linux-kernel - Re: [PATCH v3 2/4] x86/traps: Print non-canonical address on #GP

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Date:   Wed, 20 Nov 2019 12:24:08 +0100
From:   Borislav Petkov <bp@...en8.de>
To:     Ingo Molnar <mingo@...nel.org>
Cc:     Jann Horn <jannh@...gle.com>, Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>,
        "H. Peter Anvin" <hpa@...or.com>, x86@...nel.org,
        Andrey Ryabinin <aryabinin@...tuozzo.com>,
        Alexander Potapenko <glider@...gle.com>,
        Dmitry Vyukov <dvyukov@...gle.com>, kasan-dev@...glegroups.com,
        linux-kernel@...r.kernel.org,
        Andrey Konovalov <andreyknvl@...gle.com>,
        Andy Lutomirski <luto@...nel.org>,
        Sean Christopherson <sean.j.christopherson@...el.com>,
        Andi Kleen <ak@...ux.intel.com>
Subject: Re: [PATCH v3 2/4] x86/traps: Print non-canonical address on #GP

On Wed, Nov 20, 2019 at 12:18:59PM +0100, Ingo Molnar wrote:
> How was this maximum string length of '90' derived? In what way will
> that have to change if someone changes the message?

That was me counting the string length in a dirty patch in a previous
thread. We probably should say why we decided for a certain length and
maybe have a define for it.

Also, I could use your opinion on this here:

https://lkml.kernel.org/r/20191118164407.GH6363@zn.tnic

and the following mail.

I think that marking the splat with its number would *immensely* help us
with the question: was this the first splat or wasn't? A question we've
been asking since I got involved in kernel development. :)

-- 
Regards/Gruss,
    Boris.

https://people.kernel.org/tglx/notes-about-netiquette