This is insanely impressive. Having tried set up GPU passthrough in proxmox a few years ago, it was an absolute disaster. I would love to see this kind of approach more widely supported by other hypervisors!
It's a real shame consumer GPUs are arbitrary locked down when the enterprise counterparts (often with the exact same chip) have much better support for virtualization.
Ya the lock out is absolutely arbitrary. There is zero physical difference between the consumer and server chips for these features. I think actually there's a lot of benefit to consumers by having these features enabled! I talk about that a bit here in our Xorg Developer Conference 2021 talk: https://www.youtube.com/watch?v=8pVrTyLqV_I
We're going to try to add support for more distributions in the coming days.
Right now we've got support in our install script for Ubuntu 20.04 hosts and arbitrary guest operating systems (Windows guests work best so far) but if people on GitHub are posting issues asking for support for other systems I'll try my best to get to those.
I'm going to try to add official support for Arch, PopOS, and Fedora as I know some people who I think would use it on those systems and a few others.