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) {
// Put subleaf 0 into @
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) {
>> // Put subleaf 0 into @entry
>> // Put subleaf 1 into @entr
Hi Paolo,
After thinking more, I found way to satisfy all cases in a easy way.
How about things like this?
@@ -507,12 +510,26 @@ static inline int __do_cpuid_ent(struct
kvm_cpuid_entry2 *entry, u32 fu
* if the host doesn't support it.
*/
Hi Paolo,
On 6/20/2019 8:16 PM, Paolo Bonzini wrote:
On 20/06/19 13:21, Jing Liu wrote:
+ for (i = 1; i <= times; i++) {
+ if (*nent >= maxnent)
+ goto out;
+ do_cpuid_1_ent(&entry[i], function, i);
+
On 20/06/19 13:21, Jing Liu wrote:
> + for (i = 1; i <= times; i++) {
> + if (*nent >= maxnent)
> + goto out;
> + do_cpuid_1_ent(&entry[i], function, i);
> + entry[i].eax &= F(AVX512_BF16);
> +
AVX512 BFLOAT16 instructions support 16-bit BFLOAT16 floating-point
format (BF16) for deep learning optimization.
Intel adds AVX512 BFLOAT16 feature in CooperLake, which is CPUID.7.1.EAX[5].
Detailed information of the CPUID bit can be found here,
https://software.intel.com/sites/default/files/ma
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