[PATCH] drm/i915/gvt: Refine fence mmio read handler

[Zhenyu Wang]

On 2017.06.15 09:12:22 +0000, Dong, Chuanxiao wrote:
> 
> One question, if the guest is trying to access some fence registers which are beyond the fence resource GVT allocated to VGPU, can we say this is a guest driver issue?
> 

guest driver should get fence number if vGPU is active through
pvinfo, so looks it might be ignoring that in other code path like
reset or upgrade, as we've already set that as 0 in sanitize function
so this is just to return it.

-- 
Open Source Technology Center, Intel ltd.

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