netdev - Re: [PATCH rdma-next 0/3] Dump and fill MKEY

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Message-ID: <20180619142106.GA27457@mellanox.com>
Date:   Tue, 19 Jun 2018 08:21:06 -0600
From:   Jason Gunthorpe <jgg@...lanox.com>
To:     Leon Romanovsky <leon@...nel.org>
Cc:     Doug Ledford <dledford@...hat.com>,
        Leon Romanovsky <leonro@...lanox.com>,
        RDMA mailing list <linux-rdma@...r.kernel.org>,
        Guy Levi <guyle@...lanox.com>,
        Yishai Hadas <yishaih@...lanox.com>,
        Yonatan Cohen <yonatanc@...lanox.com>,
        Saeed Mahameed <saeedm@...lanox.com>,
        linux-netdev <netdev@...r.kernel.org>
Subject: Re: [PATCH rdma-next 0/3] Dump and fill MKEY

On Tue, Jun 19, 2018 at 08:47:21AM +0300, Leon Romanovsky wrote:
> From: Leon Romanovsky <leonro@...lanox.com>
> 
> 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