Re: x86: 4kstacks default

[Adrian Bunk]

On Sun, Apr 20, 2008 at 09:05:40AM -0500, Eric Sandeen wrote:
> Adrian Bunk wrote:
> 
> > But the more users will get 4k stacks the more testing we have, and the 
> > better both existing and new bugs get shaken out.
> > 
> > And if there were only 4k stacks in the vanilla kernel, and therefore 
> > all people on i386 testing -rc kernels would get it, that would give a 
> > better chance of finding stack regressions before they get into a 
> > stable kernel.
> 
> Heck, maybe you should make it 2k by default in all -rc kernels; that
> way when people run -final with the 4k it'll be 100% bulletproof, right?
>  'cause all those piggy drivers that blow a 2k stack will finally have
> to get fixed?

I'm arguing for aiming at having all 32bit architectures with 4k page 
size using the same stack size. Not for having -rc kernels differ from 
release kernels.

>  Or leave it at 2k and find a way to share pages for
> stacks, think how much memory you could save and how many java threads
> you could run!

The only architecture that already defaults to 4k stacks is m68knommu, 
and I doubt they do it for many java threads...

>...
> -Eric
>...

cu
Adrian

-- 

       "Is there not promise of rain?" Ling Tan asked suddenly out
        of the darkness. There had been need of rain for many days.
       "Only a promise," Lao Er said.
                                       Pearl S. Buck - Dragon Seed

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/