From 1603660b3342269c95fcafee1945790342a8c28e Mon Sep 17 00:00:00 2001
From: Zhenyu Wang <zhenyuw@linux.intel.com>
Date: Mon, 4 Dec 2017 10:42:58 +0800
Subject: [PATCH] drm/i915/gvt: set max priority for gvt context
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>
---
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 9100aebcb105b..ab9a500ba3e90 100644
--- a/drivers/gpu/drm/i915/gvt/scheduler.c
+++ b/drivers/gpu/drm/i915/gvt/scheduler.c
@@ -1038,6 +1038,9 @@ int intel_vgpu_setup_submission(struct intel_vgpu *vgpu)
if (IS_ERR(s->shadow_ctx))
return PTR_ERR(s->shadow_ctx);
+ if (HAS_LOGICAL_RING_PREEMPTION(vgpu->gvt->dev_priv))
+ s->shadow_ctx->priority = INT_MAX;
+
bitmap_zero(s->shadow_ctx_desc_updated, I915_NUM_ENGINES);
s->workloads = kmem_cache_create("gvt-g_vgpu_workload",
--
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