On Tue, Mar 22, 2022 at 4:07 AM Paolo Bonzini <pbonzini@xxxxxxxxxx> wrote: > > Add a file to document all the different ways in which the virtual CPU > emulation is imperfect. Include an example to show how to document > such errata. This is fantastic. Thank you. Along these lines, I wonder if we should come up with a mechanism a la IA32_ARCH_CAPABILITIES (or AMD's OSVW MSRs) for declaring fixed errata. For example, today, KVM ignores the guest-only and host-only bits in PerfEvtSel MSRs, but I can't imagine we're going to do that forever. Reviewed-by: Jim Mattson <jmattson@xxxxxxxxxx>
