Re: [PATCH -v2] x86/cpu: Add CPU model number for Bartlett Lake CPUs with Raptor Cove cores

[Christian Ludloff]

On Mon, Apr 14, 2025 at 6:21 PM Luck, Tony <tony.luck@xxxxxxxxx> wrote:
> > > The macros refer to products.
> > > The comments refer to cores.
> >
> > > Consistency, please.
> > > Sanity, please.
> >
> > Amen!
>
> PeterZ has been very vocal that he wants the "sane" way to be making the "#define"
> name be based on the core rather than the product.  That way multiple products using
> the same core show up together in switch statements for model specific features like
> power and performance counters.
>
> This does mean we have a transition between legacy names that were using the
> SoC product codename and modern ones that use the core codename.
>
> Can the X86 maintainers please get in a huddle and define a naming
> policy. This discussion keeps happening.

Consider a two-level abstraction.

One which gets "looked up" from FMS – fundamentally
that is what the existing file is trying to achieve, right?

Another which gets "looked up" from core (e.g. RPC) or
product (e.g. RPL,BTL) or whatever-else-is-used-often.

--
Christian