Re: [PATCH v2 rdma-next] RDMA/mlx5: Enable Relaxed Ordering by default for kernel ULPs

[Christoph Hellwig]

On Wed, Jun 09, 2021 at 02:05:03PM +0300, Leon Romanovsky wrote:
> From: Avihai Horon <avihaih@xxxxxxxxxx>
> 
> Relaxed Ordering is a capability that can only benefit users that support
> it. All kernel ULPs should support Relaxed Ordering, as they are designed
> to read data only after observing the CQE and use the DMA API correctly.
> 
> Hence, implicitly enable Relaxed Ordering by default for kernel ULPs.
> 
> Signed-off-by: Avihai Horon <avihaih@xxxxxxxxxx>
> Signed-off-by: Leon Romanovsky <leonro@xxxxxxxxxx>
> ---
> Changelog:
> v2:
>  * Dropped IB/core patch and set RO implicitly in mlx5 exactly like in
>    eth side of mlx5 driver.

This looks great in terms of code changes.  But can we please also add a
patch to document that PCIe relaxed ordering is fine for kernel ULP usage
somewhere?