Re: [PATCH v2 2/8] x86/mtrr: support setting MTRR state for software defined MTRRs

[Kirill A. Shutemov]

On Mon, Feb 13, 2023 at 03:07:07PM +0100, Juergen Gross wrote:
> > So this here needs to check:
> > 
> > 	if (!cpu_feature_enabled(X86_FEATURE_HYPERVISOR) &&
> > 	    !(cpu_feature_enabled(X86_FEATURE_SEV_SNP) ||
> > 	      cpu_feature_enabled(X86_FEATURE_XENPV))) {
> > 		WARN_ON_ONCE(1);
> > 		return;
> > 	}
> > 
> > as we don't want this to be called somewhere or by something else.
> 
> Wouldn't !cpu_feature_enabled(X86_FEATURE_HYPERVISOR) be enough?
> 
> I'm not sure we won't need that for TDX guests, too.

TDX guests are covered by X86_FEATURE_HYPERVISOR.


-- 
  Kiryl Shutsemau / Kirill A. Shutemov