Index: /trunk/src/VBox/VMM/VMMR3/CPUM.cpp
===================================================================
--- /trunk/src/VBox/VMM/VMMR3/CPUM.cpp	(revision 82705)
+++ /trunk/src/VBox/VMM/VMMR3/CPUM.cpp	(revision 82706)
@@ -1071,4 +1071,8 @@
         /*
          * Allocate the MSRPM (MSR Permission bitmap).
+         *
+         * This need not be physically contiguous pages because we use the one from
+         * HMPHYSCPU while executing the nested-guest using hardware-assisted SVM.
+         * This one is just used for caching the bitmap from guest physical memory.
          */
         Assert(!pVCpu->cpum.s.Guest.hwvirt.svm.pvMsrBitmapR3);
@@ -1085,4 +1089,11 @@
         /*
          * Allocate the IOPM (IO Permission bitmap).
+         *
+         * This need not be physically contiguous pages because we re-use the ring-0
+         * allocated IOPM while executing the nested-guest using hardware-assisted SVM
+         * because it's identical (we trap all IO accesses).
+         *
+         * This one is just used for caching the IOPM from guest physical memory in
+         * case the guest hypervisor allows direct access to some IO ports.
          */
         Assert(!pVCpu->cpum.s.Guest.hwvirt.svm.pvIoBitmapR3);