Re: [2.6 patch] i386: always use 4k stacks
From: Andi Kleen
Date: Wed Nov 16 2005 - 11:17:56 EST
On Wednesday 16 November 2005 16:38, Arjan van de Ven wrote:
> On Wed, 2005-11-16 at 16:30 +0100, Oliver Neukum wrote:
> > Am Mittwoch, 16. November 2005 15:42 schrieb jmerkey:
> > > Map a blank ro page beneath the address range when stack memory is
> > > mapped is trap on page faults to the page when folks go off the end of
> > > th e stack.
> > >
> > > Easy to find.
> > Provided you can easily trigger it. I don't see how that is a given.
> the same is true for a unified 8k stack or for the 4k/4k split though.
> Ok sure there's a 1.5Kb difference on the one side.. (but a 2Kb gain on
> the other side)
I was always in favour of 8K process stacks + irq stacks. Works great on x86-64.
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