P4 to Git Change 1535454 by todli@todli-win-opencl-kv1 on 2018/04/02 11:12:16

SWDEV-133452 - 1.Add HostMemoryDirectAccess flag to SDI ExternalPhysical memory
	2.Disable host writeBuffer for SDI ExternalPhysical memory
	3.Support marker offset for SDI WriteMarker in Runtime

	http://ocltc.amd.com/reviews/r/14518/

Affected files ...

... //depot/stg/opencl/drivers/opencl/runtime/device/pal/palblit.cpp#19 edit
... //depot/stg/opencl/drivers/opencl/runtime/device/pal/palmemory.cpp#19 edit
... //depot/stg/opencl/drivers/opencl/runtime/device/pal/palvirtual.cpp#81 edit


[ROCm/clr commit: e7fb98dd94]

projects/clr/rocclr/runtime/device/pal/palmemory.cpp

@@ -127,6 +127,7 @@ bool Memory::create(Resource::MemoryType memType, Resource::CreateParams* params
   if (result) {
     switch (memoryType()) {
       case Resource::Pinned:
+      case Resource::ExternalPhysical:
         // Marks memory object for direct GPU access to the host memory
         flags_ |= HostMemoryDirectAccess;
         break;