[PATCH] x86: Detect Intel Diamond Rapids

[Sunil Pandey]

On Sat, Apr 12, 2025 at 9:22 AM Sunil Pandey <skpgkp2@gmail.com> wrote:

>
>
> On Sat, Apr 12, 2025 at 8:37 AM H.J. Lu <hjl.tools@gmail.com> wrote:
>
>> Detect Intel Diamond Rapids and tune it similar to Intel Granite Rapids.
>>
>> Signed-off-by: H.J. Lu <hjl.tools@gmail.com>
>> ---
>>  sysdeps/x86/cpu-features.c | 12 ++++++++++++
>>  1 file changed, 12 insertions(+)
>>
>> diff --git a/sysdeps/x86/cpu-features.c b/sysdeps/x86/cpu-features.c
>> index b13b7b76fa..e50f1d6932 100644
>> --- a/sysdeps/x86/cpu-features.c
>> +++ b/sysdeps/x86/cpu-features.c
>> @@ -542,6 +542,7 @@ enum intel_microarch
>>    INTEL_BIGCORE_ARROWLAKE,
>>    INTEL_BIGCORE_PANTHERLAKE,
>>    INTEL_BIGCORE_GRANITERAPIDS,
>> +  INTEL_BIGCORE_DIAMONDRAPIDS,
>>
>>    /* Mixed (bigcore + atom SOC).  */
>>    INTEL_MIXED_LAKEFIELD,
>> @@ -817,6 +818,16 @@ disable_tsx:
>>               break;
>>             }
>>         }
>> +      else if (family == 19)
>> +       switch (model)
>> +         {
>> +         case 0x01:
>> +           microarch = INTEL_BIGCORE_DIAMONDRAPIDS;
>> +           break;
>> +
>> +         default:
>> +           break;
>> +         }
>>
>>        switch (microarch)
>>         {
>> @@ -926,6 +937,7 @@ disable_tsx:
>>         case INTEL_BIGCORE_SAPPHIRERAPIDS:
>>         case INTEL_BIGCORE_EMERALDRAPIDS:
>>         case INTEL_BIGCORE_GRANITERAPIDS:
>> +       case INTEL_BIGCORE_DIAMONDRAPIDS:
>>           /* Default tuned Mixed (bigcore + atom SOC). */
>>         case INTEL_MIXED_LAKEFIELD:
>>         case INTEL_MIXED_ALDERLAKE:
>> --
>> 2.49.0
>>
>>
> LGTM
>
> Reviewed-by: Sunil K Pandey <skpgkp2@gmail.com>
>
> --Sunil
>

 I would like to backport this patch to release branches.
Any comments or objections?

--Sunil