linux-kernel - Re: [PATCH RESEND v2 3/3] x86/cpu: Enable modifying bug flags with {clear,set}puid

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Message-ID: <20250217170817.GGZ7NtAf-mg-zySpdP@fat_crate.local>
Date: Mon, 17 Feb 2025 18:08:17 +0100
From: Borislav Petkov <bp@...en8.de>
To: Brendan Jackman <jackmanb@...gle.com>
Cc: Jonathan Corbet <corbet@....net>, Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	Dave Hansen <dave.hansen@...ux.intel.com>, x86@...nel.org,
	"H. Peter Anvin" <hpa@...or.com>,
	Peter Zijlstra <peterz@...radead.org>, linux-doc@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH RESEND v2 3/3] x86/cpu: Enable modifying bug flags with
 {clear,set}puid

On Mon, Feb 17, 2025 at 05:56:32PM +0100, Brendan Jackman wrote:
> Er, hold on, what chunk can be whacked? Do you mean delete the ability
> to set clearcpuid by number? There are still features with no name.

Really, which ones?

Are you saying you want to turn off *arbitrary* features? Not only what gets
advertized in /proc/cpuinfo?

Why?

-- 
Regards/Gruss,
    Boris.

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