Preempt-to-busy uses a GPU semaphore to enforce an idle-barrier across
preemption, but mediated gvt does not fully support semaphores.
Signed-off-by: Chris Wilson <ch...@chris-wilson.co.uk>
---
drivers/gpu/drm/i915/gt/intel_lrc.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/i915/gt/intel_lrc.c
b/drivers/gpu/drm/i915/gt/intel_lrc.c
index b3e0e25c5d80..f8ac9a856bf4 100644
--- a/drivers/gpu/drm/i915/gt/intel_lrc.c
+++ b/drivers/gpu/drm/i915/gt/intel_lrc.c
@@ -2676,10 +2676,11 @@ void intel_execlists_set_default_submission(struct
intel_engine_cs *engine)
engine->unpark = NULL;
engine->flags |= I915_ENGINE_SUPPORTS_STATS;
- if (!intel_vgpu_active(engine->i915))
+ if (!intel_vgpu_active(engine->i915)) {
engine->flags |= I915_ENGINE_HAS_SEMAPHORES;
- if (HAS_LOGICAL_RING_PREEMPTION(engine->i915))
- engine->flags |= I915_ENGINE_HAS_PREEMPTION;
+ if (HAS_LOGICAL_RING_PREEMPTION(engine->i915))
+ engine->flags |= I915_ENGINE_HAS_PREEMPTION;
+ }
}
static void execlists_destroy(struct intel_engine_cs *engine)
--
2.20.1
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