On Fri, Aug 27, 2021 at 12:17:19PM +0200, Pierre Morel wrote: > + > +#define VIRTIO_ID_PONG 30 /* virtio pong */ I take it this is a virtio test device that ping-pong's I/O. It sounds useful for other VIRTIO transports too. Can it be ported? Hmm, I can't find it in QEMU at all? Thanks, drew