On Wed, May 18, 2022 at 05:59:00AM +0000, Ajay Sharma wrote: > Thanks Long. > Hello Jason, > I am the author of the patch. > To your comment below : > " As I've already said, you are supposed to set the value that limits to ib_sge and *NOT* the value that is related to ib_umem_find_best_pgsz. It is usually 2G because the ib_sge's typically work on a 32 bit length." > > The ib_sge is limited by the __sg_alloc_table_from_pages() which > uses ib_dma_max_seg_size() which is what is set by the eth driver > using dma_set_max_seg_size() . Currently our hw does not support > PTEs larger than 2M. *sigh* again it has nothing to do with *PTEs* in the HW. Jason
