Re: Backporting skl_update_other_pipe_wm intel drm fixes to the Fedora 4.6 kernel

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----- Original Message -----
> From: "Hans de Goede" <hdegoede@xxxxxxxxxx>
> To: kernel@xxxxxxxxxxxxxxxxxxxxxxx
> Cc: "Lyude" <cpaul@xxxxxxxxxx>, "Rob Clark" <rclark@xxxxxxxxxx>
> Sent: Saturday, 18 June, 2016 1:52:07 AM
> Subject: Backporting skl_update_other_pipe_wm intel drm fixes to the Fedora 4.6 kernel
> 
> Hi Fedora kernel team,
> 
> If you look at:
> 
> https://retrace.fedoraproject.org/faf/problems/
> 
> And look for skl_update_other_pipe_wm there, you will see
> that it is completely dominating the problem report stats
> (listed 4 times on the first page, 5 times on the second).

I talked to #intel-gfx, they said the warn was pretty harmless and we could
also just propose a stable patch to drop that warning.

Though I'm also okay with backporting fixes.

Dave.
> 
> As such I'm thinking about backporting the patches:
> http://www.spinics.net/lists/intel-gfx/msg95595.html
> 
> To the Fedora 4.6 kernel.
> 
> Some of the reported problems are only a WARN_ON triggering,
> but there are also quite a few cases of actually wrong
> watermark settings causing various real problems.
> 
> These patches have been around for a long time, but they missed
> the 4.6 merge window, and then also the 4.7 merge window, they
> are in next now. But IMHO we should grab them now since the
> problems they are causing are too big to wait for 4.8
> hitting Fedora.
> 
> So I would like to backport these to the 4.6 Fedora kernel
> and have this completed before we start pushing 4.6 updated
> to updates-testing. This way we can use the entire Fedora 4.6
> testing phase to also test the backported fixes.
> 
> Before I spend time on this, does this sound like a good
> plan ?  I've already discussed this within the graphics
> team and the consensus there seems to be that this is a good
> idea.
> 
> Regards,
> 
> Hans
> _______________________________________________
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> kernel@xxxxxxxxxxxxxxxxxxxxxxx
> https://lists.fedoraproject.org/admin/lists/kernel@xxxxxxxxxxxxxxxxxxxxxxx
> 
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