[openib-general] Re: DMA mapping on sparc64
Roland Dreier
roland at topspin.com
Tue Sep 14 21:13:04 PDT 2004
Michael> I think this is going to break anyway when you actually
Michael> have more than 4G memory that you can DMA into. I think
Michael> its more portable to allocate mads out of some pool,
Michael> registering this pool with an lkey.
Oh yeah... I forgot to mention that the MAD pool idea doesn't help for
IPoIB, SDP, ... (where we can't control where the buffers we need to
use are allocated)
- R.
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