static void do_info_balloon(Monitor *mon, QObject **ret_data) { ram_addr_t actual; actual = qemu_balloon_status(); if (kvm_enabled() && !kvm_has_sync_mmu()) qemu_error_new(QERR_KVM_MISSING_CAP, "synchronous MMU", "balloon"); else if (actual == 0) qemu_error_new(QERR_DEVICE_NOT_ACTIVE, "balloon"); else *ret_data = qobject_from_jsonf("{ 'balloon': %" PRId64 "}", (int64_t) actual); }