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Date: Wed, 26 Jan 2011 18:16:21 -0500
From: Dave Jones <davej@redhat.com>
Subject: Re: [PATCH 0/2][concept RFC] x86: BIOS-save kernel log to disk	upon
	panic
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To: "Luck, Tony" <tony.luck@intel.com>
Cc: Willy Tarreau <wtarreau@hera.kernel.org>, Dirk Hohndel <hohndel@infradead.org>, =?iso-8859-1?Q?Fr=E9d=E9ric?= Weisbecker <fweisbec@gmail.com>, FBDEV-ML <linux-fbdev@vger.kernel.org>, IDE-ML <linux-ide@vger.kernel.org>, Randy Dunlap <rdunlap@xenotime.net>, James Bottomley <James.Bottomley@suse.de>, "H. Peter Anvin" <hpa@zytor.com>, X86-ML <x86@kernel.org>, "Ahmed S. Darwish" <darwish.07@gmail.com>, Ingo Molnar <mingo@redhat.com>, Ingo Molnar <mingo@elte.hu>, Jeff Garzik <jgarzik@pobox.com>, Vivek Goyal <vgoyal@redhat.com>, Peter Zijlstra <a.p.zijlstra@chello.nl>, "Hohndel,
	Dirk" <dirk.hohndel@intel.com>, Borislav Petkov <bp@alien8.de>, Thomas Gleixner <tglx@linutronix.de>, Mark Lord <kernel@teksavvy.com>, Arjan van de Ven <arjan@infradead.org>, KEXEC-ML <kexec@lists.infradead.org>, LKML <linux-kernel@vger.kernel.org>, Haren Myneni <hbabu@us.ibm.com>, Eric Biederman <ebiederm@xmission.com>, Tejun Heo <tj@kernel.org>, Andrew Morton <akpm@linux-foundation.org>, Linus Torvalds <torvalds@linux-foundation.org>, Willy Tarreau <w@1wt.eu>

On Wed, Jan 26, 2011 at 03:07:44PM -0800, Luck, Tony wrote:
 > >- The latest approach (proposed by Linus) is to forget the disk: jump to
 > >  real-mode, but display the kernel log in a fancy format (with scroll
 > >  ups and downs) instead.
 > 
 > A while ago (first Plumbers conference?) someone was talking about
 > using a 2-d barcode to display the tail of the kernel log & oops
 > register data - with the plan that you could capture the image with
 > a cell phone camera, and then get all the oops data without worrying
 > about transcription errors as you wrote down & re-typed all the hex.
 > 
 > Anyone know what happened to that plan?

How is this more useful than a photograph of the backtrace ?

	Dave


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