Re: [PATCH rdma-next 09/15] vfio/mlx5: Enable relaxed ordering on the live migration data mkey

Jason Gunthorpe <[email protected]>
Newsgroups org.kernel.vger.linux-rdma,org.kernel.vger.kvm,org.kernel.vger.linux-kernel,org.kernel.vger.netdev
Message-ID <178647669515.282103.2847201847360648277.b4-review@b4>
On Sun, 26 Jul 2026 12:29:23 +0300, Michael Gur <[email protected]> wrote:
> As firmware guarantees that all device-issued data writes complete before
> posting of CQE, there is no need for strong ordering of memory accesses
> on the live migration data mkey.
> Enable relaxed ordering on the mkey via the mlx5_core RO setter.
> 
> This allows better performance and supporting vfio live migration on HW
> that restricts memory registration with strict ordering.
> 
> [...]

Reviewed-by: Jason Gunthorpe <[email protected]>

-- 
Jason
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