P4 to Git Change 1350755 by rili@rili-opencl-pal-stg on 2016/12/07 16:50:28

SWDEV-95925 - OCL on PAL, fixed OCL hanging issue when IOMMUv2 is not supported.
	                         When IOMMUv2 is disabled on CZ, sdma 0 should be used, otherwise, asic will hang

Affected files ...

... //depot/stg/opencl/drivers/opencl/runtime/device/pal/palvirtual.cpp#40 edit

rocclr/runtime/device/pal/palvirtual.cpp

@@ -793,7 +793,8 @@ VirtualGPU::create(bool profiling, uint  deviceQueueSize, uint rtCUs,
         if (dev().numDMAEngines() != 0) {
             uint sdma;
             // If only 1 DMA engine is available then use that one
-            if ((dev().numDMAEngines() < 2) || (idx & 0x1)) {
+            if ((dev().numDMAEngines() < 2) || (idx & 0x1) ||
+                (dev().settings().apuSystem_ && !dev().settings().svmFineGrainSystem_)) {
                 sdma = 0;
             }
             else {