Re: [PATCH 2.6.26-4.14] IB/ipoib: Arm "send_cq" to process completions in due time

[Leon Romanovsky <leon@kernel.org>]

On Tue, Jun 16, 2020 at 09:35:38AM -0700, Gerd Rausch wrote:
> Hi,
>
> On 16/06/2020 05.08, Greg Kroah-Hartman wrote:
> >> I considered backporting commit 8966e28d2e40c ("IB/ipoib: Use NAPI in UD/TX flows")
> >> with all the dependencies it may have a considerably higher risk
> >> than just arming the TX CQ.
> >
> > 90% of the time when we apply a patch that does NOT match the upstream
> > tree, it has a bug in it and needs to have another fix or something
> > else.
> >
> > So please, if at all possible, stick to the upstream tree, so
> > backporting the current patches are the best thing to do.
> >
>
> Jason,
>
> With Mellanox writing and fixing the vast majority of the code found
> in IB/IPoIB, do you or one of your colleagues want to look into this?
>
> It would be considerably less error-prone if the authors of that code
> did that more risky work of backporting.
>
> AFAIK, Mellanox also has the regression tests to ensure that everything
> still works after this re-write as it did before.

Please approach your Mellanox FAE representatives, they will know how to
handle it internally.

Thanks

>
> Thanks,
>
>  Gerd
>