Commit 7e44fc28 authored Sep 26, 2017 by Chris Wilson

drm/i915/execlists: Notify context-out for lost requests



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

Fixes: 221ab971 ("drm/i915/execlists: Unwind incomplete requests on resets")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: "Zhenyu Wang" <zhenyuw@linux.intel.com>
Cc: "Wang, Zhi A" <zhi.a.wang@intel.com>
Cc: Michał Winiarski <michal.winiarski@intel.com>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20170926101720.9479-1-chris@chris-wilson.co.uk


Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>

parent 4e9767bc

drivers/gpu/drm/i915/intel_lrc.c

+5 −1

Original line number	Original line	Diff line number	Diff line
	@@ -578,7 +578,11 @@ execlist_cancel_port_requests(struct intel_engine_execlists *execlists)
	unsigned int num_ports = ARRAY_SIZE(execlists->port);		unsigned int num_ports = ARRAY_SIZE(execlists->port);

	while (num_ports-- && port_isset(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));		memset(port, 0, sizeof(*port));
	port++;		port++;
	}		}