[PATCH 2/2] drm/i915/gvt: set max priority for gvt context

[Zhang, Xiong Y]

> This is to workaround guest driver hang regression after preemption enable
> that gvt hasn't enabled handling of that for guest workload. So in effect this
> disables preemption for gvt context now.
> 
> Signed-off-by: Zhenyu Wang <zhenyuw at linux.intel.com>
> ---
>  drivers/gpu/drm/i915/gvt/scheduler.c | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/drivers/gpu/drm/i915/gvt/scheduler.c
> b/drivers/gpu/drm/i915/gvt/scheduler.c
> index c98669293e77..e5b48fae1826 100644
> --- a/drivers/gpu/drm/i915/gvt/scheduler.c
> +++ b/drivers/gpu/drm/i915/gvt/scheduler.c
> @@ -1039,6 +1039,9 @@ int intel_vgpu_setup_submission(struct intel_vgpu
> *vgpu)
>  	if (IS_ERR(s->shadow_ctx))
>  		return PTR_ERR(s->shadow_ctx);
> 
> +	if (INTEL_INFO(vgpu->gvt->dev_priv)->has_logical_ring_preemption)
> +		s->shadow_ctx->priority = INT_MAX;
[Zhang, Xiong Y] Better to use i915 macro: 
     If (HAS_LOGICAL_RING_PREEMPTION(engine->i915))
		s->shadow_ctx->priority = I915_PRIORITY_MAX
> +
>  	bitmap_zero(s->shadow_ctx_desc_updated, I915_NUM_ENGINES);
> 
>  	s->workloads = kmem_cache_create("gvt-g_vgpu_workload",
> --
> 2.15.1
> 
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