From: Ralph Campbell <[EMAIL PROTECTED]> Date: Wed, 12 Jul 2006 16:29:27 -0700
> Currently, the ib_ipath driver requires that the mapping be > one-to-one since there is no practical way to reverse IOMMU > mappings. You can maintain a hash table that maps DMA addresses back to kernel mappings. Depending upon your situation, you can optimize this to use very small keys if you have some kind of other identification method for your buffers. That would be for dynamic mappings. You were using consistent DMA memory, which I gather you're not, you could use the PCI DMA pool mechanism. _______________________________________________ openib-general mailing list openib-general@openib.org http://openib.org/mailman/listinfo/openib-general To unsubscribe, please visit http://openib.org/mailman/listinfo/openib-general
