Re: [13/18] x86_64: Allow fallback for the stack
From: Peter Zijlstra
Date: Thu Oct 04 2007 - 08:30:27 EST
On Thu, 2007-10-04 at 14:25 +0200, Andi Kleen wrote:
> > The order-1 allocation failures where GFP_ATOMIC, because SLUB uses !0
> > order for everything.
>
> slub is wrong then. Can it be fixed?
I think mainline slub doesn't do this, just -mm.
See DEFAULT_MAX_ORDER in mm/slub.c
> > Kernel stack allocation is GFP_KERNEL I presume.
>
> Of course.
>
> > Also, I use 4k stacks on all my machines.
>
> You don't have any x86-64 machines?
Ah, my bad, yes I do, but I (wrongly) thought they had that option too.
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