RE: __get_free_pages() problem on ia64

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> > Ok, thanks, I will look into it. But the question is why do I get
> > addresses beyond 4G (virt_to_phys() of returned addresses) even when I
> > use GFP_DMA. Is this a known problem on ia64?
>
> All memory is DMAable as we have an IOMMU.  ZONE_DMA doesn't mean what
> you think it means.

You have an IOMMU ... but not all ia64 systems do (hence the need for swiotlb).

-Tony
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