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SubjectRe: [openib-general] Re: [PATCH 21 of 53] ipath - use phys_to_virt instead of bus_to_virt
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    Grant> Aren't remote addresses handled differently than local
Grant> ones? ULP has to map local addresses. We can't map remote
Grant> ones (remote host maps it). The ULP must know the
Grant> difference and can tell the lower level driver which is
Grant> which.

The problem is that RDMA requests have to be handled by the low-level
driver (or hardware) without any ULP involvement. So every device has
to handle getting messages like "send me XXX bytes of data from
address YYY in the memory region corresponding to R_Key ZZZ."

- R.
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