WTF? Sierra/High Sierra KVM with qemu and full video passthrough?

How did I never see this... it looks incredible, and I don't know how specific this is to UnRAID? It may run on any Linux with qemu and KVM?

https://lime-technology.com/forums/topic/50191-video-guide-mac-osx-1011-1012-and-now-1013-high-sierra/