linux-kernel - Re: [PATCH v2 2/2] cpu: Ignore "mitigations" kernel parameter if CPU

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: <20240424053940.3ypivvztvv35dpu7@treble>
Date: Tue, 23 Apr 2024 22:39:40 -0700
From: Josh Poimboeuf <jpoimboe@...nel.org>
To: Sean Christopherson <seanjc@...gle.com>
Cc: Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...hat.com>,
	Borislav Petkov <bp@...en8.de>,
	Dave Hansen <dave.hansen@...ux.intel.com>, x86@...nel.org,
	Peter Zijlstra <peterz@...radead.org>, linux-kernel@...r.kernel.org,
	Stephen Rothwell <sfr@...b.auug.org.au>,
	Michael Ellerman <mpe@...erman.id.au>,
	Geert Uytterhoeven <geert@...ux-m68k.org>,
	Will Deacon <will@...nel.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>
Subject: Re: [PATCH v2 2/2] cpu: Ignore "mitigations" kernel parameter if
 CPU_MITIGATIONS=n

On Fri, Apr 19, 2024 at 05:05:55PM -0700, Sean Christopherson wrote:
> +#ifdef CONFIG_CPU_MITIGATIONS
>  extern bool cpu_mitigations_off(void);
>  extern bool cpu_mitigations_auto_nosmt(void);
> +#else
> +static inline bool cpu_mitigations_off(void)
> +{
> +	return false;
> +}

This should probably return true?

-- 
Josh