[Nouveau] 4.9-rc7 nouveau fails on arm64 64k page kernel but works with 4k

[Ben Skeggs]

On 12/07/2016 07:57 PM, Alexandre Courbot wrote:
> On Wed, Dec 7, 2016 at 6:53 PM, Michel Dänzer <michel at daenzer.net> wrote:
>> On 07/12/16 06:39 PM, Alexandre Courbot wrote:
>>> On Fri, Dec 2, 2016 at 12:23 PM, Ilia Mirkin <imirkin at alum.mit.edu> wrote:
>>>> That's right -- nouveau currently requires 4k page sizes to work. This is a
>>>> software limitation, not a hardware one though.
>>>
>>> Looking at the trace I wonder - is the limitation in Nouveau or in TTM?
>>
>> Nouveau. Non-4K page sizes work fine with radeon (and presumably amdgpu).
> 
> Thanks for the precision. I will check if Tegra iGPUs are also
> affected by this - if they are then it gives me a good excuse to take
> care of this bug.
I *should* have this fixed with a large chunk of MMU work I have pending
(I had to drop it temporarily to work on atomic/mst support, but it'll
be picked up, rebased, and finished in the near future).  I haven't
actually tested on 64KiB pages yet, but, I plan to before releasing it.

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