On Tue, 19 Jan 2016 14:22:37 +0100 Paolo Bonzini <pbonz...@redhat.com> wrote:
> The next patch will make virtqueue_pop/vring_pop allocate memory for the > VirtQueueElement. In some cases (blk, scsi, gpu) the device wants to > extend VirtQueueElement with device-specific fields and, until now, the > place of the VirtQueueElement within the containing struct didn't > matter. When allocating the entire block in virtqueue_pop/vring_pop, > however, the containing struct must basically be a "subclass" of > VirtQueueElement, with the VirtQueueElement as the first field. Make > that the case for blk and scsi; gpu is already doing it. Sounds good!
