Matthew Wilcox wrote:
On Mon, Feb 25, 2008 at 11:40:35PM +0100, Andi Kleen wrote:
(I must have fixed it somehow because it works on parisc, which is most
unforgiving of drivers which do DMA without the DMA API).
At least on x86 the DMA API cannot do ISA bouncing.
You're saying that if I set a 24-bit DMA mask, and then do a
pci_alloc_coherent(), x86 might hand me back something that's not
accessible? That would be just broken.
Indeed.
Jeff
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