Index: /trunk/include/VBox/vmm/vm.h
===================================================================
--- /trunk/include/VBox/vmm/vm.h	(revision 37583)
+++ /trunk/include/VBox/vmm/vm.h	(revision 37584)
@@ -415,5 +415,5 @@
 #define VM_FF_HWACCM_TO_R3_MASK                 (VM_FF_TM_VIRTUAL_SYNC | VM_FF_PGM_NEED_HANDY_PAGES | VM_FF_PGM_NO_MEMORY | VM_FF_PDM_QUEUES | VM_FF_EMT_RENDEZVOUS)
 /** VMCPU Flags that cause the HWACCM loops to go back to ring-3. */
-#define VMCPU_FF_HWACCM_TO_R3_MASK              (VMCPU_FF_TO_R3 | VMCPU_FF_TIMER)
+#define VMCPU_FF_HWACCM_TO_R3_MASK              (VMCPU_FF_TO_R3 | VMCPU_FF_TIMER | VMCPU_FF_PDM_CRITSECT)
 
 /** All the forced VM flags. */
Index: /trunk/src/VBox/VMM/VMMR0/VMMR0.cpp
===================================================================
--- /trunk/src/VBox/VMM/VMMR0/VMMR0.cpp	(revision 37583)
+++ /trunk/src/VBox/VMM/VMMR0/VMMR0.cpp	(revision 37584)
@@ -483,24 +483,17 @@
             if (VM_FF_ISPENDING(pVM, VM_FF_TM_VIRTUAL_SYNC))
                 STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetToR3TMVirt);
-            else
-            if (VM_FF_ISPENDING(pVM, VM_FF_PGM_NEED_HANDY_PAGES))
+            else if (VM_FF_ISPENDING(pVM, VM_FF_PGM_NEED_HANDY_PAGES))
                 STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetToR3HandyPages);
-            else
-            if (VM_FF_ISPENDING(pVM, VM_FF_PDM_QUEUES))
+            else if (VM_FF_ISPENDING(pVM, VM_FF_PDM_QUEUES))
                 STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetToR3PDMQueues);
-            else
-            if (VM_FF_ISPENDING(pVM, VM_FF_EMT_RENDEZVOUS))
+            else if (VM_FF_ISPENDING(pVM, VM_FF_EMT_RENDEZVOUS))
                 STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetToR3Rendezvous);
-            else
-            if (VM_FF_ISPENDING(pVM, VM_FF_PDM_DMA))
+            else if (VM_FF_ISPENDING(pVM, VM_FF_PDM_DMA))
                 STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetToR3DMA);
-            else
-            if (VMCPU_FF_ISPENDING(pVCpu, VMCPU_FF_TIMER))
+            else if (VMCPU_FF_ISPENDING(pVCpu, VMCPU_FF_TIMER))
                 STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetToR3Timer);
-            else
-            if (VMCPU_FF_ISPENDING(pVCpu, VMCPU_FF_PDM_CRITSECT))
+            else if (VMCPU_FF_ISPENDING(pVCpu, VMCPU_FF_PDM_CRITSECT))
                 STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetToR3CritSect);
-            else
-            if (VMCPU_FF_ISPENDING(pVCpu, VMCPU_FF_TO_R3))
+            else if (VMCPU_FF_ISPENDING(pVCpu, VMCPU_FF_TO_R3))
                 STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetToR3);
             else
Index: /trunk/src/VBox/VMM/VMMRC/TRPMRCHandlers.cpp
===================================================================
--- /trunk/src/VBox/VMM/VMMRC/TRPMRCHandlers.cpp	(revision 37583)
+++ /trunk/src/VBox/VMM/VMMRC/TRPMRCHandlers.cpp	(revision 37584)
@@ -187,5 +187,7 @@
     if (    rc == VINF_SUCCESS
         &&  (   VM_FF_ISPENDING(pVM, VM_FF_TM_VIRTUAL_SYNC | VM_FF_REQUEST | VM_FF_PGM_NO_MEMORY | VM_FF_PDM_DMA)
-             || VMCPU_FF_ISPENDING(pVCpu, VMCPU_FF_TIMER | VMCPU_FF_TO_R3 | VMCPU_FF_INTERRUPT_APIC | VMCPU_FF_INTERRUPT_PIC | VMCPU_FF_REQUEST | VMCPU_FF_PGM_SYNC_CR3 | VMCPU_FF_PGM_SYNC_CR3_NON_GLOBAL)
+             || VMCPU_FF_ISPENDING(pVCpu, VMCPU_FF_TIMER | VMCPU_FF_TO_R3 | VMCPU_FF_INTERRUPT_APIC | VMCPU_FF_INTERRUPT_PIC
+                                          | VMCPU_FF_REQUEST | VMCPU_FF_PGM_SYNC_CR3 | VMCPU_FF_PGM_SYNC_CR3_NON_GLOBAL
+                                          | VMCPU_FF_PDM_CRITSECT)
             )
        )
@@ -195,5 +197,5 @@
             rc = VINF_EM_NO_MEMORY;
         /* Pending Ring-3 action. */
-        else if (VMCPU_FF_ISPENDING(pVCpu, VMCPU_FF_TO_R3))
+        else if (VMCPU_FF_ISPENDING(pVCpu, VMCPU_FF_TO_R3 | VMCPU_FF_PDM_CRITSECT))
         {
             VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_TO_R3);