Messages in this thread | | | Subject | Re: [PATCH 5 of 13] ipath - use proper address translation routine | From | Roland Dreier <> | Date | Tue, 02 May 2006 07:24:18 -0700 |
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Christoph> Or stop doing the dma mapping in the IB upper level Christoph> drivers. I told you that we'll get broken hardware Christoph> that doesn't want dma mapping in the upper level Christoph> driver, and pathscale created exactly that :)
But see my earlier mail to Arjan about RDMA -- what address can a protocol (eg SRP initiator) put in a message that the other side will use to initiate a remote DMA operation? It seems to me it has to be a bus address, and that means that the protocol has to do the DMA mapping.
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