Commit 0a5ec366 authored by Mike Marciniszyn's avatar Mike Marciniszyn Committed by Jason Gunthorpe
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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: e965ef0e ("RDMA/irdma: Split QP handler into irdma_reg_user_mr_type_qp")
Link: https://lore.kernel.org/r/20231129202143.1434-3-shiraz.saleem@intel.com


Signed-off-by: default avatarMike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: default avatarShiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: default avatarJason Gunthorpe <jgg@nvidia.com>
parent 4fbc3a52

drivers/infiniband/hw/irdma/verbs.c

+5 −0
Original line number Diff line number Diff line
@@ -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;