On Wed, Sep 22, 2021 at 03:53:52AM +0000, Tian, Kevin wrote: > Actually this was one open we closed in previous design proposal, but > looks you have a different thought now. > > vfio maintains one ioas per container. Devices in the container > can be attached to different domains (e.g. due to snoop format). Every > time when the ioas is updated, every attached domain is updated > in accordance. > > You recommended one-ioas-one-domain model instead, i.e. any device > with a format incompatible with the one currently used in ioas has to > be attached to a new ioas, even if the two ioas's have the same mapping. > This leads to compatibility check at attaching time. > > Now you want returning back to the vfio model? Oh, I thought we circled back again.. If we are all OK with one ioas one domain then great. > > If think sis taking in the iommfd_device then there isn't a logical > > place to signal the PCIness > > can you elaborate? I mean just drop it and document it. Jason
