On Tue, Oct 10, 2023 at 11:14:56AM -0400, Michael S. Tsirkin wrote: > I suggest 3 but call it on the VF. commands will switch to PF > internally as needed. For example, intel might be interested in exposing > admin commands through a memory BAR of VF itself. FWIW, we have been pushing back on such things in VFIO, so it will have to be very carefully security justified. Probably since that is not standard it should just live in under some intel-only vfio driver behavior, not in virtio land. It is also costly to switch between pf/vf, it should not be done pointlessly on the fast path. Jason