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

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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: 221ab9719b ("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>
This commit is contained in:
Chris Wilson 2017-09-26 11:17:19 +01:00
parent 4e9767bc28
commit 7e44fc289d
1 changed files with 5 additions and 1 deletions
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6
drivers/gpu/drm/i915/intel_lrc.c
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@ -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++;
}