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drm/i915/execlists: Detect an out-of-order context switch
We require that the request is completed before the context is switched away. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Link: http://patchwork.freedesktop.org/patch/msgid/20170223145031.26210-1-chris@chris-wilson.co.uk Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com>
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@ -591,6 +591,7 @@ static void intel_lrc_irq_handler(unsigned long data)
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GEM_BUG_ON(port[0].count == 0);
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if (--port[0].count == 0) {
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GEM_BUG_ON(status & GEN8_CTX_STATUS_PREEMPTED);
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GEM_BUG_ON(!i915_gem_request_completed(port[0].request));
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execlists_context_status_change(port[0].request,
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INTEL_CONTEXT_SCHEDULE_OUT);
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