The README also mentions iOS, which AFAIK is only ARM. There's also some ARM specific code: https://github.com/apple/darwin-xnu/tree/master/pexpert/arm https:/

The README also mentions iOS, which AFAIK is only ARM. There's also some ARM specific code: https://github.com/apple/darwin-xnu/tree/master/pexpert/arm https://github.com/apple/darwin-xnu/tree/master/pexpert/arm The Makefile also has ARM/ARM64 options.