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d05de9e39a
qemu_savevm_nr_failover_devices() is originally designed to get the number of failover devices, but it actually returns the number of "unplug-pending" failover devices now. Moreover, what drives migration state to wait-unplug should be the number of "unplug-pending" failover devices, not all failover devices. We can also notice that qemu_savevm_state_guest_unplug_pending() and qemu_savevm_nr_failover_devices() is equivalent almost (from the code view). So the latter is incorrect semantically and useless, just delete it. In the qemu_savevm_state_guest_unplug_pending(), once hit a unplug-pending failover device, then it can return true right now to save cpu time. Signed-off-by: Keqian Zhu <zhukeqian1@huawei.com> Reviewed-by: Juan Quintela <quintela@redhat.com> Tested-by: Jens Freimann <jfreimann@redhat.com> Reviewed-by: Jens Freimann <jfreimann@redhat.com> Signed-off-by: Juan Quintela <quintela@redhat.com>
69 lines
2.7 KiB
C
69 lines
2.7 KiB
C
/*
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* QEMU save vm functions
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*
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* Copyright (c) 2003-2008 Fabrice Bellard
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* Copyright (c) 2009-2017 Red Hat Inc
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*
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* Authors:
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* Juan Quintela <quintela@redhat.com>
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or later.
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* See the COPYING file in the top-level directory.
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*/
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#ifndef MIGRATION_SAVEVM_H
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#define MIGRATION_SAVEVM_H
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#define QEMU_VM_FILE_MAGIC 0x5145564d
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#define QEMU_VM_FILE_VERSION_COMPAT 0x00000002
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#define QEMU_VM_FILE_VERSION 0x00000003
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#define QEMU_VM_EOF 0x00
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#define QEMU_VM_SECTION_START 0x01
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#define QEMU_VM_SECTION_PART 0x02
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#define QEMU_VM_SECTION_END 0x03
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#define QEMU_VM_SECTION_FULL 0x04
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#define QEMU_VM_SUBSECTION 0x05
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#define QEMU_VM_VMDESCRIPTION 0x06
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#define QEMU_VM_CONFIGURATION 0x07
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#define QEMU_VM_COMMAND 0x08
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#define QEMU_VM_SECTION_FOOTER 0x7e
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bool qemu_savevm_state_blocked(Error **errp);
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void qemu_savevm_state_setup(QEMUFile *f);
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bool qemu_savevm_state_guest_unplug_pending(void);
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int qemu_savevm_state_resume_prepare(MigrationState *s);
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void qemu_savevm_state_header(QEMUFile *f);
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int qemu_savevm_state_iterate(QEMUFile *f, bool postcopy);
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void qemu_savevm_state_cleanup(void);
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void qemu_savevm_state_complete_postcopy(QEMUFile *f);
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int qemu_savevm_state_complete_precopy(QEMUFile *f, bool iterable_only,
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bool inactivate_disks);
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void qemu_savevm_state_pending(QEMUFile *f, uint64_t max_size,
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uint64_t *res_precopy_only,
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uint64_t *res_compatible,
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uint64_t *res_postcopy_only);
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void qemu_savevm_send_ping(QEMUFile *f, uint32_t value);
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void qemu_savevm_send_open_return_path(QEMUFile *f);
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int qemu_savevm_send_packaged(QEMUFile *f, const uint8_t *buf, size_t len);
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void qemu_savevm_send_postcopy_advise(QEMUFile *f);
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void qemu_savevm_send_postcopy_listen(QEMUFile *f);
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void qemu_savevm_send_postcopy_run(QEMUFile *f);
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void qemu_savevm_send_postcopy_resume(QEMUFile *f);
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void qemu_savevm_send_recv_bitmap(QEMUFile *f, char *block_name);
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void qemu_savevm_send_postcopy_ram_discard(QEMUFile *f, const char *name,
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uint16_t len,
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uint64_t *start_list,
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uint64_t *length_list);
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void qemu_savevm_send_colo_enable(QEMUFile *f);
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void qemu_savevm_live_state(QEMUFile *f);
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int qemu_save_device_state(QEMUFile *f);
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int qemu_loadvm_state(QEMUFile *f);
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void qemu_loadvm_state_cleanup(void);
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int qemu_loadvm_state_main(QEMUFile *f, MigrationIncomingState *mis);
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int qemu_load_device_state(QEMUFile *f);
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#endif
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