[PATCH v4] x86: Add ARL/PTL/CWF model detection support

[Sunil Pandey]

On Thu, Apr 10, 2025 at 7:35 AM H.J. Lu <hjl.tools@gmail.com> wrote:

> On Thu, Apr 10, 2025 at 7:28 AM Sunil K Pandey <sunil.k.pandey@intel.com>
> wrote:
> >
> > From: Sunil K Pandey <skpgkp2@gmail.com>
> >
> > - Add ARROWLAKE model detection.
> > - Add PANTHERLAKE model detection.
> > - Add CLEARWATERFOREST model detection.
> >
> > Intel® Architecture Instruction Set Extensions Programming Reference
> > https://cdrdv2.intel.com/v1/dl/getContent/671368 Section 1.2.
> >
> > No regression, validated model detection on SDE.
> > ---
> >  sysdeps/x86/cpu-features.c | 10 ++++++++++
> >  1 file changed, 10 insertions(+)
> >
> > diff --git a/sysdeps/x86/cpu-features.c b/sysdeps/x86/cpu-features.c
> > index 9d136e42ad..f1d2a179e4 100644
> > --- a/sysdeps/x86/cpu-features.c
> > +++ b/sysdeps/x86/cpu-features.c
> > @@ -512,6 +512,7 @@ enum
> >    INTEL_ATOM_GOLDMONT,
> >    INTEL_ATOM_GOLDMONT_PLUS,
> >    INTEL_ATOM_SIERRAFOREST,
> > +  INTEL_ATOM_CLEARWATERFOREST,
> >    INTEL_ATOM_GRANDRIDGE,
> >    INTEL_ATOM_TREMONT,
> >
> > @@ -539,6 +540,7 @@ enum
> >    INTEL_BIGCORE_METEORLAKE,
> >    INTEL_BIGCORE_LUNARLAKE,
> >    INTEL_BIGCORE_ARROWLAKE,
> > +  INTEL_BIGCORE_PANTHERLAKE,
> >    INTEL_BIGCORE_GRANITERAPIDS,
> >
> >    /* Mixed (bigcore + atom SOC).  */
> > @@ -584,6 +586,8 @@ intel_get_fam6_microarch (unsigned int model,
> >        return INTEL_ATOM_GOLDMONT_PLUS;
> >      case 0xAF:
> >        return INTEL_ATOM_SIERRAFOREST;
> > +    case 0xDD:
> > +      return INTEL_ATOM_CLEARWATERFOREST;
> >      case 0xB6:
> >        return INTEL_ATOM_GRANDRIDGE;
> >      case 0x86:
> > @@ -691,8 +695,12 @@ intel_get_fam6_microarch (unsigned int model,
> >        return INTEL_BIGCORE_METEORLAKE;
> >      case 0xbd:
> >        return INTEL_BIGCORE_LUNARLAKE;
> > +    case 0xb5:
> > +    case 0xc5:
> >      case 0xc6:
> >        return INTEL_BIGCORE_ARROWLAKE;
> > +    case 0xCC:
> > +      return INTEL_BIGCORE_PANTHERLAKE;
> >      case 0xAD:
> >      case 0xAE:
> >        return INTEL_BIGCORE_GRANITERAPIDS;
> > @@ -808,6 +816,7 @@ init_cpu_features (struct cpu_features *cpu_features)
> >             Default tuned atom microarch.
> >             case INTEL_ATOM_SIERRAFOREST:
> >             case INTEL_ATOM_GRANDRIDGE:
> > +           case INTEL_ATOM_CLEARWATERFOREST:
> >            */
> >
> >               /* Bigcore/Default Tuning.  */
> > @@ -865,6 +874,7 @@ init_cpu_features (struct cpu_features *cpu_features)
> >             case INTEL_BIGCORE_METEORLAKE:
> >             case INTEL_BIGCORE_LUNARLAKE:
> >             case INTEL_BIGCORE_ARROWLAKE:
> > +           case INTEL_BIGCORE_PANTHERLAKE:
> >             case INTEL_BIGCORE_SAPPHIRERAPIDS:
> >             case INTEL_BIGCORE_EMERALDRAPIDS:
> >             case INTEL_BIGCORE_GRANITERAPIDS:
> > --
> > 2.49.0
> >
>
> LGTM.
>
> Reviewed-by: H.J. Lu <hjl.tools@gmail.com>
>
> Thanks.
>
> --
> H.J.
>

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

--Sunil