Um... Are you referring to WSL? Wouldn't that be the linux kernel running under windows?
WSL 1.0 was doing something like that. Doing syscall translation in real time. Eventually edge cases forced them to abandon that architecture and now it's just a VM.
alt Hacker News
WSL 1.0 was doing something like that. Doing syscall translation in real time. Eventually edge cases forced them to abandon that architecture and now it's just a VM.