On Thu, Feb 28, 2019 at 01:19:48PM +0100, Stanislaw Gruszka wrote: > Nevermind, the patch is wrong, s->dma_address is initalized in sg_num_pages(). Yes, it is. In sg_num_pages() the offset into the IOMMU mapping is stored in s->dma_address, taking also the segment boundary mask into account. map_sg() later only adds the base-address to that. Regards, Joerg
