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From:   Andi Kleen <ak@linux.intel.com>
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Subject: Re: [PATCH v2 00/16] Multigenerational LRU Framework
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> Now imagine we have an 8 node system, and memory
> pressure in the DMA32 zone of node 0.

The question is how much do we still care about DMA32.
If there are problems they can probably just turn on the IOMMU for
these IO mappings.

-Andi