Re: [Xen-devel] [PATCH v2 03/14] x86/cpu/vpmu: Add Hygon Dhyana and AMD Zen support for vPMU

[Pu Wen <puwen@xxxxxxxx>]

On 2019/3/15 20:41, Jan Beulich wrote:
>>>> On 21.02.19 at 10:50, <puwen@xxxxxxxx> wrote:
>> --- a/xen/arch/x86/cpu/vpmu_amd.c
>> +++ b/xen/arch/x86/cpu/vpmu_amd.c
>> @@ -545,6 +545,8 @@ int __init amd_vpmu_init(void)
>>       switch ( current_cpu_data.x86 )
>>       {
>>       case 0x15:
>> +    case 0x17:
>> +    case 0x18:
>>           num_counters = F15H_NUM_COUNTERS;
>>           counters = AMD_F15H_COUNTERS;
>>           ctrls = AMD_F15H_CTRLS;
> 
> Unless you know what AMD Fam18 will look like, you can't do it
> like this. Fam18 really needs to be further qualified by a vendor
> check at this point in time.

Hygon will negotiate with AMD to make sure that only Hygon should use
Fam18h.

-- 
Regards,
Pu Wen

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