linux-kernel - Re: x86: 4kstacks default

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Message-ID: <480B44C4.4060104@rtr.ca>
Date:	Sun, 20 Apr 2008 09:27:32 -0400
From:	Mark Lord <lkml@....ca>
To:	Willy Tarreau <w@....eu>
Cc:	Andi Kleen <andi@...stfloor.org>, Adrian Bunk <bunk@...nel.org>,
	Alan Cox <alan@...rguk.ukuu.org.uk>,
	Shawn Bohrer <shawn.bohrer@...il.com>,
	Ingo Molnar <mingo@...e.hu>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Arjan van de Ven <arjan@...radead.org>,
	Thomas Gleixner <tglx@...utronix.de>
Subject: Re: x86: 4kstacks default

Willy Tarreau wrote:
>
> What would really help would be to have 8k stacks with the lower page
> causing a fault and print a stack trace upon first access. That way,
> the safe setting would still report us useful information without
> putting users into trouble.
..

That's the best suggestion from this thread, by far!
Can you produce a patch for 2.6.26 for this?
Or perhaps someone else here, with the right code familiarity, could?

Some sort of CONFIG option would likely be wanted to
either enable/disable this feature, of course.

Cheers
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