Index: /trunk/src/VBox/VMM/VMMAll/PGMAllHandler.cpp
===================================================================
--- /trunk/src/VBox/VMM/VMMAll/PGMAllHandler.cpp	(revision 19998)
+++ /trunk/src/VBox/VMM/VMMAll/PGMAllHandler.cpp	(revision 19999)
@@ -1126,5 +1126,8 @@
             PGM_PAGE_SET_TYPE(pPage, PGMPAGETYPE_MMIO2_ALIAS_MMIO);
             PGM_PAGE_SET_STATE(pPage, PGM_PAGE_STATE_ALLOCATED);
-            /** @todo hack alert */
+            /** @todo hack alert
+             *  This needs to be done properly. Currently we get away with it as the recompiler directly calls
+             *  IOM read and write functions. Access through PGMPhysRead/Write will crash the process. 
+             */
             PGM_PAGE_SET_PAGEID(pPage, NIL_GMM_PAGEID);
             PGM_PAGE_SET_HNDL_PHYS_STATE(pPage, PGM_PAGE_HNDL_PHYS_STATE_DISABLED);