On 16 Mar 2005, at 18:42, Jesse Barnes wrote:
The AGP driver is only configurable for ppc32, alpha, x86, x86_64 and ia64, all of which have virt_to_bus.
Yeah, but that doesn't mean it makes sense on all those platforms. The
biggest problem with virt_to_bus (well, depending on who you talk to) is that
it can't handle systems where the address translation must be done
differently depending on *which* bus we're getting a bus address for. Not
sure what makes sense in this case though... is the DMA mapping interface
appropriate?
I think that makes sense. How much code refactoring is needed to make use of it, though?
Certainly it will work for Xen and it sounds better than virt_to_bus/bus_to_virt, if someone will cook up the alternative patch. Otherwise, virt_to_bus seems better than the status quo. :-)
-- Keir
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