Re: [Q] Why does dma_alloc_coherent() of ia64 GFP_DMA?

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On Mon, 10 Nov 2008 13:59:57 +0100
Andi Kleen <andi@xxxxxxxxxxxxxx> wrote:

> Also I believe there are some issues with non continuous memory on
> some IA64 systems -- e.g. Altixes iirc have the requirement
> that you use the IOMMU for higher memory. So it's probably
> not easy to change.

Are you talking about this odd dma requirement?

http://www.gelato.unsw.edu.au/archives/linux-ia64/0305/5604.html
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