P4 to Git Change 1414775 by asalmanp@asalmanp-ocl-stg on 2017/05/26 11:34:07

SWDEV-120065 - [Vega10] Multi 4k60 Hyrid VP9 Chrome Decode Causes System Hang
	- The hang happens because runtime was overwriting an incomplete IB due to incorrect result for OS event wait.
	- To fix this issue force to wait for fences if ibReuse is enabled.

	ReviewBoardURL = http://ocltc.amd.com/reviews/r/12862/

Affected files ...

... //depot/stg/opencl/drivers/opencl/runtime/device/pal/palvirtual.hpp#23 edit

rocclr/runtime/device/pal/palvirtual.hpp

@@ -95,7 +95,7 @@ class VirtualGPU : public device::VirtualDevice {
     bool waifForFence(uint cbId, bool ibReuse = false) const {
       Pal::Result result = Pal::Result::Success;
       uint64_t start = amd::Os::timeNanos();
-      while (Pal::Result::Success != (result = iCmdFences_[cbId]->GetStatus())) {
+      while (ibReuse || (Pal::Result::Success != (result = iCmdFences_[cbId]->GetStatus()))) {
         if (result == Pal::Result::ErrorFenceNeverSubmitted) {
           result = Pal::Result::Success;
           break;