Date: Wed, 16 Nov 2005 14:51:16 +0100
From: =?iso-8859-1?Q?J=F6rn?= Engel <joern@wohnheim.fh-wedel.de>
To: Andi Kleen <ak@suse.de>
Cc: Arjan van de Ven <arjan@infradead.org>, alex14641@yahoo.com,
       linux-kernel@vger.kernel.org
Subject: Re: [2.6 patch] i386: always use 4k stacks
Message-ID: <20051116135116.GA24753@wohnheim.fh-wedel.de>
References: <20051116005034.73421.qmail@web50210.mail.yahoo.com> <1132128212.2834.17.camel@laptopd505.fenrus.org> <20051116111812.4a1ea18a.grundig@teleline.es> <1132137638.2834.29.camel@laptopd505.fenrus.org> <p73oe4kpx6n.fsf@verdi.suse.de>
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On Wed, 16 November 2005 13:57:36 +0100, Andi Kleen wrote:
> 
> I think it's in general risky. It's like balancing without a safety
> net.  Might be a nice hobby, but for real production you want a safety
> net.  That's simple because there are likely some code paths through
> the code that need more stack space and that are rarely hit (and
> cannot be easily found by static analysis, e.g. if they involve
> indirect pointers or particularly complex configuration setups).

It isn't that hard to find such places.  Trouble is that you find so
many of them and it takes quite a while to go through them all.  Years
is a good unit for "quite a while".

J?rn

-- 
With a PC, I always felt limited by the software available. On Unix, 
I am limited only by my knowledge.
-- Peter J. Schoenster
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