linux-kernel - RE: [PATCH 0/2][concept RFC] x86: BIOS-save kernel log to disk upon panic

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Date:	Wed, 26 Jan 2011 15:07:44 -0800
From:	"Luck, Tony" <tony.luck@...el.com>
To:	"Ahmed S. Darwish" <darwish.07@...il.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>
CC:	Ingo Molnar <mingo@...e.hu>, "H. Peter Anvin" <hpa@...or.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>, X86-ML <x86@...nel.org>,
	Dave Jones <davej@...hat.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Randy Dunlap <rdunlap@...otime.net>,
	Willy Tarreau <wtarreau@...a.kernel.org>,
	Willy Tarreau <w@....eu>, Dirk Hohndel <hohndel@...radead.org>,
	"Hohndel, Dirk" <dirk.hohndel@...el.com>,
	IDE-ML <linux-ide@...r.kernel.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Frédéric Weisbecker <fweisbec@...il.com>,
	Borislav Petkov <bp@...en8.de>,
	Arjan van de Ven <arjan@...radead.org>,
	Tejun Heo <tj@...nel.org>,
	James Bottomley <James.Bottomley@...e.de>,
	Mark Lord <kernel@...savvy.com>,
	Jeff Garzik <jgarzik@...ox.com>,
	Eric Biederman <ebiederm@...ssion.com>,
	Vivek Goyal <vgoyal@...hat.com>,
	Haren Myneni <hbabu@...ibm.com>,
	KEXEC-ML <kexec@...ts.infradead.org>,
	FBDEV-ML <linux-fbdev@...r.kernel.org>
Subject: RE: [PATCH 0/2][concept RFC] x86: BIOS-save kernel log to disk	upon
 panic

>- 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?

-Tony


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