1 files changed, 54 insertions, 0 deletions
diff --git a/src/VBox/VMM/tools/VBoxCpuReportMsrSup.cpp b/src/VBox/VMM/tools/VBoxCpuReportMsrSup.cpp
new file mode 100644
index 00000000..4044bbfd
--- /dev/null
+++ b/src/VBox/VMM/tools/VBoxCpuReportMsrSup.cpp
@@ -0,0 +1,54 @@
+/* $Id: VBoxCpuReportMsrSup.cpp $ */
+/** @file
+ * MsrSup - SupDrv-specific MSR access.
+ */
+
+/*
+ * Copyright (C) 2013-2019 Oracle Corporation
+ *
+ * This file is part of VirtualBox Open Source Edition (OSE), as
+ * available from http://www.virtualbox.org. This file is free software;
+ * you can redistribute it and/or modify it under the terms of the GNU
+ * General Public License (GPL) as published by the Free Software
+ * Foundation, in version 2 as it comes in the "COPYING" file of the
+ * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
+ * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
+ */
+
+
+/*********************************************************************************************************************************
+*   Header Files                                                                                                                 *
+*********************************************************************************************************************************/
+#include "VBoxCpuReport.h"
+#include <iprt/errcore.h>
+#include <iprt/x86.h>
+
+
+int VbCpuRepMsrProberInitSupDrv(PVBCPUREPMSRACCESSORS pMsrFunctions)
+{
+    int rc = SUPR3Init(NULL);
+    if (RT_SUCCESS(rc))
+    {
+        /* Test if the MSR prober is available, since the interface is optional. The TSC MSR will exist on any supported CPU. */
+        uint64_t uValue;
+        bool     fGp;
+        rc = SUPR3MsrProberRead(MSR_IA32_TSC, NIL_RTCPUID, &uValue, &fGp);
+        if (   rc != VERR_NOT_IMPLEMENTED
+            && rc != VERR_INVALID_FUNCTION)
+        {
+            pMsrFunctions->fAtomic            = true;
+            pMsrFunctions->pfnMsrProberRead   = SUPR3MsrProberRead;
+            pMsrFunctions->pfnMsrProberWrite  = SUPR3MsrProberWrite;
+            pMsrFunctions->pfnMsrProberModify = SUPR3MsrProberModify;
+
+            pMsrFunctions->pfnTerm            = NULL;
+            return VINF_SUCCESS;
+
+        }
+        vbCpuRepDebug("warning: MSR probing not supported by the support driver (%Rrc).\n", rc);
+    }
+    else
+        vbCpuRepDebug("warning: Unable to initialize the support library (%Rrc).\n", rc);
+    return rc;
+}
+