Re: v4.11 mlx5 regression

[Laurence Oberman <loberman-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>]

----- Original Message -----
> From: "Bart Van Assche" <Bart.VanAssche-XdAiOPVOjttBDgjK7y7TUQ@public.gmane.org>
> To: parav-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org
> Cc: linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, dledford-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org
> Sent: Tuesday, February 28, 2017 3:00:44 PM
> Subject: Re: v4.11 mlx5 regression
> 
> On Tue, 2017-02-28 at 19:53 +0000, Parav Pandit wrote:
> > I am using Linux-block tree testing on x86_64.
> > git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.git
> > 
> > Commit ac1820fb286b552b6885d40ab34f1e59b815f1f1 introduced dma_ops related
> > change that you made.
> > With this change I am hitting below error in mlx5_ib driver.
> > "DMAR: Allocating domain for mlx5_0 failed"
> > 
> > I revert back to commit edccb59429657b09806146339e2b27594c1d1da0.
> > With revert I do not hit the error.
> > 
> > I do not have cycles to debug/fix this currently. Do you think this might
> > be related to your change?
> 
> Hello Parav,
> 
> Since I do not have access to an mlx5 setup I hope that you realize that
> without a bisect your report is useless to me.
> 
> Bart.--
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Hello Parav,

I had tested all of Barts recent commits with mlx5.
Read/write direct/buffered small and large I/O.
They all passed for me.

If you give me a little more detail on your test I will see what I find in my test bed here.

Regards
Laurence
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