Index: /trunk/include/VBox/vmm/iem.h
===================================================================
--- /trunk/include/VBox/vmm/iem.h	(revision 75200)
+++ /trunk/include/VBox/vmm/iem.h	(revision 75201)
@@ -328,4 +328,5 @@
 
 #ifdef VBOX_WITH_NESTED_HWVIRT_VMX
+VMM_INT_DECL(VBOXSTRICTRC)  IEMExecVmxVmexitPreemptTimer(PVMCPU pVCpu);
 VMM_INT_DECL(VBOXSTRICTRC)  IEMExecVmxVmexitExtInt(PVMCPU pVCpu, uint8_t uVector, bool fIntPending);
 VMM_INT_DECL(VBOXSTRICTRC)  IEMExecVmxVmexitStartupIpi(PVMCPU pVCpu, uint8_t uVector);
Index: /trunk/src/VBox/VMM/VMMAll/IEMAll.cpp
===================================================================
--- /trunk/src/VBox/VMM/VMMAll/IEMAll.cpp	(revision 75200)
+++ /trunk/src/VBox/VMM/VMMAll/IEMAll.cpp	(revision 75201)
@@ -979,4 +979,5 @@
                                               uint8_t cbInstr);
 IEM_STATIC VBOXSTRICTRC     iemVmxVmexitTripleFault(PVMCPU pVCpu);
+IEM_STATIC VBOXSTRICTRC     iemVmxVmexitPreemptTimer(PVMCPU pVCpu);
 IEM_STATIC VBOXSTRICTRC     iemVmxVmexitExtInt(PVMCPU pVCpu, uint8_t uVector, bool fIntPending);
 IEM_STATIC VBOXSTRICTRC     iemVmxVmexitStartupIpi(PVMCPU pVCpu, uint8_t uVector);
@@ -15644,4 +15645,21 @@
 
 /**
+ * Interface for HM and EM to emulate VM-exit due to expiry of the preemption timer.
+ *
+ * @returns Strict VBox status code.
+ * @param   pVCpu           The cross context virtual CPU structure of the calling EMT.
+ * @thread  EMT(pVCpu)
+ */
+VMM_INT_DECL(VBOXSTRICTRC) IEMExecVmxVmexitPreemptTimer(PVMCPU pVCpu)
+{
+    IEM_CTX_ASSERT(pVCpu, IEM_CPUMCTX_EXTRN_VMX_VMEXIT_MASK);
+    VBOXSTRICTRC rcStrict = iemVmxVmexitPreemptTimer(pVCpu);
+    if (pVCpu->iem.s.cActiveMappings)
+        iemMemRollback(pVCpu);
+    return iemExecStatusCodeFiddling(pVCpu, rcStrict);
+}
+
+
+/**
  * Interface for HM and EM to emulate VM-exit due to external interrupts.
  *
Index: /trunk/src/VBox/VMM/VMMAll/IEMAllCImplVmxInstr.cpp.h
===================================================================
--- /trunk/src/VBox/VMM/VMMAll/IEMAllCImplVmxInstr.cpp.h	(revision 75200)
+++ /trunk/src/VBox/VMM/VMMAll/IEMAllCImplVmxInstr.cpp.h	(revision 75201)
@@ -3712,4 +3712,22 @@
 
 /**
+ * VMX VM-exit handler for VM-exits due to expiry of the preemption timer.
+ *
+ * @returns VBox strict status code.
+ * @param   pVCpu           The cross context virtual CPU structure.
+ */
+IEM_STATIC VBOXSTRICTRC iemVmxVmexitPreemptTimer(PVMCPU pVCpu)
+{
+    PCVMXVVMCS pVmcs = pVCpu->cpum.GstCtx.hwvirt.vmx.CTX_SUFF(pVmcs);
+    Assert(pVmcs);
+    Assert(pVmcs->u32PinCtls & VMX_PIN_CTLS_PREEMPT_TIMER);
+    NOREF(pVmcs);
+
+    iemVmxVmcsSetExitQual(pVCpu, 0);
+    return iemVmxVmexit(pVCpu, VMX_EXIT_PREEMPT_TIMER);
+}
+
+
+/**
  * VMX VM-exit handler for VM-exits due to external interrupts.
  *