On Wed, Feb 2, 2022 at 3:04 PM Oliver Upton <oupton@xxxxxxxxxx> wrote:
>
> Ultimately, it is the responsibility of userspace to configure an
> appropriate MSR value for the CPUID it provides its guest. However,
> there are a few bits in VMX capability MSRs where KVM intervenes. The
> "load IA32_PERF_GLOBAL_CTRL", "load IA32_BNDCFGS", and "clear
> IA32_BNDCFGS" bits in the VMX VM-{Entry,Exit} control capability MSRs
> are updated every time userspace sets the guest's CPUID. In so doing,
> there is an imposed ordering between ioctls, that userspace must set MSR
> values *after* setting the guest's CPUID.
Do you mean *before*?
