[PATCH v2] x86: Detect Intel Nova Lake Processor

[Pandey, Sunil K]

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

--Sunil   

-----Original Message-----
From: H.J. Lu <hjl.tools@gmail.com> 
Sent: Tuesday, October 7, 2025 8:02 PM
To: Pandey, Sunil K <sunil.k.pandey@intel.com>
Cc: libc-alpha@sourceware.org
Subject: Re: [PATCH v2] x86: Detect Intel Nova Lake Processor

On Wed, Oct 8, 2025 at 8:34 AM Sunil K Pandey <sunil.k.pandey@intel.com> wrote:
>
> Detect Intel Nova Lake Processor and tune it similar to Intel Panther 
> Lake.  https://cdrdv2.intel.com/v1/dl/getContent/671368 Section 1.2.
> ---
>  sysdeps/x86/cpu-features.c | 13 +++++++++++++
>  1 file changed, 13 insertions(+)
>
> diff --git a/sysdeps/x86/cpu-features.c b/sysdeps/x86/cpu-features.c 
> index 4bdade883e..b67ef541dd 100644
> --- a/sysdeps/x86/cpu-features.c
> +++ b/sysdeps/x86/cpu-features.c
> @@ -544,6 +544,7 @@ enum intel_microarch
>    INTEL_BIGCORE_GRANITERAPIDS,
>    INTEL_BIGCORE_DIAMONDRAPIDS,
>    INTEL_BIGCORE_WILDCATLAKE,
> +  INTEL_BIGCORE_NOVALAKE,
>
>    /* Mixed (bigcore + atom SOC).  */
>    INTEL_MIXED_LAKEFIELD,
> @@ -821,6 +822,17 @@ disable_tsx:
>               break;
>             }
>         }
> +      else if (family == 18)
> +       switch (model)
> +         {
> +         case 0x01:
> +         case 0x03:
> +           microarch = INTEL_BIGCORE_NOVALAKE;
> +           break;
> +
> +         default:
> +           break;
> +         }
>        else if (family == 19)
>         switch (model)
>           {
> @@ -938,6 +950,7 @@ disable_tsx:
>         case INTEL_BIGCORE_ARROWLAKE:
>         case INTEL_BIGCORE_PANTHERLAKE:
>         case INTEL_BIGCORE_WILDCATLAKE:
> +       case INTEL_BIGCORE_NOVALAKE:
>         case INTEL_BIGCORE_SAPPHIRERAPIDS:
>         case INTEL_BIGCORE_EMERALDRAPIDS:
>         case INTEL_BIGCORE_GRANITERAPIDS:
> --
> 2.51.0
>

LGTM.

Reviewed-by: H.J. Lu <hjl.tools@gmail.com>

Thanks.

--
H.J.