On Mon, Dec 10, 2018 at 06:08:43PM -0200, Eduardo Habkost wrote: > | The Opteron_G2, OpteronG3, Opteron_G4, and Opteron_G5 CPU > | models require KVM support for RDTSCP, which was added on > | Linux 4.5. I've added that to the current diff: "The OpteronG[345] CPU models require KVM support for RDTSCP, which was added with Linux 4.5." In the meantime, I tried executing RDTSCP on a K8 laptop and it gave SIGILL so I'd say the AMD docs have a typo and family 0xf - at least the A-E revisions of which model 6 is a part of - doesn't have RDTSCP. But let's see... Thx. -- Regards/Gruss, Boris. Good mailing practices for 400: avoid top-posting and trim the reply.