From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jason Gunthorpe Subject: Re: [PATCH rdma-next 0/3] Dump and fill MKEY Date: Tue, 19 Jun 2018 08:21:06 -0600 Message-ID: <20180619142106.GA27457@mellanox.com> References: <20180619054724.32677-1-leon@kernel.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: Doug Ledford , Leon Romanovsky , RDMA mailing list , Guy Levi , Yishai Hadas , Yonatan Cohen , Saeed Mahameed , linux-netdev To: Leon Romanovsky Return-path: Received: from mail-eopbgr40064.outbound.protection.outlook.com ([40.107.4.64]:63406 "EHLO EUR03-DB5-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S937442AbeFSOVX (ORCPT ); Tue, 19 Jun 2018 10:21:23 -0400 Content-Disposition: inline In-Reply-To: <20180619054724.32677-1-leon@kernel.org> Sender: netdev-owner@vger.kernel.org List-ID: On Tue, Jun 19, 2018 at 08:47:21AM +0300, Leon Romanovsky wrote: > From: Leon Romanovsky > > MLX5 IB HCA offers the memory key, dump_fill_mkey to increase > performance, when used in a send or receive operations. > > It is used to force local HCA operations to skip the PCI bus access, > while keeping track of the processed length in the ibv_sge handling. > > In this three patch series, we expose various bits in our HW > spec file (mlx5_ifc.h), move unneeded for mlx5_core FW command and > export such memory key to user space thought our mlx5-abi header file. Where is the user space for this? Jason