Index: VirtualBox-5.1.12/src/VBox/Runtime/r0drv/linux/memobj-r0drv-linux.c
===================================================================
--- VirtualBox-5.1.12.orig/src/VBox/Runtime/r0drv/linux/memobj-r0drv-linux.c
+++ VirtualBox-5.1.12/src/VBox/Runtime/r0drv/linux/memobj-r0drv-linux.c
@@ -1078,7 +1078,12 @@ DECLHIDDEN(int) rtR0MemObjNativeLockUser
                                 fWrite,                 /* force write access. */
 # endif
                                 &pMemLnx->apPages[0],   /* Page array. */
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 10, 0)
+                                papVMAs,		/* vmas */
+				NULL);
+#else
                                 papVMAs);               /* vmas */
+#endif
 #else /* LINUX_VERSION_CODE < KERNEL_VERSION(4, 6, 0) */
             rc = get_user_pages(pTask,                  /* Task for fault accounting. */
                                 pTask->mm,              /* Whose pages. */
@@ -1093,7 +1098,12 @@ DECLHIDDEN(int) rtR0MemObjNativeLockUser
                                 fWrite,                 /* force write access. */
 # endif
                                 &pMemLnx->apPages[0],   /* Page array. */
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 10, 0)
+                                papVMAs,		/* vmas */
+				NULL);
+#else
                                 papVMAs);               /* vmas */
+#endif
 #endif /* LINUX_VERSION_CODE < KERNEL_VERSION(4, 6, 0) */
         if (rc == cPages)
         {
Index: VirtualBox-5.1.12/src/VBox/Runtime/r0drv/linux/mpnotification-r0drv-linux.c
===================================================================
--- VirtualBox-5.1.12.orig/src/VBox/Runtime/r0drv/linux/mpnotification-r0drv-linux.c
+++ VirtualBox-5.1.12/src/VBox/Runtime/r0drv/linux/mpnotification-r0drv-linux.c
@@ -39,8 +39,32 @@
 
 
 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 5, 71) && defined(CONFIG_SMP)
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 10, 0)
+/* This hack allows VB to build under kernel 4.10 and later, but it
+ * should be replaced with a version that uses the hotplug state machine
+ */
 
+static DEFINE_MUTEX(cpu_add_remove_lock);
+static RAW_NOTIFIER_HEAD(cpu_chain);
 
+/* Need to know about CPUs going up/down? */
+static int register_cpu_notifier(struct notifier_block *nb)
+{
+	int ret;
+        mutex_lock(&cpu_add_remove_lock);
+	ret = raw_notifier_chain_register(&cpu_chain, nb);
+        mutex_unlock(&cpu_add_remove_lock);
+	return ret;
+}
+
+/* Need to know about CPUs going up/down? */
+static void unregister_cpu_notifier(struct notifier_block *nb)
+{
+        mutex_lock(&cpu_add_remove_lock);
+	raw_notifier_chain_unregister(&cpu_chain, nb);
+        mutex_unlock(&cpu_add_remove_lock);
+}
+#endif
 /*********************************************************************************************************************************
 *   Internal Functions                                                                                                           *
 *********************************************************************************************************************************/