Hi, On 2022-08-15 14:04:37 -0700, Andres Freund wrote: > Booting with the equivalent change, atop 5.19, in the legacy setup_vq() > reliably causes boot to hang: I don't know much virtio, so take this with a rock of salt: Legacy setup_vq() doesn't tell the host about the queue size. The modern one does: vp_modern_set_queue_size(mdev, index, virtqueue_get_vring_size(vq)); but the legacy one doesn't. I assume this means the host will assume the queue is of the size suggested by vp_legacy_get_queue_size(). If the host continues to write into the space after the "assumed end" of the queue, but the guest puts other stuff in that space, well, I'd expect fun roughly like the stuff we've been seeing in this and related threads. Greetings, Andres Freund _______________________________________________ Virtualization mailing list Virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linuxfoundation.org/mailman/listinfo/virtualization
