Re: [PATCH][RFC] 4K stacks default, not a debug thing any more...?

Ray Lee
2007-07-16T22:53:39Z

On 7/16/07, Alan Cox <alan@lxorguk.ukuu.org.uk> wrote:
> > If at some point one of the pro-4k stacks crowd can prove that all
> > code paths are safe, or introduce another viable alternative (such as
> > Matt's idea for extending the stack dynamically), then removing the 8k
> > stacks option makes sense.
>
> Any x86-32 path unsafe with 4K stacks is almost certainly unsafe with 8K
> stacks because the 8K stacks do not have seperate IRQ stack paths, so you
> have the same space but split. It might be less predictable on 8K stacks
> but it isn't absent.

Understood, but isn't that an argument pro interrupt stacks, rather
than one against 8k? wli has a patch to break out the interrupt stack
feature from the 4k/8k choice.