From mboxrd@z Thu Jan 1 00:00:00 1970 From: Leon Romanovsky Subject: [PATCH rdma-next V1 03/10] IB/mlx5: Fix UMR size calculation Date: Wed, 5 Apr 2017 09:23:52 +0300 Message-ID: <20170405062359.26623-4-leon@kernel.org> References: <20170405062359.26623-1-leon@kernel.org> Return-path: In-Reply-To: <20170405062359.26623-1-leon-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org> Sender: linux-rdma-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Doug Ledford Cc: linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Artemy Kovalyov List-Id: linux-rdma@vger.kernel.org From: Artemy Kovalyov Translation table updates of large UMR may require multiple post send operations. The last operations can be in various lengths, but current code set them to be the same length. Fixes: 7d0cc6edcc70 ('IB/mlx5: Add MR cache for large UMR regions') Signed-off-by: Artemy Kovalyov Signed-off-by: Leon Romanovsky --- drivers/infiniband/hw/mlx5/mr.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/infiniband/hw/mlx5/mr.c b/drivers/infiniband/hw/mlx5/mr.c index 1f09e11fa694..9a74260e9899 100644 --- a/drivers/infiniband/hw/mlx5/mr.c +++ b/drivers/infiniband/hw/mlx5/mr.c @@ -1045,8 +1045,9 @@ int mlx5_ib_update_xlt(struct mlx5_ib_mr *mr, u64 idx, int npages, for (pages_mapped = 0; pages_mapped < pages_to_map && !err; pages_mapped += pages_iter, idx += pages_iter) { + npages = min_t(int, pages_iter, pages_to_map - pages_mapped); dma_sync_single_for_cpu(ddev, dma, size, DMA_TO_DEVICE); - npages = populate_xlt(mr, idx, pages_iter, xlt, + npages = populate_xlt(mr, idx, npages, xlt, page_shift, size, flags); dma_sync_single_for_device(ddev, dma, size, DMA_TO_DEVICE); -- 2.12.0 -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html