linux-kernel - Re: [PATCH UPDATE] deflate stack usage in lib/inflate.c

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Message-Id: <200704130137.57323.ak@suse.de>
Date:	Fri, 13 Apr 2007 01:37:57 +0200
From:	Andi Kleen <ak@...e.de>
To:	Jan Engelhardt <jengelh@...ux01.gwdg.de>
Cc:	Jeremy Fitzhardinge <jeremy@...p.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Tim Yamin <plasmaroo@...too.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH UPDATE] deflate stack usage in lib/inflate.c

On Friday 13 April 2007 01:20:40 Jan Engelhardt wrote:
> 
> On Apr 12 2007 15:39, Jeremy Fitzhardinge wrote:
> >Andi Kleen wrote:
> >> Hmm, does Xen perhaps not use interrupt stacks? Normally 2.7k should be still
> >> green as long as there are not too many functions above/below it.
> >
> >That's a good point, I'll need to check that.  Still, nearly 3k of stack!
> 
> I bite. Would compressing the vmlinux binary with LZO or LZMA make an
> improvement to the bootstrap uncompress stack usage?

We don't care about the stack usage, as long as it doesn't overflow.
It's a very limited piece of code that doesn't run on top or below
other subsystems.

-Andi
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