Re: [2.6 patch] i386: always use 4k stacks

["Jeff V. Merkey" <jmerkey@wolfmountaingroup.com>]

Andrew,

Thanks. I concur.

Jeff

Andrew Morton wrote:

> Adrian Bunk <bunk@stusta.de> wrote:
>  
>
> > This patch was already sent on:
> > - 11 Dec 2005
> > - 5 Dec 2005
> > - 30 Nov 2005
> > - 23 Nov 2005
> > - 14 Nov 2005
> >    
>
> Sigh.  I saw the volume of email last time and though "gee, glad I wasn't
> cc'ed on that lot".
>
> Supporting 8k stacks is a small amount of code and nobody has seen a need
> to make changes in there for quite a long time.  So there's little cost to
> keeping the existing code.
>
> And the existing code is useful:
>
> a) people can enable it to confirm that their weird crash was due to a
>   stack overflow.
>
> b) If I was going to put together a maximally-stable kernel for a
>   complex server machine, I'd select 8k stacks.  We're still just too
>   squeezy, and we've had too many relatively-recent overflows, and there
>   are still some really deep callpaths in there.
>
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