Re: alpha iommu fixes

Alan Cox (alan@lxorguk.ukuu.org.uk)
Mon, 21 May 2001 08:47:40 +0100 (BST)

> Andrew Morton writes:
> > Well this is news to me. No drivers understand this.
> > How long has this been the case? What platforms?
>
> The DMA interfaces may never fail and I've discussed this over and
> over with port maintainers a _long_ time ago.

And how do you propose to implemnt cache coherent pci allocations on machines
which lack the ability to have pages coherent between I/O and memory space ?
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