linux-kernel - Re: [PATCH 2/3] x86, MCE: Drop default decoding notifier

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Message-ID: <20110413143917.GD2791@aftab>
Date:	Wed, 13 Apr 2011 16:39:17 +0200
From:	Borislav Petkov <bp@...64.org>
To:	Prarit Bhargava <prarit@...hat.com>
Cc:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Russ Anderson <rja@....com>,
	"Luck, Tony" <tony.luck@...el.com>,
	"dzickus@...hat.com" <dzickus@...hat.com>,
	"mstowe@...hat.com" <mstowe@...hat.com>,
	"dnelson@...hat.com" <dnelson@...hat.com>,
	"rja@...ricas.sgi.com" <rja@...ricas.sgi.com>
Subject: Re: [PATCH 2/3] x86, MCE: Drop default decoding notifier

On Wed, Apr 13, 2011 at 10:32:35AM -0400, Prarit Bhargava wrote:
> 
> >> .. right ... but we would still see nonsensical messages before the
> >> panic, which will confuse the end user.  IMO, dump the messages unless
> >> it's UC.  And we shouldn't print out the human readable message at all.
> >>     
> > I'd still leave the "mcelog ... " line though as a hint.
> >
> >   
> 
> :)
> 
> There are no messages -- that's part of the problem.  We're asking a
> user to do something for a message that doesn't exist ...

Yes and no - in the UC case you get all the MCA registers dumped in
print_mce() - and those you want to decode. In the CE case, we won't be
issuing any with the default notifier removed. I just sent you a -v2, I
think it should do what we want.

Or am I missing something...?

Thanks.

-- 
Regards/Gruss,
Boris.

Advanced Micro Devices GmbH
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