[Intel-gfx] Add warning for nesting dma_fence containers

Christian König ckoenig.leichtzumerken at gmail.com
Fri Feb 4 13:20:06 UTC 2022

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.


> Thanks,
> Thomas
>> Christian.

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