linux-kernel - Re: [PATCH 5/6] x86/cpu: Add platform ID to CPU matching structure

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <08c39a16-a729-44b0-bcd8-d4c6dbada213@intel.com>
Date: Tue, 20 Jan 2026 07:09:01 -0800
From: Dave Hansen <dave.hansen@...el.com>
To: Andy Shevchenko <andriy.shevchenko@...el.com>,
 Dave Hansen <dave.hansen@...ux.intel.com>
Cc: linux-kernel@...r.kernel.org, sohil.mehta@...el.com,
 Borislav Petkov <bp@...en8.de>, "H. Peter Anvin" <hpa@...or.com>,
 Ingo Molnar <mingo@...hat.com>, Jon Kohler <jon@...anix.com>,
 Pawan Gupta <pawan.kumar.gupta@...ux.intel.com>,
 "Peter Zijlstra (Intel)" <peterz@...radead.org>,
 Thomas Gleixner <tglx@...nel.org>, Tony Luck <tony.luck@...el.com>,
 x86@...nel.org
Subject: Re: [PATCH 5/6] x86/cpu: Add platform ID to CPU matching structure

On 1/20/26 00:30, Andy Shevchenko wrote:
...
>>  #define X86_STEPPING_ANY 0
>>  #define X86_STEP_MIN 0
>>  #define X86_STEP_MAX 0xf
>> +#define X86_PLATFORM_ANY 0x0
>>  #define X86_FEATURE_ANY 0	/* Same as FPU, you can't test for that */
> Wouldn't it be slightly better to locate the new one here to follow the order
> in x86_cpu_id above?

I stuck it there because ->platform_mask acts functionally like the
stepping mask does.