You'd better be, we have certain expectations from you now /s

But more seriously... I don't think that Linux has ever been booted on a non-monolithic CPU (I wanted to say 'discrete cpu' first, but there's some PDP-11s with 4 chip CPUs)

one could argue that 4004 is it. It does not really do memory ops at all. all decoding for memory ops happens inside the memory chips. but yeah - not non-monolithic enough