linux-kernel - Re: [PATCH] x86/cpu: Rename Denverton and Gemini Lake

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Date:   Tue, 7 Aug 2018 11:37:36 -0700
From:   Andi Kleen <ak@...ux.intel.com>
To:     Peter Zijlstra <peterz@...radead.org>
Cc:     Dave Hansen <dave.hansen@...ux.intel.com>,
        kan.liang@...ux.intel.com, tglx@...utronix.de, mingo@...hat.com,
        len.brown@...el.com, linux-kernel@...r.kernel.org, x86@...nel.org
Subject: Re: [PATCH] x86/cpu: Rename Denverton and Gemini Lake

On Tue, Aug 07, 2018 at 07:48:51PM +0200, Peter Zijlstra wrote:
> On Tue, Aug 07, 2018 at 10:35:42AM -0700, Dave Hansen wrote:
> > On 08/07/2018 10:17 AM, kan.liang@...ux.intel.com wrote:
> > > Denverton and Gemini Lake are platform names and should not be used for
> > > Processor Family stuff. The microarchitecture codename should be used.
> > 
> > Why?
> > 
> > Denverton is the platform.  "Goldmont" is literally the
> > microarchitecture, and you are suggesting moving *to* the
> > microarchitecture name, which contradicts the description.
> 
> All the other (big core) are uarch names. Atom is weird in that it mixes
> uarch with platform names.

On most big core the platform/SOC just happens to have the same name as the 
uarch. But the identifiers really have to be per SOC because that 
is how Intel model numbers work.

It should be always the SOC.

-Andi