linux-kernel - Re: [PATCH v2] scripts/x86/intel: Add a script to update the minimum ucode revisions

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Message-ID: <20250822100949.GAaKhB7ZlYxjpfcIit@fat_crate.local>
Date: Fri, 22 Aug 2025 12:09:49 +0200
From: Borislav Petkov <bp@...en8.de>
To: Sohil Mehta <sohil.mehta@...el.com>
Cc: Dave Hansen <dave.hansen@...ux.intel.com>, x86@...nel.org,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>, "H . Peter Anvin" <hpa@...or.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Josh Poimboeuf <jpoimboe@...nel.org>,
	Pawan Gupta <pawan.kumar.gupta@...ux.intel.com>,
	Dave Hansen <dave.hansen@...el.com>,
	Nikolay Borisov <nik.borisov@...e.com>,
	Andrew Cooper <andrew.cooper3@...rix.com>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] scripts/x86/intel: Add a script to update the minimum
 ucode revisions

On Thu, Aug 21, 2025 at 05:44:22PM -0700, Sohil Mehta wrote:
> The kernel maintains a table of minimum expected microcode revisions for
> Intel CPUs in intel-ucode-defs.h. Systems with microcode older than
> these revisions are flagged with X86_BUG_OLD_MICROCODE. For more
> details, refer to Documentation/admin-guide/hw-vuln/old_microcode.rst.
> 
> Add a simple script to keep the header file up-to-date based on released
> microcode updates.

I can see the "what" - you don't have to explain it. What I don't see in this
commit message is the "why". Why should this be in the kernel?

-- 
Regards/Gruss,
    Boris.

https://people.kernel.org/tglx/notes-about-netiquette