[openib-general] Re: SDP: device mthca0 does not support fast memory regions

Roland Dreier roland at topspin.com
Thu Jun 16 16:06:33 PDT 2005


    Libor> Yeah, I had the same memory come back when I saw the error
    Libor> message.  I'll go back and look to apply the patch Michael
    Libor> submitted. Also does FMR registration currently perform the
    Libor> dma mapping, or does the consumer need to do it?

The consumer needs to do it mapping -- the FMR verbs are expecting DMA
addresses, the same as  ib_reg_phys_mr().  All the FMR code does is
take your addresses and stick them in the HCA's translation tables, so
the addresses you pass need to be bus addresses.

 - R.



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