On Mon, Nov 07, 2022 at 10:54:36AM +0000, Catalin Marinas wrote: > An idea: we could add another member to struct scatterlist to track the > bounced address. We can then do the bouncing in a similar way to > iommu_dma_map_sg_swiotlb() but without the iova allocation. The latter > would be a common path for both the bounced and non-bounced cases. That would be a pretty massive memory overhead for an unusual case, so I'd rather avoid it. In addition to the long term plan of doing DMA mappings without a scatterlist..
