[Intel-gfx] Add warning for nesting dma_fence containers

[Christian König]

Am 04.02.22 um 11:40 schrieb Thomas Hellström:
> On Fri, 2022-02-04 at 11:04 +0100, Christian König wrote:
>> Hi everyone,
>>
>> Since some operations can then lead to recursive handling nesting
>> dma_fence containers into each other is only allowed under some
>> restrictions.
>>
>> dma_fence_array containers can be attached to dma_fence_chain
>> containers and dma_fence_chain containers by chaining them together.
>>
>> In all other cases the individual fences should be extracted with
>> the appropriate iterators and added to the new containers
>> individually.
>>
>> I've separated the i915 cleanup from this change since it is
>> generally a different functionality and the build bots complained
>> about some issues with those patches.
>>
>> Most patches are already reviewd, but especially the first one still
>> needs an rb tag.
>>
>> Please review and comment,
> I see you dropped the i915 patch (probably due to lack of reviews?),
> Got distracted with other things, but I'll see if I can resurrect that
> and get it reviewed and merged.

I was about to send out the i915 patch when that one here is merged.

The CI systems yielded some strange error with that one and I wanted to 
double check what's that all about.

Regards,
Christian.

>
> Thanks,
> Thomas
>
>
>> Christian.
>>
>>
>