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

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Message-ID: <4D3F6A28.1000402@pobox.com>
Date:	Tue, 25 Jan 2011 19:26:16 -0500
From:	Jeff Garzik <jgarzik@...ox.com>
To:	"H. Peter Anvin" <hpa@...or.com>
CC:	Randy Dunlap <rdunlap@...otime.net>,
	Mark Lord <kernel@...savvy.com>,
	"Ahmed S. Darwish" <darwish.07@...il.com>,
	James Bottomley <James.Bottomley@...e.de>,
	Tejun Heo <tj@...nel.org>, Ingo Molnar <mingo@...e.hu>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>, X86-ML <x86@...nel.org>,
	Tony Luck <tony.luck@...el.com>, Dave Jones <davej@...hat.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Willy Tarreau <wtarreau@...a.kernel.org>,
	Willy Tarreau <w@....eu>, Dirk Hohndel <hohndel@...radead.org>,
	Dirk.Hohndel@...el.com, IDE-ML <linux-ide@...r.kernel.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Linus Torvalds <torvalds@...ux-foundation.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>,
	Rusty Russell <rusty@...tcorp.com.au>
Subject: Re: [PATCH 0/2][concept RFC] x86: BIOS-save kernel log to disk upon
 panic

On 01/25/2011 05:58 PM, H. Peter Anvin wrote:
> "Not perfect" is really not good enough.  You're writing to the disk, so
> it *has* to be perfect.  That means dealing with having shared IDE/AHCI
> device and doing the right thing, and the possibility that the kernel
> has interrupts enabled, yadda yadda.
>
> In the end you end up with something that looks, again, like kexec/kdump.

Oh, quite agreed.  It wasn't an endorsement, just a reference :)

	Jeff



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