linux-kernel - Re: [PATCH][RFC] 4K stacks default, not a debug thing any more...?

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Message-ID: <46A9ED28.3070508@sandeen.net>
Date:	Fri, 27 Jul 2007 08:03:36 -0500
From:	Eric Sandeen <sandeen@...deen.net>
To:	Alan Cox <alan@...rguk.ukuu.org.uk>
CC:	Andrea Arcangeli <andrea@...e.de>, Matt Mackall <mpm@...enic.com>,
	Rene Herman <rene.herman@...il.com>,
	Ray Lee <ray-lk@...rabbit.org>, Bodo Eggert <7eggert@....de>,
	Jeremy Fitzhardinge <jeremy@...p.org>,
	Jesper Juhl <jesper.juhl@...il.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	William Lee Irwin III <wli@...omorphy.com>,
	David Chinner <dgc@....com>,
	Arjan van de Ven <arjan@...radead.org>
Subject: Re: [PATCH][RFC] 4K stacks default, not a debug thing any more...?

Alan Cox wrote:
>> About 4k stacks I was generally against them, much better to fail in
>> fork than to risk corruption. The per-irq stack part is great feature
>> instead (too bad it wasn't enabled for the safer 8k stacks).
> 
> 8K stacks without IRQ stacks are not "safer" so I don't understand your
> comment ?

Hmm was it SuSE or RH kernels (or mainline?) I saw which had a test to
defer soft IRQs if they occurred too deep in the stack for the current
thread.

-Eric
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