[Intel-gfx] Time for execbuf3 ?

[Lionel Landwerlin]

On 21/03/2019 14:15, Chris Wilson wrote:
> Quoting Lionel Landwerlin (2019-03-21 14:08:39)
>> Mostly it's just about having the ability to extend it.
>> I can't really tell you up front what we're going to need until we do :)
> Yup. My takeaway is that the uAPI debugability is something that has
> never been taken seriously (-EINVAL!). And that if we are going to design
> an asynchronous interface with variable command packets, then we need a
> better means for userspace to see which command went wrong and why. For
> that, I think attaching a tracek ringbuf to the interface would be ideal.
>
> Unless I can sell you on a validation layer in userspace :)


On the debugability side, I could be happy with being able to compile 
the submission part of i915 with Eric's new project : 
https://gitlab.freedesktop.org/anholt/drm-shim

Having another repository/codebase just for validation seems like more 
work, easily going out of sync with what's in i915.


>
>> Do you know when that work would start?
> Optimistically, soon.
> -Chris
>
Cool!


-Lionel