Index: /trunk/src/VBox/VMM/PGMPhys.cpp
===================================================================
--- /trunk/src/VBox/VMM/PGMPhys.cpp	(revision 30838)
+++ /trunk/src/VBox/VMM/PGMPhys.cpp	(revision 30839)
@@ -3442,4 +3442,5 @@
  *
  * @remarks Called from within the PGM critical section.
+ * @remarks Can be called from any thread!
  */
 int pgmR3PhysChunkMap(PVM pVM, uint32_t idChunk, PPPGMCHUNKR3MAP ppChunk)
@@ -3490,5 +3491,5 @@
 #ifdef VBOX_WITH_LARGE_ADDRESS_SPACE_ON_32_BIT_HOST
             /* Postpone the unmap operation (which requires a rendezvous operation) as we own the PGM lock here. */
-            rc = VMR3ReqCallNoWaitU(pVM->pUVM, VMCPUID_ANY_QUEUE, (PFNRT)pgmR3PhysUnmapChunk, 1, pVM);
+            rc = VMR3ReqCallNoWaitU(pVM->pUVM, VMCPUID_ANY, (PFNRT)pgmR3PhysUnmapChunk, 1, pVM);
             AssertRC(rc);
 #else