__pkvm_host_test_clear_young_guest
int __pkvm_host_test_clear_young_guest(u64 gfn, u64 nr_pages, bool mkold, struct pkvm_hyp_vm *vm);
ret = __pkvm_host_test_clear_young_guest(gfn, nr_pages, mkold, hyp_vm);
HANDLE_FUNC(__pkvm_host_test_clear_young_guest),
young |= kvm_call_hyp_nvhe(__pkvm_host_test_clear_young_guest, handle, mapping->gfn,