What can we do with 64 cores? I think one of the few actual guaranteed mitigations to the problems with Meltdown type attacks is giving a process its own dedic

What can we do with 64 cores? I think one of the few actual guaranteed mitigations to the problems with Meltdown type attacks is giving a process its own dedicated cores and disallowing other processes on it. Then you can run it without mitigations which might enable better performance. Is anything like that already in Linux-land?