diff --git a/exec.c b/exec.c
index a028961587..4ced1a6011 100644
--- a/exec.c
+++ b/exec.c
@@ -3502,6 +3502,16 @@ int cpu_memory_rw_debug(CPUState *cpu, target_ulong addr,
     }
     return 0;
 }
+
+/*
+ * Allows code that needs to deal with migration bitmaps etc to still be built
+ * target independent.
+ */
+size_t qemu_target_page_bits(void)
+{
+    return TARGET_PAGE_BITS;
+}
+
 #endif
 
 /*
diff --git a/include/sysemu/sysemu.h b/include/sysemu/sysemu.h
index 5cb0f05068..8dc2add833 100644
--- a/include/sysemu/sysemu.h
+++ b/include/sysemu/sysemu.h
@@ -70,6 +70,7 @@ void qemu_system_killed(int signal, pid_t pid);
 void qemu_devices_reset(void);
 void qemu_system_reset(bool report);
 void qemu_system_guest_panicked(void);
+size_t qemu_target_page_bits(void);
 
 void qemu_add_exit_notifier(Notifier *notify);
 void qemu_remove_exit_notifier(Notifier *notify);