They'll probably say something about requiring to port your virtualization software to the macOS Hypervisor framework. It has already been the only option for a

They'll probably say something about requiring to port your virtualization software to the macOS Hypervisor framework. It has already been the only option for apps distributed via the App Store which want to provide virtualization. Qemu already supports it as the "hvf" backend. I can't speak to what the performance is like. (there's a bit of history there - a company developed it for a commercial product, Google ended up forking the open source parts for the android emulator which eventually resulted in them contributing it back to qemu upstream).