linux-kernel - Re: [PATCH v5 00/16] Attack vector controls (part 1)

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Message-ID: <atsc4gd3spwbus2o2di5dsdhaxmyzdquxin46ba5tj2appjxt2@uab35ctqk7op>
Date: Mon, 21 Apr 2025 22:22:32 -0700
From: Josh Poimboeuf <jpoimboe@...nel.org>
To: David Kaplan <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 v5 00/16] Attack vector controls (part 1)

On Fri, Apr 18, 2025 at 11:17:05AM -0500, David Kaplan wrote:
> This is an updated version of the first half of the attack vector series
> which focuses on restructuring arch/x86/kernel/cpu/bugs.c.
> 
> For more info the attack vector series, please see v4 at
> https://lore.kernel.org/all/20250310164023.779191-1-david.kaplan@amd.com/.
> 
> These patches restructure the existing mitigation selection logic to use a
> uniform set of functions.  First, the "select" function is called for each
> mitigation to select an appropriate mitigation.  Unless a mitigation is
> explicitly selected or disabled with a command line option, the default
> mitigation is AUTO and the "select" function will then choose the best
> mitigation.  After the "select" function is called for each mitigation,
> some mitigations define an "update" function which can be used to update
> the selection, based on the choices made by other mitigations.  Finally,
> the "apply" function is called which enables the chosen mitigation.
> 
> This structure simplifies the mitigation control logic, especially when
> there are dependencies between multiple vulnerabilities.
> 
> This is mostly code restructuring without functional changes, except where
> noted.
> 
> Compared to v4 this only includes bug fixes/cleanup. 

Reviewed-by: Josh Poimboeuf <jpoimboe@...nel.org>

-- 
Josh