On Wed, Oct 28, 2015 at 11:15:30AM +0900, Joerg Roedel wrote: > Same here, you need to call the dma_sync* functions when passing data > from/to the virtio-device. Okay, forget about this comment. This patch only converts to dma_coherent allocations, which don't need synchronization. > I think a good test for that is to boot a virtio kvm-guest with > swiotlb=force and see if it still works. But this holds, Its a good way to test if your changes work with bounce-buffering. Together with DMA_API_DEBUG you also see if your specified dma_directions are right. Joerg -- To unsubscribe from this list: send the line "unsubscribe linux-s390" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
