[PATCH] crash-me-again

[Chris Wilson]

---
 drivers/gpu/drm/i915/intel_lrc.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/gpu/drm/i915/intel_lrc.c b/drivers/gpu/drm/i915/intel_lrc.c
index ab89dabc2965..04670a64766c 100644
--- a/drivers/gpu/drm/i915/intel_lrc.c
+++ b/drivers/gpu/drm/i915/intel_lrc.c
@@ -1451,6 +1451,7 @@ execlists_context_pin(struct intel_engine_cs *engine,
 
 static int execlists_request_alloc(struct i915_request *request)
 {
+	u32 *cs;
 	int ret;
 
 	GEM_BUG_ON(!request->hw_context->pin_count);
@@ -1465,6 +1466,13 @@ static int execlists_request_alloc(struct i915_request *request)
 	if (ret)
 		return ret;
 
+	cs = intel_ring_begin(request, 4);
+	*cs++ = MI_BATCH_BUFFER_START_GEN8;
+	*cs++ = i915_ggtt_offset(request->ring->vma);
+	*cs++ = 0;
+	*cs++ = 0;
+	intel_ring_advance(request, cs);
+
 	/* Note that after this point, we have committed to using
 	 * this request as it is being used to both track the
 	 * state of engine initialisation and liveness of the
-- 
2.18.0