The dmapool code uses dma_alloc_coherent to allocate each element, and dma_alloc_coherent must align to ARCH_DMA_MINALIGN already. If you implementation doesn't do that it needs to be fixed. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx"> email@xxxxxxxxx </a>