From mboxrd@z Thu Jan 1 00:00:00 1970 From: Christoph Hellwig Subject: Re: Issue with MLX5 IB driver Date: Wed, 31 May 2017 12:44:26 -0700 Message-ID: <20170531194426.GA23120@infradead.org> References: <20170531161819.GK5406@mtr-leonro.local> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <20170531161819.GK5406-U/DQcQFIOTAAJjI8aNfphQ@public.gmane.org> Sender: linux-rdma-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Leon Romanovsky Cc: Joao Pinto , matanb-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org, linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: linux-rdma@vger.kernel.org On Wed, May 31, 2017 at 07:18:19PM +0300, Leon Romanovsky wrote: > I think that you are hitting the side effect of these commits > 7d0cc6edcc70 ("IB/mlx5: Add MR cache for large UMR regions") and > 81713d3788d2 ("IB/mlx5: Add implicit MR support") > > Do you have CONFIG_INFINIBAND_ON_DEMAND_PAGING on? Can you disable it > for the test? Eww. Please make sure mlx5 gracefully handles cases where it can't use crazy amount of memory, including disabling features like the above at runtime when the required resources aren't available. -- 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