linux-kernel - Re: [PATCH] Update documentation to reflect what TAINT_CPU_OUT_OF

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Message-ID: <20201208105439.23e2349b@lwn.net>
Date:   Tue, 8 Dec 2020 10:54:39 -0700
From:   Jonathan Corbet <corbet@....net>
To:     Mathieu Chouquet-Stringer <me@...hieu.digital>
Cc:     Borislav Petkov <bp@...en8.de>, Stephen Kitt <steve@....org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Kees Cook <keescook@...omium.org>,
        "Guilherme G. Piccoli" <gpiccoli@...onical.com>,
        Eric Biggers <ebiggers@...gle.com>,
        Randy Dunlap <rdunlap@...radead.org>,
        Qais Yousef <qais.yousef@....com>,
        Naoki Hayama <naoki.hayama@...eo.co.jp>,
        Yue Hu <huyue2@...ong.com>, linux-doc@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] Update documentation to reflect what
 TAINT_CPU_OUT_OF_SPEC means nowadays

On Wed,  2 Dec 2020 16:32:43 +0100
Mathieu Chouquet-Stringer <me@...hieu.digital> wrote:

> 	Hello Jonathan,
> 
> Here's a patch updating the meaning of TAINT_CPU_OUT_OF_SPEC after
> Borislav introduced changes in a7e1f67ed29f and upcoming patches in tip.
> 
> TAINT_CPU_OUT_OF_SPEC now means a bit more what it implies as the
> flag isn't set just because of a CPU misconfiguration or mismatch.
> Historically it was for SMP kernel oops on an officially SMP incapable
> processor but now it also covers CPUs whose MSRs have been incorrectly
> poked at from userspace, drivers being used on non supported
> architectures, broken firmware, mismatched CPUs, ...
> 
> Update documentation and script to reflect that.
> 
> Signed-off-by: Mathieu Chouquet-Stringer <me@...hieu.digital>

Hearing no objection, I've applied this.

Thanks,

jon