P4 to Git Change 1122235 by xcui@merged_opencl_jxcwin on 2015/02/13 17:28:52

EPR #413091 - move commit svm host memory into allocmaptarget and added hostmemref as the backing store  for multiple gpu cases

Affected files ...

... //depot/stg/opencl/drivers/opencl/api/opencl/amdocl/cl_memobj.cpp#73 edit
... //depot/stg/opencl/drivers/opencl/api/opencl/amdocl/cl_svm.cpp#11 edit
... //depot/stg/opencl/drivers/opencl/runtime/device/gpu/gpukernel.cpp#280 edit
... //depot/stg/opencl/drivers/opencl/runtime/device/gpu/gpumemory.cpp#118 edit
... //depot/stg/opencl/drivers/opencl/runtime/platform/memory.cpp#115 edit

opencl/api/opencl/amdocl/cl_memobj.cpp

@@ -3221,11 +3221,6 @@ RUNTIME_ENTRY_RET(void *, clEnqueueMapBuffer, (
         *not_null(errcode_ret) = CL_MEM_OBJECT_ALLOCATION_FAILURE;
         return NULL;
     }
-    // Make sure the svm host memory is commited if the buffer is SVM buffer
-    void* svmPtr = srcBuffer->getSvmPtr();
-    if (NULL != svmPtr) {
-        srcBuffer->commitSvmMemory();
-    }
 
     if (srcBuffer->getMemFlags() & CL_MEM_USE_PERSISTENT_MEM_AMD) {
         // [Windows VidMM restriction]

opencl/api/opencl/amdocl/cl_svm.cpp

@@ -756,7 +756,6 @@ RUNTIME_ENTRY(cl_int, clEnqueueSVMMap, (
             return CL_INVALID_CONTEXT;
         }
 
-        svmMem->commitSvmMemory();
         offset = static_cast<address>(svm_ptr) - static_cast<address>(svmMem->getSvmPtr());
         if (offset < 0 || offset + size > svmMem->getSize()) {
             LogWarning("wrong svm address ");