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machine: introduce MachineInitPhase

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Generalize the qdev_hotplug variable to the different phases of
machine initialization.  We would like to allow different
monitor commands depending on the phase.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Paolo Bonzini 2020-11-12 09:38:36 -05:00
parent 5a1ee6077b
commit 2f181fbd5a
11 changed files with 73 additions and 32 deletions
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32
include/hw/qdev-core.h
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@ -786,7 +786,6 @@ Object *qdev_get_machine(void);
/* FIXME: make this a link<> */
bool qdev_set_parent_bus(DeviceState *dev, BusState *bus, Error **errp);
extern bool qdev_hotplug;
extern bool qdev_hot_removed;
char *qdev_get_dev_path(DeviceState *dev);
@ -812,4 +811,35 @@ void device_listener_unregister(DeviceListener *listener);
*/
bool qdev_should_hide_device(QemuOpts *opts);
typedef enum MachineInitPhase {
/* current_machine is NULL. */
PHASE_NO_MACHINE,
/* current_machine is not NULL, but current_machine->accel is NULL. */
PHASE_MACHINE_CREATED,
/*
* current_machine->accel is not NULL, but the machine properties have
* not been validated and machine_class->init has not yet been called.
*/
PHASE_ACCEL_CREATED,
/*
* machine_class->init has been called, thus creating any embedded
* devices and validating machine properties. Devices created at
* this time are considered to be cold-plugged.
*/
PHASE_MACHINE_INITIALIZED,
/*
* QEMU is ready to start CPUs and devices created at this time
* are considered to be hot-plugged. The monitor is not restricted
* to "preconfig" commands.
*/
PHASE_MACHINE_READY,
} MachineInitPhase;
extern bool phase_check(MachineInitPhase phase);
extern void phase_advance(MachineInitPhase phase);
#endif