Re: [PATCH] libvhost-user: advertise vring features

2020-05-29 Thread Marc-André Lureau
Hi On Fri, May 29, 2020 at 6:13 PM Stefan Hajnoczi wrote: > > libvhost-user implements several vring features without advertising > them. There is no way for the vhost-user master to detect support for > these features. > > Things more or less work today because QEMU assumes the vhost-user > back

[PATCH] libvhost-user: advertise vring features

2020-05-29 Thread Stefan Hajnoczi
libvhost-user implements several vring features without advertising them. There is no way for the vhost-user master to detect support for these features. Things more or less work today because QEMU assumes the vhost-user backend always implements certain feature bits like VIRTIO_RING_F_EVENT_IDX.