On 29/12/17 08:18, Christoph Hellwig wrote: > Almost every architecture supports a direct dma mapping implementation, > where no iommu is used and the device dma address is a 1:1 mapping to > the physical address or has a simple linear offset. Currently the > code for this implementation is most duplicated over the architectures, > and the duplicated again in the swiotlb code, and then duplicated again > for special cases like the x86 memory encryption DMA ops. > > This series takes the existing very simple dma-noop dma mapping > implementation, enhances it with all the x86 features and quirks, and > creates a common set of architecture hooks for it and the swiotlb code. > > It then switches a large number of architectures to this generic > direct map implement and the new generic swiotlb dma_map ops. > > Note that for now this only handles architectures that do cache coherent > DMA, but a similar consolidation for non-coherent architectures is in the > work for later merge windows. Is it available in your dma-mapping.git or somewhere else? Cheers Vladimir > > _______________________________________________ > linux-arm-kernel mailing list > linux-arm-kernel at lists.infradead.org > http://lists.infradead.org/mailman/listinfo/linux-arm-kernel >
