on_user_return    314 arch/x86/kvm/x86.c 		smsr->urn.on_user_return = kvm_on_user_return;
on_user_return     11 include/linux/user-return-notifier.h 	void (*on_user_return)(struct user_return_notifier *urn);
on_user_return     43 kernel/user-return-notifier.c 		urn->on_user_return(urn);