Re: linux-next: build failure after merge of the final tree (slab tree related)

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On Tue, 24 Aug 2010, Pekka Enberg wrote:

> On 24.8.2010 20.59, Christoph Lameter wrote:
> > On Tue, 24 Aug 2010, Pekka Enberg wrote:
> >
> > > Thanks for the report. The problem should be fixed by this commit:
> >
> > Its not that easy. __alloc_percpu falls back to kzalloc() on UP and this
> > can result in unique bootstrap problems with UP since the bootstrap array
> > is no longer there. Does the UP kernel boot?
>
> No, I get this under kvm:

> [    0.000000] Kernel panic - not syncing: Cannot create slab kmem_cache
> size=232 realsize=256 order=0 offset=0 flags=42000

alloc per cpu result in kmalloc which fails.

Tejon: Is there some way we could get a reserved per cpu area under UP
instead of fallback to slab allocations during bootup?
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