SWDEV-353281 - VM support in mempool for graphs

The change enables VM support in graphs on Windows. That allows
to avoid caching of all allocations at the cost of map/unmap
overhead during memory create/destroy.

Change-Id: I792be00fba099e5e5d3cd44a963e1dfd6976a86d

hipamd/src/hip_device.cpp

@@ -53,10 +53,12 @@ bool Device::Create() {
     return false;
   }
 
-  uint64_t max_size = std::numeric_limits<uint64_t>::max();
-  // Use maximum value to hold memory, because current implementation doesn't support VM
-  // Note: the call for the threshold is always successful
-  auto error = graph_mem_pool_->SetAttribute(hipMemPoolAttrReleaseThreshold, &max_size);
+  if (!HIP_MEM_POOL_USE_VM) {
+    uint64_t max_size = std::numeric_limits<uint64_t>::max();
+    // Use maximum value to hold memory, because current implementation doesn't support VM
+    // Note: the call for the threshold is always successful
+    auto error = graph_mem_pool_->SetAttribute(hipMemPoolAttrReleaseThreshold, &max_size);
+  }
 
   // Current is default pool after device creation
   current_mem_pool_ = default_mem_pool_;