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drm/i915/execlists: Detect an out-of-order context switch
author
Chris Wilson
<chris@chris-wilson.co.uk>
Thu, 23 Feb 2017 14:50:31 +0000
(14:50 +0000)
committer
Chris Wilson
<chris@chris-wilson.co.uk>
Fri, 24 Feb 2017 12:57:32 +0000
(12:57 +0000)
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>
drivers/gpu/drm/i915/intel_lrc.c
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diff --git
a/drivers/gpu/drm/i915/intel_lrc.c
b/drivers/gpu/drm/i915/intel_lrc.c
index
39329d4
..
1c6c716
100644
(file)
--- a/
drivers/gpu/drm/i915/intel_lrc.c
+++ b/
drivers/gpu/drm/i915/intel_lrc.c
@@
-591,6
+591,7
@@
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);