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SubjectRe: DMA API issues
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On Sun, 2004-06-20 at 13:02, Oliver Neukum wrote:
> > The DMA API is about allowing devices to transact directly with memory
> > behind the memory controller, it's an API that essentially allows the
> > I/O controller and memory controller to communicate without CPU
> > intervention. This is still possible through the hypervisor, so the
> > iSeries currently fully implements the DMA API.
>
> Then what's the problem?

If you look at the diagram, you'll see that the OHCI memory isn't behind
the memory controller...

James


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