P4 to Git Change 1504202 by gandryey@gera-w8 on 2018/01/16 16:11:56

SWDEV-116219 - Allocating memory on GPU is 2x slower on win10 RS than on win7
	- Fix failures on Win7 32 bit after extending resource cache size. Disable SVM region reservation for 32 bits, since OCL2.0 is disabled for 32bit.

Affected files ...

... //depot/stg/opencl/drivers/opencl/runtime/device/gpu/gpudevice.cpp#581 edit

rocclr/runtime/device/gpu/gpudevice.cpp

@@ -838,9 +838,13 @@ bool Device::create(CALuint ordinal, CALuint numOfDevices) {
     smallMemSystem = true;
   }
 
+  bool noSVM = LP64_SWITCH(true, false) && !GPU_FORCE_OCL20_32BIT;
   // Open GSL device
   if (!open(ordinal, appProfile_.enableHighPerformanceState(),
-            smallMemSystem || appProfile_.reportAsOCL12Device() || (OPENCL_VERSION < 200))) {
+            (smallMemSystem ||
+             appProfile_.reportAsOCL12Device() ||
+             (OPENCL_VERSION < 200) ||
+             noSVM))) {
     return false;
   }