[openib-general] [RFC/BUG] DMA vs. CQ race

Roland Dreier rdreier at cisco.com
Mon Feb 26 14:27:42 PST 2007


 > On our cell blade + PCI-e Mellanox.

I don't see anything in arch/powerpc that looks like
dma_alloc_coherent() will do anything other than allocate some memory
and map it with DMA_BIDIRECTIONAL.  So how does this altix fix help in
your situation?  Am I misreading the Cell IOMMU code?

 - R.




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