On Mon, Oct 04 2021, "Michael S. Tsirkin" <m...@redhat.com> wrote:
> On Mon, Oct 04, 2021 at 02:01:14PM +0200, Cornelia Huck wrote: >> On Sun, Oct 03 2021, "Michael S. Tsirkin" <m...@redhat.com> wrote: >> > @@ -160,6 +163,33 @@ \subsection{Legacy Interface: A Note on Feature >> > Specification text within these sections generally does not apply >> > to non-transitional devices. >> > >> > +\begin{note} >> > +The device offers different features when used through >> > +the legacy interface and when operated in accordance with this >> > +specification. >> > +\end{note} >> > + >> > +Transitional drivers MUST use Devices only through the legacy interface >> >> s/Devices only through the legacy interface/devices through the legacy >> interface only/ >> >> ? > > Both versions are actually confused, since how do you > find out that device does not offer VIRTIO_F_VERSION_1? > > I think what this should really say is > > Transitional drivers MUST NOT accept VIRTIO_F_VERSION_1 through > the legacy interface. Ok, that makes sense. Would it make sense that transitional drivers MUST accept VERSION_1 through the non-legacy interface? Or is that redundant? > > > Does linux actually satisfy this? Will it accept VIRTIO_F_VERSION_1 > through the legacy interface if offered? I think that the Linux drivers will not operate on feature bit 32+ if they are in legacy mode? >> >> Generally, looks good to me. > > Do we want to also add explanation that features can be > changed until FEATURES_OK? I always considered that to be implict, as feature negotiation is not over until we have FEATURES_OK. Not sure whether we need an extra note. _______________________________________________ Virtualization mailing list Virtualization@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/virtualization