linux-kernel - Re: [PATCH] panic.c: export panic_on

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Message-Id: <1255354342.30919.17.camel@macbook.infradead.org>
Date:	Mon, 12 Oct 2009 14:32:22 +0100
From:	David Woodhouse <dwmw2@...radead.org>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	Alan Cox <alan@...rguk.ukuu.org.uk>,
	Simon Kagstrom <simon.kagstrom@...insight.net>,
	Artem Bityutskiy <dedekind1@...il.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	"Koskinen Aaro (Nokia-D/Helsinki)" <aaro.koskinen@...ia.com>,
	linux-mtd <linux-mtd@...ts.infradead.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] panic.c: export panic_on_oops

On Mon, 2009-10-12 at 15:25 +0200, Ingo Molnar wrote:
> 
> I care about this because i still havent given up hope that the company 
> you are working for will finally give us some permanent storage in the 
> CPU itself, so that we can have cross-reboot printk buffering ;-) 

Why would it have to be in the CPU? If we had decent firmware, couldn't
we just look at the old kernel's log_buf in RAM?

On machines where coreboot is supported (which is mostly machines
_other_ than those from my employer, unfortunately), you ought to be
able to do this today.

-- 
dwmw2

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