virtio — archive

[Parav Pandit <parav@nvidia.com>]

On 5/5/2023 11:41 AM, Michael S. Tsirkin wrote: > Add commands to find out which commands does each group support, > as well as enable their use by driver. > This will be especially useful once we have multiple group types. > > An alternative is per-type VQs. This is possible but will > require more per-transport work. Discovery through the vq > helps keep things contained. > > e.g. lack of support for some command can switch to a legacy mode > > note that commands are expected to be avolved by adding new > fields to command specific data at the tail, so > we generally do not need feature bits for compatibility. > > Based-on-patch-by: Max Gurtovoy <mgurtovoy@nvidia.com> > Signed-off-by: Michael S. Tsirkin <mst@redhat.com> > Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> > Reviewed-by: Zhu Lingshan <lingshan.zhu@intel.com> > Reviewed-by: Parav Pandit <parav@nvidia.com>