Re: [PATCH v3 0/5] KVM: x86: Expose Zhaoxin CPUID 0xC0000001 EDX cryptographic features

[Ewan Hai-oc]

On Wed, Jul 01, 2026 at 06:49:26PM -0700, Borislav Petkov wrote:
> On Wed, Jul 01, 2026 at 07:09:48AM -0700, Sean Christopherson wrote:
> > On Wed, Jul 01, 2026, Ewan Hai-oc wrote:
> > > Gentle ping. Any further comments on this series?
> > 
> > LGTM, I'm just waiting for -rc2 to start applying anything for 7.3.  The only
> > question is if Boris is ok exposing all of these via /proc/cpuinfo.
> 
> My canned answer always is: Documentation/arch/x86/cpuinfo.rst and I'd suggest
> to the Zhaoxin people to think twice before exposing things in /proc/cpuinfo
> and burdening themselves with maintaining this forever.

Fair point. We've thought about it and are fine with the commitment. The existing
word-5 entries already expose their flags, and keeping the new ones consistent
seems like less hassle than making them a special case.
 
> But I don't know of anyone who has that hardware and so testing on it is a bit
> of a problem and so that leaf is a bit of a don't-care. I'd say.
> 
> Btw, Sashiko rightfully mentions:
> 
> https://lore.kernel.org/r/20260610024350.F13471F00893@xxxxxxxxxxxxxxx
> 
> Thx.
> 
> -- 
> Regards/Gruss,
>     Boris.
> 
> https://people.kernel.org/tglx/notes-about-netiquette