It’s worth pointing out that not only does Windows have KPTI/KVA shadowing enabled for AMD processors as well, it even has specialized shadow system call entry stubs for AMD vs Intel. This either suggests they know how to embargo properly or that Tom’s PR is not entirely accurate
— Alex Ionescu (@aionescu) January 3, 2018
.Bingo! #kpti #intelbug pic.twitter.com/Dml9g8oywk
— brainsmoke (@brainsmoke) January 3, 2018