linux-kernel - Re: [PATCH] x86/cpu: Add new Raptor Lake CPU model number

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Message-ID: <YwXLYced9p6OCJae@worktop.programming.kicks-ass.net>
Date:   Wed, 24 Aug 2022 08:55:29 +0200
From:   Peter Zijlstra <peterz@...radead.org>
To:     Tony Luck <tony.luck@...el.com>
Cc:     x86@...nel.org, linux-kernel@...r.kernel.org,
        patches@...ts.linux.dev
Subject: Re: [PATCH] x86/cpu: Add new Raptor Lake CPU model number

On Tue, Aug 23, 2022 at 10:48:19AM -0700, Tony Luck wrote:
> Note1: Model 0xB7 already claimed the "no suffix" #define for a regular
> client part, so add (yet another) suffix "S" to distinguish this new
> part from the earlier one.
> 
> Note2: the RAPTORLAKE* and ALDERLAKE* processors are very similar from a
> software enabling point of view.  There are no known features that have
> model-specific enabling and also differ between the two.  In other words,
> every single place that list *one* or more RAPTORLAKE* or ALDERLAKE*
> processors should list all of them.

Note3: Except when they should not: https://lore.kernel.org/all/Yv9Kw21Wl/f6KJTk@worktop.programming.kicks-ass.net/?q=Alder+Lake+N