linux-kernel - Re: [RFC PATCH 20/56] x86/bugs: Move bugs.c logic out of .init section

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: <DDJQYGOJ4VTT.20JIC6NWZXUYW@google.com>
Date: Thu, 16 Oct 2025 12:31:38 +0000
From: Brendan Jackman <jackmanb@...gle.com>
To: David Kaplan <david.kaplan@....com>, Thomas Gleixner <tglx@...utronix.de>, 
	Borislav Petkov <bp@...en8.de>, Peter Zijlstra <peterz@...radead.org>, 
	Josh Poimboeuf <jpoimboe@...nel.org>, Pawan Gupta <pawan.kumar.gupta@...ux.intel.com>, 
	Ingo Molnar <mingo@...hat.com>, Dave Hansen <dave.hansen@...ux.intel.com>, <x86@...nel.org>, 
	"H . Peter Anvin" <hpa@...or.com>
Cc: Alexander Graf <graf@...zon.com>, Boris Ostrovsky <boris.ostrovsky@...cle.com>, 
	<linux-kernel@...r.kernel.org>
Subject: Re: [RFC PATCH 20/56] x86/bugs: Move bugs.c logic out of .init section

On Mon Oct 13, 2025 at 2:34 PM UTC, David Kaplan wrote:
> If dynamic mitigations are supported, all the mitigation selection
> functions and mitigation choices may change at runtime.  Therefore, none of
> the functions may exist in .init and the data must not be read-only.

I suppose we should have something akin to
__meminit/__init_or_module/__net_init here (like __init, but conditional
on Kconfig), so that users with CONFIG_DYNAMIC_MITIGATIONS=n can still
get the RAM back?