[Intel-gfx] [PATCH 1/2] drm/i915/execlists: Notify context-out for lost requests

[Chris Wilson]

When cancelling requests, also send the notification to any listeners
(gvt) that the request is no longer scheduler on hw. They may require to
keep the in/out exactly balanced, and so the reuse after the reset may
confuse the listener.

Fixes: 221ab9719bf3 ("drm/i915/execlists: Unwind incomplete requests on resets")
Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
Cc: "Zhenyu Wang" <zhenyuw at linux.intel.com>
Cc: "Wang, Zhi A" <zhi.a.wang at intel.com>
Cc: Michał Winiarski <michal.winiarski at intel.com>
Cc: Mika Kuoppala <mika.kuoppala at linux.intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin at intel.com>
---
 drivers/gpu/drm/i915/intel_lrc.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/intel_lrc.c b/drivers/gpu/drm/i915/intel_lrc.c
index 2c07f3c08bd3..61cac26a8b05 100644
--- a/drivers/gpu/drm/i915/intel_lrc.c
+++ b/drivers/gpu/drm/i915/intel_lrc.c
@@ -578,7 +578,11 @@ execlist_cancel_port_requests(struct intel_engine_execlists *execlists)
 	unsigned int num_ports = ARRAY_SIZE(execlists->port);
 
 	while (num_ports-- && port_isset(port)) {
-		i915_gem_request_put(port_request(port));
+		struct drm_i915_gem_request *rq = port_request(port);
+
+		execlists_context_status_change(rq, INTEL_CONTEXT_SCHEDULE_OUT);
+		i915_gem_request_put(rq);
+
 		memset(port, 0, sizeof(*port));
 		port++;
 	}
-- 
2.14.1