Index: /trunk/include/VBox/vmm/gmm.h
===================================================================
--- /trunk/include/VBox/vmm/gmm.h	(revision 67993)
+++ /trunk/include/VBox/vmm/gmm.h	(revision 67994)
@@ -406,5 +406,5 @@
                                         uint32_t cPagesToAlloc, PGMMPAGEDESC paPages);
 GMMR0DECL(int)  GMMR0AllocatePages(PVM pVM, VMCPUID idCpu, uint32_t cPages, PGMMPAGEDESC paPages, GMMACCOUNT enmAccount);
-GMMR0DECL(int)  GMMR0AllocateLargePage(PVM pVM, VMCPUID idCpu, uint32_t cbPage, uint32_t *pIdPage, RTHCPHYS *pHCPhys);
+GMMR0DECL(int)  GMMR0AllocateLargePage(PGVM pGVM, PVM pVM, VMCPUID idCpu, uint32_t cbPage, uint32_t *pIdPage, RTHCPHYS *pHCPhys);
 GMMR0DECL(int)  GMMR0FreePages(PVM pVM, VMCPUID idCpu, uint32_t cPages, PGMMFREEPAGEDESC paPages, GMMACCOUNT enmAccount);
 GMMR0DECL(int)  GMMR0FreeLargePage(PVM pVM, VMCPUID idCpu, uint32_t idPage);
Index: /trunk/include/VBox/vmm/pgm.h
===================================================================
--- /trunk/include/VBox/vmm/pgm.h	(revision 67993)
+++ /trunk/include/VBox/vmm/pgm.h	(revision 67994)
@@ -694,5 +694,5 @@
 VMMR0_INT_DECL(int) PGMR0PhysAllocateHandyPages(PGVM pGVM, PVM pVM, VMCPUID idCpu);
 VMMR0_INT_DECL(int) PGMR0PhysFlushHandyPages(PGVM pGVM, PVM pVM, VMCPUID idCpu);
-VMMR0_INT_DECL(int) PGMR0PhysAllocateLargeHandyPage(PVM pVM, PVMCPU pVCpu);
+VMMR0_INT_DECL(int) PGMR0PhysAllocateLargeHandyPage(PGVM pGVM, PVM pVM, VMCPUID idCpu);
 VMMR0_INT_DECL(int) PGMR0PhysSetupIommu(PVM pVM);
 VMMR0DECL(int)      PGMR0SharedModuleCheck(PVM pVM, PGVM pGVM, VMCPUID idCpu, PGMMSHAREDMODULE pModule, PCRTGCPTR64 paRegionsGCPtrs);
Index: /trunk/src/VBox/VMM/VMMR0/GMMR0.cpp
===================================================================
--- /trunk/src/VBox/VMM/VMMR0/GMMR0.cpp	(revision 67993)
+++ /trunk/src/VBox/VMM/VMMR0/GMMR0.cpp	(revision 67994)
@@ -3020,4 +3020,5 @@
  * @returns see GMMR0AllocatePages.
  *
+ * @param   pGVM        The global (ring-0) VM structure.
  * @param   pVM         The cross context VM structure.
  * @param   idCpu       The VCPU id.
@@ -3026,7 +3027,7 @@
  * @param   pHCPhys     Where to return the host physical address of the page.
  */
-GMMR0DECL(int)  GMMR0AllocateLargePage(PVM pVM, VMCPUID idCpu, uint32_t cbPage, uint32_t *pIdPage, RTHCPHYS *pHCPhys)
-{
-    LogFlow(("GMMR0AllocateLargePage: pVM=%p cbPage=%x\n", pVM, cbPage));
+GMMR0DECL(int)  GMMR0AllocateLargePage(PGVM pGVM, PVM pVM, VMCPUID idCpu, uint32_t cbPage, uint32_t *pIdPage, RTHCPHYS *pHCPhys)
+{
+    LogFlow(("GMMR0AllocateLargePage: pGVM=%p pVM=%p cbPage=%x\n", pGVM, pVM, cbPage));
 
     AssertReturn(cbPage == GMM_CHUNK_SIZE, VERR_INVALID_PARAMETER);
@@ -3039,6 +3040,5 @@
     PGMM pGMM;
     GMM_GET_VALID_INSTANCE(pGMM, VERR_GMM_INSTANCE);
-    PGVM pGVM;
-    int rc = GVMMR0ByVMAndEMT(pVM, idCpu, &pGVM);
+    int rc = GVMMR0ValidateGVMandVMandEMT(pGVM, pVM, idCpu);
     if (RT_FAILURE(rc))
         return rc;
Index: /trunk/src/VBox/VMM/VMMR0/PGMR0.cpp
===================================================================
--- /trunk/src/VBox/VMM/VMMR0/PGMR0.cpp	(revision 67993)
+++ /trunk/src/VBox/VMM/VMMR0/PGMR0.cpp	(revision 67994)
@@ -228,16 +228,30 @@
  * @retval  VINF_EM_NO_MEMORY if we're out of memory.
  *
+ * @param   pGVM        The global (ring-0) VM structure.
  * @param   pVM         The cross context VM structure.
- * @param   pVCpu       The cross context virtual CPU structure.
+ * @param   idCpu       The ID of the calling EMT.
+ *
+ * @thread  EMT(idCpu)
  *
  * @remarks Must be called from within the PGM critical section. The caller
  *          must clear the new pages.
  */
-VMMR0_INT_DECL(int) PGMR0PhysAllocateLargeHandyPage(PVM pVM, PVMCPU pVCpu)
-{
+VMMR0_INT_DECL(int) PGMR0PhysAllocateLargeHandyPage(PGVM pGVM, PVM pVM, VMCPUID idCpu)
+{
+    /*
+     * Validate inputs.
+     */
+    AssertReturn(idCpu < pGVM->cCpus, VERR_INVALID_CPU_ID); /* caller already checked this, but just to be sure. */
+    AssertReturn(pGVM->aCpus[idCpu].hEMT == RTThreadNativeSelf(), VERR_NOT_OWNER);
+    PVMCPU pVCpu = &pVM->aCpus[idCpu];
+
     PGM_LOCK_ASSERT_OWNER_EX(pVM, pVCpu);
+
     Assert(!pVM->pgm.s.cLargeHandyPages);
 
-    int rc = GMMR0AllocateLargePage(pVM, pVCpu->idCpu, _2M,
+    /*
+     * Do the job.
+     */
+    int rc = GMMR0AllocateLargePage(pGVM, pVM, idCpu, _2M,
                                     &pVM->pgm.s.aLargeHandyPage[0].idPage,
                                     &pVM->pgm.s.aLargeHandyPage[0].HCPhysGCPhys);
Index: /trunk/src/VBox/VMM/VMMR0/VMMR0.cpp
===================================================================
--- /trunk/src/VBox/VMM/VMMR0/VMMR0.cpp	(revision 67993)
+++ /trunk/src/VBox/VMM/VMMR0/VMMR0.cpp	(revision 67994)
@@ -1648,5 +1648,5 @@
             if (idCpu == NIL_VMCPUID)
                 return VERR_INVALID_CPU_ID;
-            rc = PGMR0PhysAllocateLargeHandyPage(pVM, &pVM->aCpus[idCpu]);
+            rc = PGMR0PhysAllocateLargeHandyPage(pGVM, pVM, idCpu);
             VMM_CHECK_SMAP_CHECK2(pVM, RT_NOTHING);
             break;