3.18-rc regression: drm/nouveau: use shared fences for readable objects

[Tobias Klausmann]

On 19.11.2014 09:10, Maarten Lankhorst wrote:
> ...
> On the EDITED patch from fixed-fences-for-bisect, can you do the following:
>
> In nouveau/nv84_fence.c function nv84_fence_context_new, remove
>
> fctx->base.sequence = nv84_fence_read(chan);
>
> and add back
>
> nouveau_bo_wr32(priv->bo, chan->chid * 16/4, 0x00000000);
>
> ...

Added the above on top of your "fixed-fences-for-bisect" branch and 
guessed it would work, but did not :/
Anyway, as this "initializes" the fence to a known state, maybe you 
should consider pushing that.

Going to compile the kernel with trace events (lets see how) ...

Tobias