Of course you'll need a TigerLake chip for it to do anything. Are those even released yet?
Re: RIP ROP: CET Internals in Windows 20H1
#41Fedora has been implementing this for a while. It will finally be enabled in Fedora 33 later this year: https://bugzilla.redhat.com/show_bug.cgi?id=1802674#c3