linux-kernel - RE: [PATCH v3 10/35] x86/bugs: Restructure gds mitigation

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Message-ID:
 <LV3PR12MB9265D6AC9934414447D5186994FC2@LV3PR12MB9265.namprd12.prod.outlook.com>
Date: Wed, 12 Feb 2025 15:36:15 +0000
From: "Kaplan, David" <David.Kaplan@....com>
To: Josh Poimboeuf <jpoimboe@...nel.org>
CC: Thomas Gleixner <tglx@...utronix.de>, Borislav Petkov <bp@...en8.de>,
	Peter Zijlstra <peterz@...radead.org>, Pawan Gupta
	<pawan.kumar.gupta@...ux.intel.com>, Ingo Molnar <mingo@...hat.com>, Dave
 Hansen <dave.hansen@...ux.intel.com>, "x86@...nel.org" <x86@...nel.org>, "H .
 Peter Anvin" <hpa@...or.com>, "linux-kernel@...r.kernel.org"
	<linux-kernel@...r.kernel.org>
Subject: RE: [PATCH v3 10/35] x86/bugs: Restructure gds mitigation

[AMD Official Use Only - AMD Internal Distribution Only]

> -----Original Message-----
> From: Josh Poimboeuf <jpoimboe@...nel.org>
> Sent: Monday, February 10, 2025 5:53 PM
> To: Kaplan, David <David.Kaplan@....com>
> Cc: Thomas Gleixner <tglx@...utronix.de>; Borislav Petkov <bp@...en8.de>; Peter
> Zijlstra <peterz@...radead.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>; linux-kernel@...r.kernel.org
> Subject: Re: [PATCH v3 10/35] x86/bugs: Restructure gds mitigation
>
> Caution: This message originated from an External Source. Use proper caution
> when opening attachments, clicking links, or responding.
>
>
> On Wed, Jan 08, 2025 at 02:24:50PM -0600, David Kaplan wrote:
> > @@ -902,7 +909,7 @@ static void __init gds_select_mitigation(void)
> >               } else {
> >                       gds_mitigation = GDS_MITIGATION_UCODE_NEEDED;
> >               }
> > -             goto out;
> > +             return;
>
> So right above this it clears X86_FEATURE_AVX, should that not be deferred until
> gds_apply_mitigation()?

Yes, will move it.

--David Kaplan