[Bug 97872] GPU hang with libva (gstreamer)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=97872

--- Comment #20 from haihao <haihao.xiang at intel.com> ---

> Yes, that is the whole point of the patch submitted to the i915, but it is
> still a hack.  I’m well aware of how this works.  And that means every time
> we use a new codec that is not balanced between the VDBoxen we add the hack
> flag.  Again, we need to do better.
> 

The batchbuffer for a new codec (MPEG2/JPEG/VC1/AVC/VP8) is still balanced
between all VCS/VDBOX rings. The flag in the following function call is only
available to the current batch buffer. 

intel_batchbuffer_start_atomic_bcs_override(batch, 0x1000, BSD_RING0);

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