Re: [PATCHSET] percpu: generalize first chunk allocators and improvelpage NUMA support

[H. Peter Anvin]

Andi Kleen wrote:
>>>
>> *Ahem* virtual machines *ahem*...
> 
> And? Even there's not that big typically. 
> 
> The traditional problem was just for 128 NR_CPUs kernel were nothing
> was sized based on machine capacity.
> 
> Also on large systems the VMs shouldn't be sized for full capacity.
> 

We have already have cases where the "possible" CPUs have eaten up the
entire vmalloc area on 32 bits.  In real use.  It's a real problem.

	-hpa

-- 
H. Peter Anvin, Intel Open Source Technology Center
I work for Intel.  I don't speak on their behalf.

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