linux-kernel - Re: [PATCH v3 0/2] x86/fault: Further improve #PF oops messages

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Message-ID: <20190228154433.GB6166@linux.intel.com>
Date:   Thu, 28 Feb 2019 07:44:33 -0800
From:   Sean Christopherson <sean.j.christopherson@...el.com>
To:     Dave Hansen <dave.hansen@...ux.intel.com>,
        Andy Lutomirski <luto@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        "x86@...nel.org" <x86@...nel.org>
Cc:     "H. Peter Anvin" <hpa@...or.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Rik van Riel <riel@...riel.com>,
        "Yu, Yu-cheng" <yu-cheng.yu@...el.com>,
        Ingo Molnar <mingo@...nel.org>
Subject: Re: [PATCH v3 0/2] x86/fault: Further improve #PF oops messages

High latency ping.  These still apply as-is.

On Fri, Dec 21, 2018 at 01:36:55PM -0800, Sean Christopherson wrote:
> Rework the messages printed for #PF oopses to display more detailed
> information about the fault in human readable form and to avoid
> conflicting messages and/or statements that may not always be accurate.
> 
> v3:
>   - Prepend a patch to reword the initial BUG message
>   - Add sample output in the changelogs
>   - Swap the order of the #PF lines.  For most cases the three main lines
>     show up in reverse fir-tree ordering and the cause of the fault is
>     easy to pick out since it's the last thing highlighted by pr_alert
>     (excepting when dumping the IDT, GDT, etc...).
> 
> v2:
>   - Explicitly call out protection keys violations
>   - "Slightly" reword the changelog
> 
> v1: https://lkml.kernel.org/r/20181207195223.23968-1-sean.j.christopherson@intel.com
> v2: https://lkml.kernel.org/r/20181207184423.1962-1-sean.j.christopherson@intel.com
> 
> Sean Christopherson (2):
>   x86/fault: Reword initial BUG message for unhandled page faults
>   x86/fault: Decode and print #PF oops in human readable form
> 
>  arch/x86/mm/fault.c | 51 +++++++++++++++------------------------------
>  1 file changed, 17 insertions(+), 34 deletions(-)
> 
> -- 
> 2.19.2
>