[RFC PATCH 0/3] nvme sq associations

Nikitin, Andrey nikitina at amazon.com
Tue Sep 28 17:48:49 PDT 2021


On 9/25/21, 01:38, "Christoph Hellwig" <hch at infradead.org> wrote:
>
> Honestly I'd rather not merge this whole patchset at all.  It is a
> completly frinde feature for a totally misdesigned part of the NVMe
> spec.  Until actual controller in the hands of prosumers support
> anything like that I'm very reluctant to bloat the driver fast path for
> it.

Thank you for the feedback.
While I agree with your remarks regarding feature design in NVMe spec
the minimal implementation proposed in this patchset would help resolving
the problems outlined int the original post (undesired queue sharing and
noisy neighbor).
For controllers that do not support NVM sets and SQ associations the
configuration would stay the same as it used to be. So I would be
interested to know more about what brings your concerns for the driver
fast path.

Best regards,
Andrey




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