> diff --git a/mm/Kconfig b/mm/Kconfig > --- a/mm/Kconfig > +++ b/mm/Kconfig > @@ -205,3 +205,6 @@ config VIRT_TO_BUS > config VIRT_TO_BUS > def_bool y > depends on !ARCH_NO_VIRT_TO_BUS > + > +config MMU_NOTIFIER > + bool Without some text following the bool keyword, I am not even asked for this config setting on my ia64 build. Thanks, Robin