linux-kernel - Re: [ANNOUNCE] Merkey's Kernel Debugger

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Message-ID: <20080807221106.734a8da3@kopernikus.site>
Date:	Thu, 7 Aug 2008 22:11:06 +0200
From:	Bernhard Walle <bwalle@...e.de>
To:	Andi Kleen <andi@...stfloor.org>
Cc:	Jay Lan <jlan@....com>,
	Christoph Lameter <cl@...ux-foundation.org>,
	Stefan Richter <stefanr@...6.in-berlin.de>,
	Nick Piggin <nickpiggin@...oo.com.au>,
	jmerkey@...fmountaingroup.com,
	Geert Uytterhoeven <geert@...ux-m68k.org>,
	Josh Boyer <jwboyer@...il.com>, linux-kernel@...r.kernel.org,
	Takenori Nagano <t-nagano@...jp.nec.com>,
	Vivek Goyal <vgoyal@...hat.com>, Keith Owens <kaos@....com.au>
Subject: Re: [ANNOUNCE] Merkey's Kernel Debugger

* Andi Kleen <andi@...stfloor.org> [2008-08-07 22:09]:
>
> On Thu, Aug 07, 2008 at 10:07:37PM +0200, Bernhard Walle wrote:
> > * Andi Kleen <andi@...stfloor.org> [2008-08-07 22:06]:
> > >
> > > > To merge KDB or any other RAS tools, you need to deal with kdump. Kdump
> > > > hijack panic() before the die calling chain. For KDB or a RAS tool to
> > > 
> > > Imho kdump should just be fixed to use die chains.
> > 
> > Well, we had that discussion several times. I'm not against it
> > (instead, I would like it), but I don't think that repeating the
> > discussion over and over does help ...
> 
> Just needs some code? 

No, it was rejected with the argument that in panic case, as less code
as possible should be executed before kexec'ing the panic kernel.

See also: http://kerneltrap.org/node/14050 (for example)



Bernhard
-- 
Bernhard Walle, SUSE LINUX Products GmbH, Architecture Development
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