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

From: Jing Liu
Date: Mon Jun 24 2019 - 08:06:39 EST

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. :)