It's possible to get macOS arm64 working on Arm hardware (except Rosetta on Arm cores that don't implement TSO/SC, or you're stuck with a single core). However,

It's possible to get macOS arm64 working on Arm hardware (except Rosetta on Arm cores that don't implement TSO/SC, or you're stuck with a single core). However, Arm macOS assumes an Armv8.3-A architecture baseline. Patching at runtime from Armv8.3-A to v8.2-A is quite feasible, to 8.0-A like an RPi4 is another matter. Of course, this will apply to VMs only (for now at least). https://alephsecurity.com/2019/06/17/xnu-qemu-arm64-1/ https://alephsecurity.com/2019/06/17/xnu-qemu-arm64-1/ was a good starting point for me.