Re: [PATCHv4 10/30] x86/tdx: Handle CPUID via #VE

Dave Hansen
2022-02-28T23:37:48Z

On 2/28/22 15:31, Kirill A. Shutemov wrote:
>> Does this, in practice, keep TDX guests from detecting any features that
>> it supports today?
> I scanned through the list of CPUID that probed via #VE during the boot
> and they are related to cache/TLB hierarchy enumeration, thermal and
> topology. Without cache/TLB enumeration we may miss some optimization.
> Topology can be problematic, we may miss ability to communicate the
> configuration, I donno.
>
> Shouldn't be a show-stopper.

I can live with that for an initial TDX guest series. Does that bother
anyone else?