linux-kernel - Re: [PATCH v2 4/5] x86/bugs: Add attack vector controls for SSB

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Message-ID: <20250827102754.GHaK7dqivnNnQsWGeS@fat_crate.local>
Date: Wed, 27 Aug 2025 12:27:54 +0200
From: Borislav Petkov <bp@...en8.de>
To: Pawan Gupta <pawan.kumar.gupta@...ux.intel.com>
Cc: David Kaplan <david.kaplan@....com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Peter Zijlstra <peterz@...radead.org>,
	Josh Poimboeuf <jpoimboe@...nel.org>,
	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 v2 4/5] x86/bugs: Add attack vector controls for SSB

On Wed, Aug 20, 2025 at 11:17:23PM -0700, Pawan Gupta wrote:
> On Tue, Aug 19, 2025 at 02:21:59PM -0500, David Kaplan wrote:
> > @@ -2646,11 +2650,18 @@ early_param("spec_store_bypass_disable", ssb_parse_cmdline);
> >  
> >  static void __init ssb_select_mitigation(void)
> >  {
> > -	if (!boot_cpu_has_bug(X86_BUG_SPEC_STORE_BYPASS) || cpu_mitigations_off()) {
> > +	if (!boot_cpu_has_bug(X86_BUG_SPEC_STORE_BYPASS)) {
> 
> Nothing major, but this change belongs to the next patch that cleans up
> cpu_mitigations_off().

Fixed and expediting this one so that 6.17 releases with the full attack
vectors functionality.

Thx.

-- 
Regards/Gruss,
    Boris.

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