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diff --git a/src/VBox/VMM/VMMR0/GVMMR0Internal.h b/src/VBox/VMM/VMMR0/GVMMR0Internal.h
new file mode 100644
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+++ b/src/VBox/VMM/VMMR0/GVMMR0Internal.h
@@ -0,0 +1,73 @@
+/* $Id: GVMMR0Internal.h $ */
+/** @file
+ * GVMM - The Global VM Manager, Internal header.
+ */
+
+/*
+ * Copyright (C) 2007-2020 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.
+ */
+
+#ifndef VMM_INCLUDED_SRC_VMMR0_GVMMR0Internal_h
+#define VMM_INCLUDED_SRC_VMMR0_GVMMR0Internal_h
+#ifndef RT_WITHOUT_PRAGMA_ONCE
+# pragma once
+#endif
+
+#include <iprt/mem.h>
+
+/**
+ * The GVMM per VM data.
+ */
+typedef struct GVMMPERVCPU
+{
+    /** The time the halted EMT thread expires.
+     * 0 if the EMT thread is blocked here. */
+    uint64_t volatile   u64HaltExpire;
+    /** The event semaphore the EMT thread is blocking on. */
+    RTSEMEVENTMULTI     HaltEventMulti;
+    /** The ring-3 mapping of the VMCPU structure. */
+    RTR0MEMOBJ          VMCpuMapObj;
+    /** The APIC ID of the CPU that EMT was scheduled on the last time we checked.
+     * @todo Extend to 32-bit and use most suitable APIC ID function when we
+     *       start using this for something sensible... */
+    uint8_t             iCpuEmt;
+} GVMMPERVCPU;
+/** Pointer to the GVMM per VCPU data. */
+typedef GVMMPERVCPU *PGVMMPERVCPU;
+
+/**
+ * The GVMM per VM data.
+ */
+typedef struct GVMMPERVM
+{
+    /** The shared VM data structure allocation object (PVMR0). */
+    RTR0MEMOBJ          VMMemObj;
+    /** The Ring-3 mapping of the shared VM data structure (PVMR3). */
+    RTR0MEMOBJ          VMMapObj;
+    /** The allocation object for the VM pages. */
+    RTR0MEMOBJ          VMPagesMemObj;
+    /** The ring-3 mapping of the VM pages. */
+    RTR0MEMOBJ          VMPagesMapObj;
+
+    /** The scheduler statistics. */
+    GVMMSTATSSCHED      StatsSched;
+
+    /** Whether the per-VM ring-0 initialization has been performed. */
+    bool                fDoneVMMR0Init;
+    /** Whether the per-VM ring-0 termination is being or has been performed. */
+    bool                fDoneVMMR0Term;
+} GVMMPERVM;
+/** Pointer to the GVMM per VM data. */
+typedef GVMMPERVM *PGVMMPERVM;
+
+
+#endif /* !VMM_INCLUDED_SRC_VMMR0_GVMMR0Internal_h */
+