On Sun, Apr 23, 2023 at 10:28:58AM +0000, Liu, Yi L wrote: > This noiommu improvement shall allow user to attach ioas to noiommu devices. > is it? This may be done by calling iommufd_access_attach(). So there is a > quick question. In the cdev series, shall we allow the attachment > for noiommu? Yes, I think we need to undo the decision we talked about earlier where no-iommu would be asked for with a -1 iommufd. All vfio_devices should have an iommufd_ctx when container is compiled out. You don't need to do anything with the ctx for no-iommu beyond demand that userspace provide it. Jason
