RDMA/irdma: Ensure iWarp QP queue memory is OS paged aligned

The SQ is shared for between kernel and used by storing the kernel page pointer and passing that to a kmap_atomic(). This then requires that the alignment is PAGE_SIZE aligned. Fix by adding an iWarp specific alignment check. Fixes: e965ef0 ("RDMA/irdma: Split QP handler into irdma_reg_user_mr_type_qp") Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Mike Marciniszyn <[email protected]> Signed-off-by: Shiraz Saleem <[email protected]> Signed-off-by: Jason Gunthorpe <[email protected]>
kvm-riscv · Dec 5, 2023 · 0a5ec36 · 0a5ec36
1 parent 4fbc3a5
commit 0a5ec36
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/drivers/infiniband/hw/irdma/verbs.c b/drivers/infiniband/hw/irdma/verbs.c
@@ -2946,6 +2946,11 @@ static int irdma_reg_user_mr_type_qp(struct irdma_mem_reg_req req,
 	int err;
 	u8 lvl;
 
+	/* iWarp: Catch page not starting on OS page boundary */
+	if (!rdma_protocol_roce(&iwdev->ibdev, 1) &&
+	    ib_umem_offset(iwmr->region))
+		return -EINVAL;
+
 	total = req.sq_pages + req.rq_pages + 1;
 	if (total > iwmr->page_cnt)
 		return -EINVAL;