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

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Date: Wed, 24 Apr 2024 15:42:48 +0200
From: Borislav Petkov <bp@...en8.de>
To: Josh Poimboeuf <jpoimboe@...nel.org>
Cc: Sean Christopherson <seanjc@...gle.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	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 Tue, Apr 23, 2024 at 10:39:40PM -0700, Josh Poimboeuf wrote:
> 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?

Right, I'll fix it up while applying and send them linuswards this
weekend so that 6.9 releases fixed.

Thx.

-- 
Regards/Gruss,
    Boris.

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