Re: [GIT PULL] SLAB changes for v2.6.39-rc1

From: Ingo Molnar
Date: Thu Mar 24 2011 - 14:59:28 EST



* Pekka Enberg <penberg@xxxxxxxxxx> wrote:

> On Thu, Mar 24, 2011 at 8:47 PM, Christoph Lameter <cl@xxxxxxxxx> wrote:
> >
> > On Thu, 24 Mar 2011, Eric Dumazet wrote:
> >
> >> > this_cpu_cmpxchg16b_emu:
> >> >         pushf
> >> >         cli
> >> >
> >> >         cmpq %gs:(%rsi), %rax
> >
> >> Random guess
> >>
> >> Masking interrupts, and accessing vmalloc() based memory for the first
> >> time ?
> >
> > Hmmm.. Could be. KVM would not really disable interrupts so this may
> > explain that the test case works here.
> >
> > Simple fix would be to do a load before the cli I guess.
>
> Btw, I tried Ingo's .config and it doesn't boot here so it's somehow
> .config related.

did you get a similar early crash as i? I'd not expect my .config to have all
the drivers that are needed on your box.

Thanks,

Ingo
--
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/