu_dev_ops = { .mmap = intel_vgpu_mmap, .ioctl = intel_vgpu_ioctl, .dma_unmap = intel_vgpu_dma_unmap, + .bind_iommufd = vfio_iommufd_emulated_bind, + .unbind_iommufd = vfio_iommufd_emulated_unbind, + .attach_ioas = vfio_iommufd_emulated_attach_ioas, }; static int intel_vgpu_probe(struct mdev_device *mdev) |