That sounds like a capability machine e.g., CHERI[1] It seems those might become relatively mainstream in a few years, as ARM seems to be jumping on board [2]

That sounds like a capability machine e.g., CHERI[1] It seems those might become relatively mainstream in a few years, as ARM seems to be jumping on board [2] [1]: https://www.cl.cam.ac.uk/research/security/ctsrd/cheri/ https://www.cl.cam.ac.uk/research/security/ctsrd/cheri/ [2]: https://www.cl.cam.ac.uk/research/security/ctsrd/cheri/cheri-morello.html https://www.cl.cam.ac.uk/research/security/ctsrd/cheri/cheri...