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[RFC PATCH v2 02/16] qapi: Implement query-machine-phase QMP command
From: |
Damien Hedde |
Subject: |
[RFC PATCH v2 02/16] qapi: Implement query-machine-phase QMP command |
Date: |
Wed, 22 Sep 2021 18:13:51 +0200 |
From: Mirela Grujic <mirela.grujic@greensocs.com>
The command returns current machine initialization phase.
>From now on, the MachineInitPhase enum is generated from the
QAPI schema.
Signed-off-by: Mirela Grujic <mirela.grujic@greensocs.com>
---
qapi/machine.json | 56 ++++++++++++++++++++++++++++++++++++++
include/hw/qdev-core.h | 30 ++------------------
hw/core/machine-qmp-cmds.c | 9 ++++++
hw/core/qdev.c | 5 ++++
4 files changed, 72 insertions(+), 28 deletions(-)
diff --git a/qapi/machine.json b/qapi/machine.json
index 157712f006..969d37fb03 100644
--- a/qapi/machine.json
+++ b/qapi/machine.json
@@ -1312,3 +1312,59 @@
'*cores': 'int',
'*threads': 'int',
'*maxcpus': 'int' } }
+
+##
+# @MachineInitPhase:
+#
+# Enumeration of machine initialization phases.
+#
+# @no-machine: machine does not exist
+#
+# @machine-created: machine is created, but its accelerator is not
+#
+# @accel-created: accelerator is created, but the machine properties have not
+# been validated and machine initialization is not done yet
+#
+# @initialized: machine is initialized, thus creating any embedded devices and
+# validating machine properties. Devices created at this time are
+# considered to be cold-plugged.
+#
+# @ready: 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.
+#
+# Since: 6.2
+##
+{ 'enum': 'MachineInitPhase',
+ 'data': [ 'no-machine', 'machine-created', 'accel-created', 'initialized',
+ 'ready' ] }
+
+##
+# @MachineInitPhaseStatus:
+#
+# Information about machine initialization phase
+#
+# @phase: the machine initialization phase
+#
+# Since: 6.2
+##
+{ 'struct': 'MachineInitPhaseStatus',
+ 'data': { 'phase': 'MachineInitPhase' } }
+
+##
+# @query-machine-phase:
+#
+# Return machine initialization phase
+#
+# Since: 6.2
+#
+# Returns: MachineInitPhaseStatus
+#
+# Example:
+#
+# -> { "execute": "query-machine-phase" }
+# <- { "return": { "phase": "initialized" } }
+#
+##
+{ 'command': 'query-machine-phase', 'returns': 'MachineInitPhaseStatus',
+ 'allow-preconfig': true }
diff --git a/include/hw/qdev-core.h b/include/hw/qdev-core.h
index 859fd913bb..800eda8f54 100644
--- a/include/hw/qdev-core.h
+++ b/include/hw/qdev-core.h
@@ -1,6 +1,7 @@
#ifndef QDEV_CORE_H
#define QDEV_CORE_H
+#include "qapi/qapi-types-machine.h"
#include "qemu/queue.h"
#include "qemu/bitmap.h"
#include "qemu/rcu.h"
@@ -839,35 +840,8 @@ void device_listener_unregister(DeviceListener *listener);
*/
bool qdev_should_hide_device(QemuOpts *opts);
-typedef enum MachineInitPhase {
- /* current_machine is NULL. */
- MACHINE_INIT_PHASE_NO_MACHINE,
-
- /* current_machine is not NULL, but current_machine->accel is NULL. */
- MACHINE_INIT_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.
- */
- MACHINE_INIT_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.
- */
- MACHINE_INIT_PHASE_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.
- */
- MACHINE_INIT_PHASE_READY,
-} MachineInitPhase;
-
extern bool phase_check(MachineInitPhase phase);
extern void phase_advance(MachineInitPhase phase);
+extern MachineInitPhase phase_get(void);
#endif
diff --git a/hw/core/machine-qmp-cmds.c b/hw/core/machine-qmp-cmds.c
index 52168a3771..d3b9a04855 100644
--- a/hw/core/machine-qmp-cmds.c
+++ b/hw/core/machine-qmp-cmds.c
@@ -204,3 +204,12 @@ MemdevList *qmp_query_memdev(Error **errp)
object_child_foreach(obj, query_memdev, &list);
return list;
}
+
+MachineInitPhaseStatus *qmp_query_machine_phase(Error **errp)
+{
+ MachineInitPhaseStatus *status = g_malloc0(sizeof(*status));
+
+ status->phase = phase_get();
+
+ return status;
+}
diff --git a/hw/core/qdev.c b/hw/core/qdev.c
index c5fc704f55..d83f1c029a 100644
--- a/hw/core/qdev.c
+++ b/hw/core/qdev.c
@@ -1150,6 +1150,11 @@ void phase_advance(MachineInitPhase phase)
machine_phase = phase;
}
+MachineInitPhase phase_get(void)
+{
+ return machine_phase;
+}
+
static const TypeInfo device_type_info = {
.name = TYPE_DEVICE,
.parent = TYPE_OBJECT,
--
2.33.0
- [RFC PATCH v2 00/16] Initial support for machine creation via QMP, Damien Hedde, 2021/09/22
- [RFC PATCH v2 06/16] qapi: Allow device_add to execute in machine initialized phase, Damien Hedde, 2021/09/22
- [RFC PATCH v2 04/16] softmmu/qdev-monitor: add error handling in qdev_set_id, Damien Hedde, 2021/09/22
- [RFC PATCH v2 01/16] rename MachineInitPhase enum constants for QAPI compatibility, Damien Hedde, 2021/09/22
- [RFC PATCH v2 08/16] qdev-monitor: Check sysbus device type before creating it, Damien Hedde, 2021/09/22
- [RFC PATCH v2 05/16] qdev-monitor: prevent conflicts between qmp/device_add and cli/-device, Damien Hedde, 2021/09/22
- [RFC PATCH v2 07/16] hw/core/machine: add machine_class_is_dynamic_sysbus_dev_allowed, Damien Hedde, 2021/09/22