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

From: Paolo Bonzini
Date: Mon Jun 24 2019 - 04:33:43 EST


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.

Paolo