On Thu, 21 May 2009 13:18:54 -0700 Jeremy Fitzhardinge <jer...@goop.org> wrote:
> Becky Bruce wrote: > > I can work with that, but it's going to be a bit inefficient, as I > > actually need the dma_addr_t, not the phys_addr_t, so I'll have to > > convert. In every case, this is a conversion I've already done and > > that I need in the calling code as well. Can we pass in both the > > phys_addr_t and the dma_addr_t? > > The Xen implementation would needs to do the phys to bus conversion page > by page anyway, so it wouldn't help much. But it also wouldn't hurt. > > How expensive is the phys-to-bus conversion on power? Is it worth > making the interface more complex for? Would passing phys+bus mean that > we wouldn't also need to pass dev? I don't think so. POWERPC needs it. _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-dev
