Re: [PATCH 2/3] x86: Add support for AMD's Automatic IBRS

[Alejandro Vallejo]

On Fri, May 26, 2023 at 12:28:39PM -0400, Jason Andryuk wrote:
> >      if ( boot_cpu_data.extended_cpuid_level >= 0x80000008 )
> > +    {
> >          cpuid(0x80000008, &tmp, &e8b, &tmp, &tmp);
> > +        cpuid(0x80000021, &e21a, &tmp, &tmp, &tmp);
> > +    }
> 
> Do you need to check boot_cpu_data.extended_cpuid_level >= 0x80000021?
> 
> Regards,
> Jason

True that, yes. Will do on v2.

Alejandro