> From: Jason Gunthorpe <jgg@xxxxxxxxxx> > Sent: Thursday, November 17, 2022 5:06 AM > > 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. > > Tested-by: Nicolin Chen <nicolinc@xxxxxxxxxx> > Tested-by: Yi Liu <yi.l.liu@xxxxxxxxx> > Tested-by: Lixiao Yang <lixiao.yang@xxxxxxxxx> > Tested-by: Matthew Rosato <mjrosato@xxxxxxxxxxxxx> > Tested-by: Yu He <yu.he@xxxxxxxxx> > Signed-off-by: Jason Gunthorpe <jgg@xxxxxxxxxx> Reviewed-by: Kevin Tian <kevin.tian@xxxxxxxxx>
