When execlists signals the context completion, it also provides the
context id for the status event. Assert that id matches the one we expect.
Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/intel_lrc.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/gpu/drm/i915/intel_lrc.c b/drivers/gpu/drm/i915/intel_lrc.c
index 432ee495dec2..6aa8761c333a 100644
--- a/drivers/gpu/drm/i915/intel_lrc.c
+++ b/drivers/gpu/drm/i915/intel_lrc.c
@@ -595,6 +595,10 @@ static void intel_lrc_irq_handler(unsigned long data)
if (!(status & GEN8_CTX_STATUS_COMPLETED_MASK))
continue;
+ /* Check the context id for this event matches */
+ GEM_BUG_ON(readl(buf + 2 * idx + 1) !=
+ port[0].request->ctx->hw_id);
+
GEM_BUG_ON(port[0].count == 0);
if (--port[0].count == 0) {
GEM_BUG_ON(status & GEN8_CTX_STATUS_PREEMPTED);
--
2.11.0
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