linux-kernel - Re: [PATCH v3 02/74] x86/cpu/vfm: Add new macros to work with (vendor/family/model) values

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Date: Wed, 17 Apr 2024 09:42:25 +0200
From: Amadeusz Sławiński
 <amadeuszx.slawinski@...ux.intel.com>
To: Tony Luck <tony.luck@...el.com>, Borislav Petkov <bp@...en8.de>
Cc: x86@...nel.org, linux-kernel@...r.kernel.org, patches@...ts.linux.dev,
 Thomas Gleixner <tglx@...utronix.de>
Subject: Re: [PATCH v3 02/74] x86/cpu/vfm: Add new macros to work with
 (vendor/family/model) values

On 4/16/2024 11:19 PM, Tony Luck wrote:
> To avoid adding a slew of new macros for each new Intel CPU family
> switch over from providing CPU model number #defines to a new
> scheme that encodes vendor, family, and model in a single number.
> 
> Signed-off-by: Tony Luck <tony.luck@...el.com>
> Reviewed-by: Thomas Gleixner <tglx@...utronix.de>
> ---
>   arch/x86/include/asm/cpu_device_id.h | 93 ++++++++++++++++++++++++++++
>   1 file changed, 93 insertions(+)
> 
> diff --git a/arch/x86/include/asm/cpu_device_id.h b/arch/x86/include/asm/cpu_device_id.h
> index bf4e065cf1e2..833f230aeafc 100644
> --- a/arch/x86/include/asm/cpu_device_id.h
> +++ b/arch/x86/include/asm/cpu_device_id.h
> @@ -2,6 +2,39 @@
>   #ifndef _ASM_X86_CPU_DEVICE_ID
>   #define _ASM_X86_CPU_DEVICE_ID
>   
> +/*
> + * Can't use <linux/bitfield.h> because it generates expressions that
> + * cannot be used in structure initializers. Bitfield construction
> + * here must match the union in struct cpuinfo_86:

Typo:
cpuinfo_86 -> cpuinfo_x86