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: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <20230812113256.GC749618@hirez.programming.kicks-ass.net>
Date:   Sat, 12 Aug 2023 13:32:56 +0200
From:   Peter Zijlstra <peterz@...radead.org>
To:     Borislav Petkov <bp@...en8.de>
Cc:     Josh Poimboeuf <jpoimboe@...nel.org>, x86@...nel.org,
        linux-kernel@...r.kernel.org, David.Kaplan@....com,
        Andrew.Cooper3@...rix.com, gregkh@...uxfoundation.org
Subject: Re: [RFC][PATCH 06/17] x86/cpu: Add SRSO untrain to retbleed=

On Fri, Aug 11, 2023 at 12:27:48PM +0200, Borislav Petkov wrote:
> On Thu, Aug 10, 2023 at 12:10:03PM -0400, Josh Poimboeuf wrote:
> > I tend to agree that SRSO is a new issue and should have its own sysfs
> > and cmdline options (though a separate CONFIG option is overkill IMO).
> 
> Yeah, there's a patch floating around adding a config option for every
> mitigation. Apparently people want to build-time disable them all.

So I really hate that .Kconfig explosion, that's the very last thing we
need :-( More random options that can cause build time trouble.

I might see value in one knob that kills all speculation nonsense at
build time, but not one per mitigation, that's maddness.

Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ