On 24/09/20 23:20, Jim Mattson wrote: > On Thu, Sep 24, 2020 at 11:42 AM Tom Lendacky <thomas.lendacky@xxxxxxx> wrote: >> >> From: Tom Lendacky <thomas.lendacky@xxxxxxx> >> >> This series updates the INVD intercept support for both SVM and VMX to >> skip the instruction rather than emulating it, since emulation of this >> instruction is just a NOP. > > Isn't INVD a serializing instruction, whereas NOP isn't? IIRC, Intel > doesn't architect VM-entry or VM-exit as serializing, though they > probably are in practice. I'm not sure what AMD's stance on this is. Of course that isn't changed by this patch, though. Queuing both, but a clarification would be useful. The same applies even to CPUID. Paolo
