I've updated Spectrum's Cloud Hypervisor patches (which add virtio-gpu support) to reflect crosvm's recent renumbering[1] of some of the non-standard vhost-user protocol messages. [1]: https://chromium.googlesource.com/crosvm/crosvm/+/e428c4ba88a26695f63929c680... More information is available at <https://spectrum-os.org/software/cloud-hypervisor/>.