linux-kernel - Re: [PATCH v10 3/5] x86/fpu: Parse clearcpuid= as early XSAVE argument

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <alpine.DEB.2.20.1710171714490.1932@nanos>
Date:   Tue, 17 Oct 2017 17:15:35 +0200 (CEST)
From:   Thomas Gleixner <tglx@...utronix.de>
To:     Andi Kleen <andi@...stfloor.org>
cc:     x86@...nel.org, linux-kernel@...r.kernel.org,
        Andi Kleen <ak@...ux.intel.com>
Subject: Re: [PATCH v10 3/5] x86/fpu: Parse clearcpuid= as early XSAVE
 argument

On Fri, 13 Oct 2017, Andi Kleen wrote:

> From: Andi Kleen <ak@...ux.intel.com>
> 
> With a followon patch we want to make clearcpuid affect the XSAVE
> configuration. But xsave is currently initialized before arguments
> are parsed. Move the clearcpuid= parsing into the special
> early xsave argument parsing code.
> 
> Since clearcpuid= contains a = we need to keep the old __setup
> around as a dummy, otherwise it would end up as a environment
> variable in init's environment.
> 
> Signed-off-by: Andi Kleen <ak@...ux.intel.com>

Reviewed-by: Thomas Gleixner <tglx@...utronix.de>