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drm/i915/gvt: set max priority for gvt context

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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@linux.intel.com>
(cherry picked from commit 1603660b33)
This commit is contained in:
Zhenyu Wang
2017-12-04 10:42:58 +08:00
parent ac7688c039
commit 11474e9091
1 changed files with 3 additions and 0 deletions
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drivers/gpu/drm/i915/gvt/scheduler.c
+3
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@@ -757,6 +757,9 @@ int intel_vgpu_init_gvt_context(struct intel_vgpu *vgpu)
if (IS_ERR(vgpu->shadow_ctx))
return PTR_ERR(vgpu->shadow_ctx);
if (INTEL_INFO(vgpu->gvt->dev_priv)->has_logical_ring_preemption)
vgpu->shadow_ctx->priority = INT_MAX;
vgpu->shadow_ctx->engine[RCS].initialised = true;
bitmap_zero(vgpu->shadow_ctx_desc_updated, I915_NUM_ENGINES);