Re: DMA API issues

[David Brownell]

James Bottomley wrote:

> The iseries can't because the PCI bus sits behind the hypervisor and has
> to use accessors to get at the on chip memory, it can't simply be mapped
> into the address space like it can on ARM.

So you're saying that the iSeries can't implement dma_alloc_coherent()
for such hardware, yes?  In that case, it should return a polite failure
status.  Meanwhile, hardware that _can_ implement it should do so.

- Dave


-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/