Re: [PATCH mlx5-next 1/4] RDMA/mlx5: Remove pcie_relaxed_ordering_enabled() check for RO write

[Jacob Keller <jacob.e.keller@intel.com>]

On 4/10/2023 6:07 AM, Leon Romanovsky wrote:
> From: Avihai Horon <avihaih@nvidia.com>
> 
> pcie_relaxed_ordering_enabled() check was added to avoid a syndrome when
> creating a MKey with relaxed ordering (RO) enabled when the driver's
> relaxed_ordering_{read,write} HCA capabilities are out of sync with FW.
> 
> While this can happen with relaxed_ordering_read, it can't happen with
> relaxed_ordering_write as it's set if the device supports RO write,
> regardless of RO in PCI config space, and thus can't change during
> runtime.
> 
> Therefore, drop the pcie_relaxed_ordering_enabled() check for
> relaxed_ordering_write while keeping it for relaxed_ordering_read.
> Doing so will also allow the usage of RO write in VFs and VMs (where RO
> in PCI config space is not reported/emulated properly).
> 
> Signed-off-by: Avihai Horon <avihaih@nvidia.com>
> Reviewed-by: Shay Drory <shayd@nvidia.com>
> Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
> ---

Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>