Re: [PATCH RFC] kvm: x86: Expose AVX512_BF16 feature to guest

[Jing Liu]

Hi Paolo,

On 6/24/2019 4:33 PM, Paolo Bonzini wrote:
> On 24/06/19 05:10, Jing Liu wrote:
> > > What do you think about @index in current function? Does it mean, we
> > > need put cpuid from index to max subleaf to @entry[i]? If so, the logic
> > > seems as follows,
> > >
> > > if (index == 0) {
> > >  ÂÂÂÂ // Put subleaf 0 into @entry
> > >  ÂÂÂÂ // Put subleaf 1 into @entry[1]
> > > } else if (index < entry->eax) {
> > >  ÂÂÂÂ // Put subleaf 1 into @entry
> > > } else {
> > >  ÂÂÂÂ // Put all zero into @entry
> > > }
> > >
> > > But this seems not identical with other cases, for current caller
> > > function. Or we can simply ignore @index in 0x07 and just put all
> > > possible subleaf info back?
>
> There are indeed quite some cleanups to be made there.  Let me post a
> series as soon as possible, and you can base your work on it.

Thanks. I just had another mail (replying you in this serial) appending
some codes to deal with case 7. If you prefer to firstly cleanup, I can
wait for the patch then. :)

Thanks,
Jing

> Paolo