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

Andi Kleen
2005-11-17T14:42:27Z

On Wednesday 16 November 2005 20:03, Benjamin LaHaise wrote:
> On Wed, Nov 16, 2005 at 07:45:08PM +0100, Adrian Bunk wrote:
> > The problem is similar no matter whether you have 4k or 8k stacks, but
> > with 4k stacks you have the additional benefits of order 0 allocations
> > and less memory usage.
>
> We could implement a stack guard page for the transition period, so that
> any stack overflows would end up generating a fault. That's easy enough
> to do by using vmalloc()

And would add considerable overhead in TLB flushes and locking ...

-Andi