Hi all, GEM CMA uses dma_alloc_writecombine() when allocating the CMA objects. So IINM the GEM buffers are cache coherent. So is there any reason why DMA_ATTR_SKIP_CPU_SYNC is not passed to dma_map_sg() when GEM CMA prepares the buffer for dma on behalf of the dma-buf user? Is this just an oversight or is there something I have missed? Thanks, Steve _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/dri-devel