__pkvm_reserve_vm
int __pkvm_reserve_vm(void);
cpu_reg(host_ctxt, 1) = __pkvm_reserve_vm();
HANDLE_FUNC(__pkvm_reserve_vm),
selftest_vm.kvm.arch.pkvm.handle = __pkvm_reserve_vm();
ret = kvm_call_hyp_nvhe(__pkvm_reserve_vm);