binfmt_misc helped me out a lot some years ago I had a build system which was able to cross compile. And a test system which wasn't able to handle cross compi

binfmt_misc helped me out a lot some years ago I had a build system which was able to cross compile. And a test system which wasn't able to handle cross compiled/emulated/remote code but needed to run test on cross compiled code. In the end with binfmt the test system never knew it was running the code with qemu instead of native and "just worked".