[Intel-gfx] [PATCH] drm/i915/execlists: Detect an out-of-order context switch

[Mika Kuoppala]

Chris Wilson <chris at chris-wilson.co.uk> writes:

> We require that the request is completed before the context is switched
> away.
>
> Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>

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

> ---
>  drivers/gpu/drm/i915/intel_lrc.c | 1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/drivers/gpu/drm/i915/intel_lrc.c b/drivers/gpu/drm/i915/intel_lrc.c
> index 8b64af63f914..a331fd36992f 100644
> --- a/drivers/gpu/drm/i915/intel_lrc.c
> +++ b/drivers/gpu/drm/i915/intel_lrc.c
> @@ -594,6 +594,7 @@ static void intel_lrc_irq_handler(unsigned long data)
>  			GEM_BUG_ON(port[0].count == 0);
>  			if (--port[0].count == 0) {
>  				GEM_BUG_ON(status & GEN8_CTX_STATUS_PREEMPTED);
> +				GEM_BUG_ON(!i915_gem_request_completed(port[0].request));
>  				execlists_context_status_change(port[0].request,
>  								INTEL_CONTEXT_SCHEDULE_OUT);
>  
> -- 
> 2.11.0
>
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