1 /* 2 * Copyright (c) 2021-2024 Oracle and/or its affiliates. 3 * 4 * This work is licensed under the terms of the GNU GPL, version 2 or later. 5 * See the COPYING file in the top-level directory. 6 */ 7 8 #include "qemu/osdep.h" 9 #include "hw/vfio/vfio-device.h" 10 #include "migration/misc.h" 11 #include "qapi/error.h" 12 #include "system/runstate.h" 13 #include "vfio-cpr.h" 14 15 static int vfio_cpr_reboot_notifier(NotifierWithReturn *notifier, 16 MigrationEvent *e, Error **errp) 17 { 18 if (e->type == MIG_EVENT_PRECOPY_SETUP && 19 !runstate_check(RUN_STATE_SUSPENDED) && !vm_get_suspended()) { 20 21 error_setg(errp, 22 "VFIO device only supports cpr-reboot for runstate suspended"); 23 24 return -1; 25 } 26 return 0; 27 } 28 29 bool vfio_cpr_register_container(VFIOContainerBase *bcontainer, Error **errp) 30 { 31 migration_add_notifier_mode(&bcontainer->cpr_reboot_notifier, 32 vfio_cpr_reboot_notifier, 33 MIG_MODE_CPR_REBOOT); 34 return true; 35 } 36 37 void vfio_cpr_unregister_container(VFIOContainerBase *bcontainer) 38 { 39 migration_remove_notifier(&bcontainer->cpr_reboot_notifier); 40 } 41