kvm_is_visible_gfn 205 include/linux/kvm_host.h int kvm_is_visible_gfn(struct kvm *kvm, gfn_t gfn); kvm_is_visible_gfn 1375 virt/kvm/kvm_main.c if (!kvm_is_visible_gfn(kvm, vmf->pgoff))