linux-kernel - Re: [PATCH] MAINTAINERS, x86/CPU: Tony Luck will maintain asm/intel-family.h

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Date:   Fri, 16 Aug 2019 09:01:07 +0200 (CEST)
From:   Thomas Gleixner <tglx@...utronix.de>
To:     "Luck, Tony" <tony.luck@...el.com>
cc:     Borislav Petkov <bp@...en8.de>,
        Dave Hansen <dave.hansen@...el.com>, x86@...nel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] MAINTAINERS, x86/CPU: Tony Luck will maintain
 asm/intel-family.h

On Thu, 15 Aug 2019, Luck, Tony wrote:
> >From 093bf8cd02f4c7a3fa256c2cf7302014190e2840 Mon Sep 17 00:00:00 2001
> From: Tony Luck <tony.luck@...el.com>
> Date: Thu, 15 Aug 2019 11:16:24 -0700
> Subject: [PATCH] x86/cpu: Explain Intel model naming convention
> 
> Dave Hansen spelled out the rules in an e-mail:
> 
>  https://lkml.kernel.org/r/91eefbe4-e32b-d762-be4d-672ff915db47@intel.com
> 
> Copy those right into the <asm/intel-family.h> file to
> make it easy for people to find them.
> 
> Suggested-by: Borislav Petkov <bp@...en8.de>
> Signed-off-by: Tony Luck <tony.luck@...el.com>
> ---
>  arch/x86/include/asm/intel-family.h | 15 +++++++++++++++
>  1 file changed, 15 insertions(+)
> 
> diff --git a/arch/x86/include/asm/intel-family.h b/arch/x86/include/asm/intel-family.h
> index 0278aa66ef62..fe7c205233f1 100644
> --- a/arch/x86/include/asm/intel-family.h
> +++ b/arch/x86/include/asm/intel-family.h
> @@ -11,6 +11,21 @@
>   * While adding a new CPUID for a new microarchitecture, add a new
>   * group to keep logically sorted out in chronological order. Within
>   * that group keep the CPUID for the variants sorted by model number.
> + *
> + * The defined symbol names have the following form:
> + *	INTEL_FAM6{OPTFAMILY}_{MICROARCH}{OPTDIFF}
> + * where:
> + * OPTFAMILY	Describes the family of CPUs that this belongs to. Default
> + *		is assumed to be "_CORE" (and should be omitted). Other values
> + *		currently in use are _ATOM and _XEON_PHI
> + * MICROARCH	Is the code name for the micro-architecture for this core.
> + *		N.B. Not the platform name.
> + * OPTDIFF	If needed, a short string to differentiate by market segment.
> + *		Exact strings here will vary over time. _DESKTOP, _MOBILE, and
> + *		_X (short for Xeon server) should be used when they are
> + *		appropriate.
> + *
> + * The #define line may optionally include a comment including platform names.
>   */

Acked-by: Thomas Gleixner <tglx@...utronix.de>