On Fri, Sep 17, 2021 at 04:49:41AM +0000, Tian, Kevin wrote: > > You just use the new style mdev API and directly call > > vfio_register_group_dev and it will pick up the > > parent->dev->iommu_group naturally like everything else using physical > > iommu groups. > > > > For above usage (wrap pdev into mdev), isn't the right way to directly add > vendor vfio-pci driver since vfio-pci-core has been split out now? It's not > necessary to fake a mdev just for adding some mediation in the r/w path... Exactly. > Another type of IOMMU-backed mdev is with pasid support. But for this > case we discussed earlier that it doesn't have group and will follow the > new /dev/iommu proposal instead. Indeed.
