Garrett D'Amore wrote:

*) For tx, just keep the addresses in low space for now. There should be enough space to find a few hundred MB of VA space for packet buffers under the 4GB limit. I don't think we need to support gigabytes of these after all. When the pool is exhausted, the system could internally resort to bcopy.

So we cripple performance on good NICs to help crippled NICs?
That's just so backwards.  How about we only use the pool and
resort to bcopy if the NIC cannot do 64-bit DMA?

Drew
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