Re: [Intel-gfx] [PATCH 5/6] drm/i915: Wrap engine->schedule in RCU locks for set-wedge protection

Chris Wilson writes: > Similar to the staging around handling of engine->submit_request, we > need to stop adding to the execlists->queue prior to calling > engine->cancel_requests. cancel_requests will move requests from the > queue onto the timeline, so if we add a

[Intel-gfx] [PATCH 5/6] drm/i915: Wrap engine->schedule in RCU locks for set-wedge protection

Similar to the staging around handling of engine->submit_request, we need to stop adding to the execlists->queue prior to calling engine->cancel_requests. cancel_requests will move requests from the queue onto the timeline, so if we add a request onto the queue after that point, it will be lost.