diff -Naur old/vboxdrv/r0drv/linux/memobj-r0drv-linux.c new/vboxdrv/r0drv/linux/memobj-r0drv-linux.c
--- old/vboxdrv/r0drv/linux/memobj-r0drv-linux.c	2010-11-30 16:00:24.000000000 +0100
+++ new/vboxdrv/r0drv/linux/memobj-r0drv-linux.c	2012-12-12 10:37:43.880169541 +0100
@@ -50,6 +50,10 @@
 # define PAGE_READONLY_EXEC PAGE_READONLY
 #endif
 
+#ifndef VM_RESERVED
+# define  VM_RESERVED   (VM_DONTEXPAND | VM_DONTDUMP)
+#endif
+
 /*
  * 2.6.29+ kernels don't work with remap_pfn_range() anymore because
  * track_pfn_vma_new() is apparently not defined for non-RAM pages.