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Date:	Fri, 17 Nov 2006 09:29:28 -0500
From:	Lennart Sorensen <lsorense@...lub.uwaterloo.ca>
To:	Stefan Richter <stefanr@...6.in-berlin.de>
Cc:	"Protasevich, Natalie" <Natalie.Protasevich@...SYS.com>,
	Jesper Juhl <jesper.juhl@...il.com>,
	linux-kernel@...r.kernel.org
Subject: Re: How to go about debuging a system lockup?

On Fri, Nov 17, 2006 at 02:43:36PM +0100, Stefan Richter wrote:
> If the PCI bus itself isn't brought down, you could debug from remote
> using Benjamin Herrenschmidt's Firescope on the remote node and a
> FireWire card in the test machine. Once the ohci1394 driver was loaded,
> the FireWire controller is able to read and write to the 32bit PCI
> address range (and thus to system memory) without assistance of
> interrupt handlers.

Wow, that looks really neat.  I will have to go read up on that tool.

--
Len Sorensen
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