[PATCH v2] Support Intel AVX10.2 media instructions

[Jiang, Haochen]

> From: Jan Beulich <jbeulich@suse.com>
> Sent: Monday, September 23, 2024 2:43 PM
> 
> >
> > That is why I am ok with part of the mentioned patch. I suppose AVX10.2 should
> > imply AVX-VNNI-INT8/16 here.
> 
> And your doc folks would be willing to actually spell that out? (We're okay
> without, but it would be better if it was written down.)

They won't. They are quite conservative to make the promise that each HW with
AVX10.2 will have AVX-VNNI-INT{8,16}, although it is. But since we rarely deprecate
something and deprecating those two will be extremely weird, I suppose
the implication will be ok.

Also, for current GCC implementation, which is based on VEX encoding is always there
when there is EVEX encoding, it will lead to disaster when VEX encoding is not there。
So we will jump out internally and say no when they are trying to do so.

Thx,
Haochen

> 
> Jan