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

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Message-Id: <1255358181.9111.14.camel@macbook.infradead.org>
Date:	Mon, 12 Oct 2009 15:36:21 +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 16:26 +0200, Ingo Molnar wrote:
> Not if the failure is say a s2ram hang that requires a power cycle. Also 
> there are certain classes of bugs that only occur on cold boot. Plus 
> there's the "need to unplug the battery to revive the system" class of 
> bugs (but they are rare).

So you need to build in enough ECC to cope with the decay which happens
when RAM isn't being refreshed for a few seconds... :)

> So i think the MTD / flash stuff is powerful. 

Yeah, definitely. I was just pointing out that we can actually do a lot
better on today's commodity hardware too.

-- 
dwmw2

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