From 75b7b86bdb0df37e08e44b6c1f99010967f81944 Mon Sep 17 00:00:00 2001 From: Artemy Kovalyov Date: Sun, 25 Nov 2018 20:34:26 +0200 Subject: IB/mlx5: Fix page fault handling for MW Memory windows are implemented with an indirect MKey, when a page fault event comes for a MW Mkey we need to find the MR at the end of the list of the indirect MKeys by iterating on all items from the first to the last. The offset calculated during this process has to be zeroed after the first iteration or the next iteration will start from a wrong address, resulting incorrect ODP faulting behavior. Fixes: db570d7deafb ("IB/mlx5: Add ODP support to MW") Signed-off-by: Artemy Kovalyov Signed-off-by: Moni Shoua Signed-off-by: Leon Romanovsky Signed-off-by: Jason Gunthorpe --- drivers/infiniband/hw/mlx5/odp.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/infiniband') diff --git a/drivers/infiniband/hw/mlx5/odp.c b/drivers/infiniband/hw/mlx5/odp.c index 2a0743808bd8..b711a0f3aa35 100644 --- a/drivers/infiniband/hw/mlx5/odp.c +++ b/drivers/infiniband/hw/mlx5/odp.c @@ -743,6 +743,7 @@ next_mr: head = frame; bcnt -= frame->bcnt; + offset = 0; } break; -- cgit v1.2.3