Report HMM driver support status.

Implements HSA_AMD_SYSTEM_INFO_SVM_SUPPORTED.

Change-Id: If5182edcc1fa067fa514aa2c1bd326c4c42d1b64


[ROCm/ROCR-Runtime commit: ee8b1b64ad]

projects/rocr-runtime/runtime/hsa-runtime/core/runtime/amd_topology.cpp

@@ -143,7 +143,7 @@ GpuAgent* DiscoverGpu(HSAuint32 node_id, HsaNodeProperties& node_prop, bool xnac
       if (gpu->isa()->GetProcessorName() == "gfx908") {
         node_prop.Capability.ui32.SRAM_EDCSupport = 1;
         delete gpu;
-        gpu = new GpuAgent(node_id, node_prop);
+        gpu = new GpuAgent(node_id, node_prop, xnack_mode);
       }
     }
   } catch (const hsa_exception& e) {

projects/rocr-runtime/runtime/hsa-runtime/core/runtime/runtime.cpp

@@ -645,8 +645,12 @@ hsa_status_t Runtime::GetSystemInfo(hsa_system_info_t attribute, void* value) {
       break;
     }
     case HSA_AMD_SYSTEM_INFO_SVM_SUPPORTED: {
-      // todo: Get HMM kernel support info.
-      *(bool*)value = true;
+      bool ret = true;
+      for (auto agent : gpu_agents_) {
+        AMD::GpuAgent* gpu = (AMD::GpuAgent*)agent;
+        ret &= (gpu->properties().Capability.ui32.SVMAPISupported == 1);
+      }
+      *(bool*)value = ret;
       break;
     }
     case HSA_AMD_SYSTEM_INFO_SVM_ACCESSIBLE_BY_DEFAULT: {