2 commits

Author	SHA1	Message	Date
Jason Gunthorpe	15fe76e236	RDMA/umem: Fix truncation for block sizes >= 4G ... When the iommu is used the linearization of the mapping can give a single block that is very large split across multiple SG entries. When __rdma_block_iter_next() reassembles the split SG entries it is overflowing the 32 bit stack values and computed the wrong DMA addresses for blocks after the truncation. Use the right types to hold DMA addresses. Link: https://patch.msgid.link/r/1-v1-88303e9e509f+f7-ib_umem_types_jgg@nvidia.com Cc: stable@vger.kernel.org Fixes: a808273a49 ("RDMA/verbs: Add a DMA iterator to return aligned contiguous memory blocks") Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>	2026-06-03 09:37:34 -03:00
Leon Romanovsky	6094ea64c6	RDMA: Move DMA block iterator logic into dedicated files ... The DMA iterator logic was mixed into verbs and umem-specific code, forcing all users to include rdma/ib_umem.h. Move the block iterator logic into iter.c and rdma/iter.h so that rdma/ib_umem.h and rdma/ib_verbs.h can be separated in a follow-up patch. Link: https://patch.msgid.link/20260213-refactor-umem-v1-1-f3be85847922@nvidia.com Signed-off-by: Leon Romanovsky <leonro@nvidia.com>	2026-02-25 08:15:30 -05:00