Index: /trunk/src/VBox/VMM/VMMR0/HMSVMR0.cpp
===================================================================
--- /trunk/src/VBox/VMM/VMMR0/HMSVMR0.cpp	(revision 60731)
+++ /trunk/src/VBox/VMM/VMMR0/HMSVMR0.cpp	(revision 60732)
@@ -2687,4 +2687,5 @@
                  * always via hmR0SvmLoadGuestState() -> hmR0SvmLoadGuestApicState().
                  */
+                STAM_COUNTER_INC(&pVCpu->hm.s.StatSwitchTprMaskedIrq);
             }
             else
Index: /trunk/src/VBox/VMM/VMMR0/HMVMXR0.cpp
===================================================================
--- /trunk/src/VBox/VMM/VMMR0/HMVMXR0.cpp	(revision 60731)
+++ /trunk/src/VBox/VMM/VMMR0/HMVMXR0.cpp	(revision 60732)
@@ -7460,4 +7460,5 @@
                 if (pVCpu->hm.s.vmx.u32ProcCtls & VMX_VMCS_CTRL_PROC_EXEC_USE_TPR_SHADOW)
                     hmR0VmxApicSetTprThreshold(pVCpu, u8Interrupt >> 4);
+                STAM_COUNTER_INC(&pVCpu->hm.s.StatSwitchTprMaskedIrq);
             }
             else
Index: /trunk/src/VBox/VMM/VMMR3/HM.cpp
===================================================================
--- /trunk/src/VBox/VMM/VMMR3/HM.cpp	(revision 60731)
+++ /trunk/src/VBox/VMM/VMMR3/HM.cpp	(revision 60732)
@@ -827,4 +827,5 @@
         HM_REG_COUNTER(&pVCpu->hm.s.StatExitApicAccess,         "/HM/CPU%d/Exit/ApicAccess", "APIC access. Guest attempted to access memory at a physical address on the APIC-access page.");
 
+        HM_REG_COUNTER(&pVCpu->hm.s.StatSwitchTprMaskedIrq,     "/HM/CPU%d/Switch/TprMaskedIrq", "PDMGetInterrupt() signals TPR masks pending Irq.");
         HM_REG_COUNTER(&pVCpu->hm.s.StatSwitchGuestIrq,         "/HM/CPU%d/Switch/IrqPending", "PDMGetInterrupt() cleared behind our back!?!.");
         HM_REG_COUNTER(&pVCpu->hm.s.StatPendingHostIrq,         "/HM/CPU%d/Switch/PendingHostIrq", "Exit to ring-3 due to pending host interrupt before executing guest code.");
Index: /trunk/src/VBox/VMM/include/HMInternal.h
===================================================================
--- /trunk/src/VBox/VMM/include/HMInternal.h	(revision 60731)
+++ /trunk/src/VBox/VMM/include/HMInternal.h	(revision 60732)
@@ -1004,4 +1004,5 @@
     STAMCOUNTER             StatTlbShootdownFlush;
 
+    STAMCOUNTER             StatSwitchTprMaskedIrq;
     STAMCOUNTER             StatSwitchGuestIrq;
     STAMCOUNTER             StatSwitchHmToR3FF;