On Tue, Jun 19, 2018 at 08:21:06AM -0600, Jason Gunthorpe wrote:

On Tue, Jun 19, 2018 at 08:47:21AM +0300, Leon Romanovsky wrote:

quoted

From: Leon Romanovsky <redacted>

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?

It will be published in the near future.

Thanks

Jason