> What about allowing to allocate coherent memory for CQ inside the kernel > to fix issue with Altix machines?
Sorry... I've been remiss in posting about this. I would actually prefer to see an extension to the dma_map_sg() interface (a new flag perhaps?) that would set the right magic bit in the DMA address on altix. The refactoring of ib_umem_get() to be called by low-level drivers makes this a fairly clean approach, and it avoids the problems with using dma_alloc_coherent() to allocate userspace buffers (for example, dma_alloc_coherent() uses up kernel virtual addresses, which may be scarce on 32 bit architectures). - 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
