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

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Message-ID: <20250827161922.GMaK8wCgjLqqVvHqSw@fat_crate.local>
Date: Wed, 27 Aug 2025 18:19:22 +0200
From: Borislav Petkov <bp@...en8.de>
To: "Kaplan, David" <David.Kaplan@....com>
Cc: Pawan Gupta <pawan.kumar.gupta@...ux.intel.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" <x86@...nel.org>,
	"H . Peter Anvin" <hpa@...or.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 4/5] x86/bugs: Add attack vector controls for SSB

On Wed, Aug 27, 2025 at 04:15:18PM +0000, Kaplan, David wrote:
> LGTM.  Just make sure to update the commit description since it no longer is
> adding an AUTO mitigation.

I have this now:

"Attack vector controls for SSB were missed in the initial attack vector series.
The default mitigation for SSB requires user-space opt-in so it is only
relevant for user->user attacks.  Check with attack vector controls when
the command is auto - i.e., no explicit user selection has been done."

Thx.

-- 
Regards/Gruss,
    Boris.

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