Re: Patch "drm/nouveau/mmu/nv4a: use nv04 mmu rather than the nv44 one" has been added to the 4.9-stable tree

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On Tue, May 23, 2017 at 5:30 AM, Greg Kroah-Hartman
<gregkh@xxxxxxxxxxxxxxxxxxx> wrote:
> On Mon, May 22, 2017 at 07:49:50PM -0400, Ilia Mirkin wrote:
>> On Mon, May 22, 2017 at 6:57 PM, Ilia Mirkin <imirkin@xxxxxxxxxxxx> wrote:
>> > Hi Greg,
>> >
>> > This patch appears to have misapplied. I'm not sure why cherry-pick
>> > got it wrong, but this is meant to go in the nv4a_chipset definition,
>> > not nv44_chipset.
>> >
>> > This comment also applies to the 4.4 and 4.11 cherry-picks you just did.
>>
>> Aha, I see what happened. f94773b9f5ecd1df7c88c2e921924dd41d2020cc
>> made it into v4.11. However by then it appears to have also made it
>> into drm-next as ac799acaa4d8db4f7dcd968b15c9596c80a4677f and thus the
>> drm merge into v4.12. So now you have two versions of the same commit
>> and are trying to cherry-pick both.
>
> Why in the world would you include the same patch in two different trees
> with two different git ids?  I'm _really_ starting to hate the drm
> trees...

This question may be above my pay-grade (I'm just a lowly occasional
contributor), but I believe the situation is that first the change
goes into drm-next, and then is cherry-picked into drm-fixes. I
haven't checked that this is what happened though. Nor am I
sufficiently plugged into linux kernel development processes to know
what the proper way to handle that situation would be, if any.
Something to address with Ben Skeggs and Dave Airlie, I suppose.

>
>> I'm guessing it's also the reason why your cherrypick of my other
>> commit failed (ad01a91a820cd9f0d880c407bf556b67298dcc93).
>
> That would make sense, but again, why is this happening?
>
>> And I might note that
>> "drm-nouveau-mmu-nv4a-use-nv04-mmu-rather-than-the-nv44-one.patch" was
>> already there before, so didn't make it into your "4.9-stable patches"
>> commit on the stable-queue git tree.
>
> Ok, so what should i do here?  Drop all of the nouveau patches?  Some of
> them?  Which ones were wrong?

Looking at e.g.

https://git.kernel.org/pub/scm/linux/kernel/git/stable/stable-queue.git/tree/queue-4.9

I can say unequivocally that
"drm-nouveau-mmu-nv4a-use-nv04-mmu-rather-than-the-nv44-one.patch" is
wrong in all three of your queues (4.4, 4.9, 4.11). Please drop it.

AFAIK the others should be good, but they're not my patches.

Cheers,

  -ilia



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