[PATCH v5 7/8] drm/i915/gvt: create an idle vGPU

[Tian, Kevin]

> From: Ping Gao
> Sent: Tuesday, March 28, 2017 2:48 PM
> 
> vGPU resource is allocated by scheduler. To account for non-allocated free
> cycles, we create an idle vGPU as the placeholder similar to idle task concept,
> which is useful to handle some corner cases in scheduling policy.
> 
> Signed-off-by: Ping Gao <ping.a.gao at intel.com>

Reviewed-by: Kevin Tian <kevin.tian at intel.com>