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migration: Rename MIG_EVENT_PRECOPY_* to MIG_EVENT_*

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All three events are shared between precopy and postcopy, rather than
precopy specific.

For example, both precopy and postcopy will go through a SETUP process.

Meanwhile, both FAILED and DONE notifiers will be notified for either
precopy or postcopy on completions / failures.

Rename them to make them match what they do, and shorter.

Reviewed-by: Fabiano Rosas <farosas@suse.de>
Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Peter Xu <peterx@redhat.com>
Link: https://lore.kernel.org/qemu-devel/20260126213614.3815900-6-peterx@redhat.com
[fixed-up entry in scsi-disk.c that got merged first]
Signed-off-by: Fabiano Rosas <farosas@suse.de>
This commit is contained in:
Peter Xu
2026-01-26 16:36:14 -05:00
committed by Fabiano Rosas
parent 7da1fba27e
commit a545fafccf
11 changed files with 31 additions and 35 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
hw/intc/arm_gicv3_kvm.c
View File

@@ -774,7 +774,7 @@ static void vm_change_state_handler(void *opaque, bool running,
static int kvm_arm_gicv3_notifier(NotifierWithReturn *notifier,
MigrationEvent *e, Error **errp)
{
if (e->type == MIG_EVENT_PRECOPY_DONE) {
if (e->type == MIG_EVENT_DONE) {
GICv3State *s = container_of(notifier, GICv3State, cpr_notifier);
return kvm_device_access(s->dev_fd, KVM_DEV_ARM_VGIC_GRP_CTRL,
KVM_DEV_ARM_VGIC_SAVE_PENDING_TABLES,

4
hw/net/virtio-net.c
View File

@@ -3789,7 +3789,7 @@ static void virtio_net_handle_migration_primary(VirtIONet *n, MigrationEvent *e)
should_be_hidden = qatomic_read(&n->failover_primary_hidden);
if (e->type == MIG_EVENT_PRECOPY_SETUP && !should_be_hidden) {
if (e->type == MIG_EVENT_SETUP && !should_be_hidden) {
if (failover_unplug_primary(n, dev)) {
vmstate_unregister(VMSTATE_IF(dev), qdev_get_vmsd(dev), dev);
qapi_event_send_unplug_primary(dev->id);
@@ -3797,7 +3797,7 @@ static void virtio_net_handle_migration_primary(VirtIONet *n, MigrationEvent *e)
} else {
warn_report("couldn't unplug primary device");
}
} else if (e->type == MIG_EVENT_PRECOPY_FAILED) {
} else if (e->type == MIG_EVENT_FAILED) {
/* We already unplugged the device let's plug it back */
if (!failover_replug_primary(n, dev, &err)) {
if (err) {

4
hw/scsi/scsi-disk.c
View File

@@ -2747,14 +2747,14 @@ static SCSIRequest *scsi_new_request(SCSIDevice *d, uint32_t tag, uint32_t lun,
static int scsi_block_migration_notifier(NotifierWithReturn *notifier,
MigrationEvent *e, Error **errp)
{
if (e->type == MIG_EVENT_PRECOPY_FAILED) {
if (e->type == MIG_EVENT_FAILED) {
SCSIDiskState *s =
container_of(notifier, SCSIDiskState, migration_notifier);
SCSIDevice *d = &s->qdev;
Error *local_err = NULL;
if (!scsi_generic_pr_state_preempt(d, &local_err)) {
/* MIG_EVENT_PRECOPY_FAILED cannot fail, so just warn */
/* MIG_EVENT_FAILED cannot fail, so just warn */
error_prepend(&local_err, "scsi-block migration rollback: ");
warn_report_err(local_err);
}

2
hw/vfio/cpr-legacy.c
View File

@@ -137,7 +137,7 @@ static int vfio_cpr_fail_notifier(NotifierWithReturn *notifier,
container_of(notifier, VFIOLegacyContainer, cpr.transfer_notifier);
VFIOContainer *bcontainer = VFIO_IOMMU(container);
if (e->type != MIG_EVENT_PRECOPY_FAILED) {
if (e->type != MIG_EVENT_FAILED) {
return 0;
}

8
hw/vfio/cpr.c
View File

@@ -18,7 +18,7 @@
int vfio_cpr_reboot_notifier(NotifierWithReturn *notifier,
MigrationEvent *e, Error **errp)
{
if (e->type == MIG_EVENT_PRECOPY_SETUP &&
if (e->type == MIG_EVENT_SETUP &&
!runstate_check(RUN_STATE_SUSPENDED) && !vm_get_suspended()) {
error_setg(errp,
@@ -186,7 +186,7 @@ static int vfio_cpr_kvm_close_notifier(NotifierWithReturn *notifier,
MigrationEvent *e,
Error **errp)
{
if (e->type == MIG_EVENT_PRECOPY_DONE) {
if (e->type == MIG_EVENT_DONE) {
vfio_kvm_device_close();
}
return 0;
@@ -272,9 +272,9 @@ static int vfio_cpr_pci_notifier(NotifierWithReturn *notifier,
VFIOPCIDevice *vdev =
container_of(notifier, VFIOPCIDevice, cpr.transfer_notifier);
if (e->type == MIG_EVENT_PRECOPY_SETUP) {
if (e->type == MIG_EVENT_SETUP) {
return vfio_cpr_set_msi_virq(vdev, errp, false);
} else if (e->type == MIG_EVENT_PRECOPY_FAILED) {
} else if (e->type == MIG_EVENT_FAILED) {
return vfio_cpr_set_msi_virq(vdev, errp, true);
}
return 0;

4
hw/vfio/migration.c
View File

@@ -917,10 +917,10 @@ static int vfio_migration_state_notifier(NotifierWithReturn *notifier,
trace_vfio_migration_state_notifier(vbasedev->name, e->type);
if (e->type == MIG_EVENT_PRECOPY_FAILED) {
if (e->type == MIG_EVENT_FAILED) {
/*
* MigrationNotifyFunc may not return an error code and an Error
* object for MIG_EVENT_PRECOPY_FAILED. Hence, report the error
* object for MIG_EVENT_FAILED. Hence, report the error
* locally and ignore the errp argument.
*/
ret = vfio_migration_set_state_or_reset(vbasedev,

18
include/migration/misc.h
View File

@@ -62,19 +62,15 @@ bool migration_thread_is_self(void);
/*
* Notifiers may receive events in any of the following orders:
*
* - MIG_EVENT_PRECOPY_SETUP [-> MIG_EVENT_POSTCOPY_START]
* -> MIG_EVENT_PRECOPY_DONE
*
* - MIG_EVENT_PRECOPY_SETUP [-> MIG_EVENT_POSTCOPY_START]
* -> MIG_EVENT_PRECOPY_FAILED
*
* - MIG_EVENT_PRECOPY_FAILED
* - MIG_EVENT_SETUP [-> MIG_EVENT_POSTCOPY_START] -> MIG_EVENT_DONE
* - MIG_EVENT_SETUP [-> MIG_EVENT_POSTCOPY_START] -> MIG_EVENT_FAILED
* - MIG_EVENT_FAILED
*/
typedef enum MigrationEventType {
MIG_EVENT_PRECOPY_SETUP,
MIG_EVENT_PRECOPY_DONE,
MIG_EVENT_PRECOPY_FAILED,
MIG_EVENT_SETUP,
MIG_EVENT_POSTCOPY_START,
MIG_EVENT_DONE,
MIG_EVENT_FAILED,
MIG_EVENT_MAX
} MigrationEventType;
@@ -84,7 +80,7 @@ typedef struct MigrationEvent {
/*
* A MigrationNotifyFunc may return an error code and an Error object,
* but only when @e->type is MIG_EVENT_PRECOPY_SETUP. The code is an int
* but only when @e->type is MIG_EVENT_SETUP. The code is an int
* to allow for different failure modes and recovery actions.
*/
typedef int (*MigrationNotifyFunc)(NotifierWithReturn *notify,

6
migration/cpr-exec.c
View File

@@ -164,7 +164,7 @@ static void cpr_exec_cb(void *opaque)
err = NULL;
/* Note, we can go from state COMPLETED to FAILED */
migration_call_notifiers(MIG_EVENT_PRECOPY_FAILED, NULL);
migration_call_notifiers(MIG_EVENT_FAILED, NULL);
if (!migration_block_activate(&err)) {
/* error was already reported */
@@ -182,12 +182,12 @@ static int cpr_exec_notifier(NotifierWithReturn *notifier, MigrationEvent *e,
{
MigrationState *s = migrate_get_current();
if (e->type == MIG_EVENT_PRECOPY_DONE) {
if (e->type == MIG_EVENT_DONE) {
QEMUBH *cpr_exec_bh = qemu_bh_new(cpr_exec_cb, NULL);
assert(s->state == MIGRATION_STATUS_COMPLETED);
qemu_bh_schedule(cpr_exec_bh);
qemu_notify_event();
} else if (e->type == MIG_EVENT_PRECOPY_FAILED) {
} else if (e->type == MIG_EVENT_FAILED) {
cpr_exec_unpersist_state();
}
return 0;

8
migration/migration.c
View File

@@ -1337,7 +1337,7 @@ static void migration_cleanup(MigrationState *s)
* migration completed successfully.
*/
if (!migration_has_failed(s)) {
migration_call_notifiers(MIG_EVENT_PRECOPY_DONE, NULL);
migration_call_notifiers(MIG_EVENT_DONE, NULL);
}
yank_unregister_instance(MIGRATION_YANK_INSTANCE);
@@ -1541,7 +1541,7 @@ int migration_call_notifiers(MigrationEventType type, Error **errp)
notifier = (NotifierWithReturn *)elem->data;
ret = notifier->notify(notifier, &e, errp);
if (ret) {
assert(type == MIG_EVENT_PRECOPY_SETUP);
assert(type == MIG_EVENT_SETUP);
return ret;
}
}
@@ -3331,7 +3331,7 @@ static void migration_iteration_finish(MigrationState *s)
* Notify FAILED before starting VM, so that devices can invoke
* necessary fallbacks before vCPUs run again.
*/
migration_call_notifiers(MIG_EVENT_PRECOPY_FAILED, NULL);
migration_call_notifiers(MIG_EVENT_FAILED, NULL);
if (runstate_is_live(s->vm_old_state)) {
if (!runstate_check(RUN_STATE_SHUTDOWN)) {
@@ -3769,7 +3769,7 @@ void migration_start_outgoing(MigrationState *s)
rate_limit = migrate_max_bandwidth();
/* Notify before starting migration thread */
if (migration_call_notifiers(MIG_EVENT_PRECOPY_SETUP, &local_err)) {
if (migration_call_notifiers(MIG_EVENT_SETUP, &local_err)) {
goto fail;
}
}

4
net/vhost-vdpa.c
View File

@@ -378,9 +378,9 @@ static int vdpa_net_migration_state_notifier(NotifierWithReturn *notifier,
{
VhostVDPAState *s = container_of(notifier, VhostVDPAState, migration_state);
if (e->type == MIG_EVENT_PRECOPY_SETUP) {
if (e->type == MIG_EVENT_SETUP) {
vhost_vdpa_net_log_global_enable(s, true);
} else if (e->type == MIG_EVENT_PRECOPY_FAILED) {
} else if (e->type == MIG_EVENT_FAILED) {
vhost_vdpa_net_log_global_enable(s, false);
}
return 0;

6
ui/spice-core.c
View File

@@ -583,13 +583,13 @@ static int migration_state_notifier(NotifierWithReturn *notifier,
return 0;
}
if (e->type == MIG_EVENT_PRECOPY_SETUP) {
if (e->type == MIG_EVENT_SETUP) {
spice_server_migrate_start(spice_server);
} else if (e->type == MIG_EVENT_PRECOPY_DONE ||
} else if (e->type == MIG_EVENT_DONE ||
e->type == MIG_EVENT_POSTCOPY_START) {
spice_server_migrate_end(spice_server, true);
spice_have_target_host = false;
} else if (e->type == MIG_EVENT_PRECOPY_FAILED) {
} else if (e->type == MIG_EVENT_FAILED) {
spice_server_migrate_end(spice_server, false);
spice_have_target_host = false;
}