> Roland, do you think that the memcpy_toio() call might mess things up?
I wouldn't think so, although I don't have full details of how your hardware behaves to know for sure. I assume your PCI bus/memory controller is already smart enough to deal with HCR writes being interleaved with writes to a doorbell page from userspace, so it seems that writes to locally attached memory should be OK too, as long as the HCR writes are word-sized in the right order etc. > Maybe we need "wmb()" or "mmiowb()" here as well? I don't see any reason, although I often miss things. It seems that the only thing that cares about the writes of the address info being done would be posting a send WQE that uses it, and that should already have sufficient ordering. What would we be ordering things against? - R. _______________________________________________ general mailing list [email protected] http://lists.openfabrics.org/cgi-bin/mailman/listinfo/general To unsubscribe, please visit http://openib.org/mailman/listinfo/openib-general
