Re: [PATCH 3/4] Embed zone_id information within the zonelist->zones pointer

Andi Kleen
2007-08-14T00:16:24Z

On Mon, Aug 13, 2007 at 04:12:17PM -0700, Christoph Lameter wrote:
> On Tue, 14 Aug 2007, Andi Kleen wrote:
>
> > > What would be the point?
> >
> > "so that drivers not need to ifdef"
>
> But they use GFP_DMA right now and drivers cannot use DMA32 if they want

The way it was originally designed was that they use GFP_DMA32,
which would map to itself on x86-64, to GFP_DMA on ia64 and to
GFP_KERNEL on i386. Unfortunately that seems to have bitrotted
(perhaps I should have better documented it)

> to be cross platforms compatible? Doesnt the dma API completely do away
> with these things?

No GFP_DMA32 in my current plan is still there.

-Andi