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[142.68.57.212]) by smtp.gmail.com with ESMTPSA id w21sm10075182qth.17.2020.01.15.10.08.48 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Wed, 15 Jan 2020 10:08:48 -0800 (PST) Received: from jgg by mlx.ziepe.ca with local (Exim 4.90_1) (envelope-from ) id 1irn60-0003Wa-4z; Wed, 15 Jan 2020 14:08:48 -0400 Date: Wed, 15 Jan 2020 14:08:48 -0400 From: Jason Gunthorpe To: Yishai Hadas Cc: linux-rdma@vger.kernel.org, dledford@redhat.com, saeedm@mellanox.com, maorg@mellanox.com, michaelgur@mellanox.com, netdev@vger.kernel.org Subject: Re: [PATCH rdma-next 00/10] Relaxed ordering memory regions Message-ID: <20200115180848.GA13397@ziepe.ca> References: <1578506740-22188-1-git-send-email-yishaih@mellanox.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1578506740-22188-1-git-send-email-yishaih@mellanox.com> User-Agent: Mutt/1.9.4 (2018-02-28) Sender: linux-rdma-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org On Wed, Jan 08, 2020 at 08:05:30PM +0200, Yishai Hadas wrote: > This series adds an ioctl command to allocate an async event file followed by a > new ioctl command to get a device context. > > The get device context command enables reading some core generic capabilities > such as supporting an optional MR access flags by IB core and its related > drivers. > > Once the above is enabled, a new optional MR access flag named > IB_UVERBS_ACCESS_RELAXED_ORDERING is added and is used by mlx5 driver. > > This optional flag allows creation of relaxed ordering memory regions. Access > through such MRs can improve performance by allowing the system to reorder > certain accesses. > > As relaxed ordering is an optimization, drivers that do not support it can > simply ignore it. > > Note: This series relies on the 'Refactoring FD usage' series [1] that was sent > to rdma-next. > [1] https://patchwork.kernel.org/project/linux-rdma/list/?series=225541 > > Yishai > > Jason Gunthorpe (3): > RDMA/core: Add UVERBS_METHOD_ASYNC_EVENT_ALLOC > RDMA/core: Remove ucontext_lock from the uverbs_destry_ufile_hw() path > RDMA/uverbs: Add ioctl command to get a device context > > Michael Guralnik (7): > net/mlx5: Expose relaxed ordering bits > RDMA/uverbs: Verify MR access flags > RDMA/core: Add optional access flags range > RDMA/efa: Allow passing of optional access flags for MR registration > RDMA/uverbs: Add new relaxed ordering memory region access flag > RDMA/core: Add the core support field to METHOD_GET_CONTEXT > RDMA/mlx5: Set relaxed ordering when requested This looks OK, can you update the shared branch please Thanks, Jason