diff --git a/hw/core/qdev-properties-system.c b/hw/core/qdev-properties-system.c
index 7c6dfab128d62c390dd6920ba3d03d37d6fc6c61..b9179e8917315e3a68675acf714552a78fde76f5 100644
--- a/hw/core/qdev-properties-system.c
+++ b/hw/core/qdev-properties-system.c
@@ -673,6 +673,20 @@ const PropertyInfo qdev_prop_multifd_compression = {
.set_default_value = qdev_propinfo_set_default_value_enum,
};
+/* --- MigMode --- */
+
+QEMU_BUILD_BUG_ON(sizeof(MigMode) != sizeof(int));
+
+const PropertyInfo qdev_prop_mig_mode = {
+ .name = "MigMode",
+ .description = "mig_mode values, "
+ "normal",
+ .enum_table = &MigMode_lookup,
+ .get = qdev_propinfo_get_enum,
+ .set = qdev_propinfo_set_enum,
+ .set_default_value = qdev_propinfo_set_default_value_enum,
+};
+
/* --- Reserved Region --- */
/*
diff --git a/include/hw/qdev-properties-system.h b/include/hw/qdev-properties-system.h
index e4f8a13afc739f6283f01efec8802efc81199473..91f7a2452d94b777293b5da92fd096b84ff113b4 100644
--- a/include/hw/qdev-properties-system.h
+++ b/include/hw/qdev-properties-system.h
@@ -7,6 +7,7 @@ extern const PropertyInfo qdev_prop_chr;
extern const PropertyInfo qdev_prop_macaddr;
extern const PropertyInfo qdev_prop_reserved_region;
extern const PropertyInfo qdev_prop_multifd_compression;
+extern const PropertyInfo qdev_prop_mig_mode;
extern const PropertyInfo qdev_prop_losttickpolicy;
extern const PropertyInfo qdev_prop_blockdev_on_error;
extern const PropertyInfo qdev_prop_bios_chs_trans;
@@ -42,6 +43,9 @@ extern const PropertyInfo qdev_prop_cpus390entitlement;
#define DEFINE_PROP_MULTIFD_COMPRESSION(_n, _s, _f, _d) \
DEFINE_PROP_SIGNED(_n, _s, _f, _d, qdev_prop_multifd_compression, \
MultiFDCompression)
+#define DEFINE_PROP_MIG_MODE(_n, _s, _f, _d) \
+ DEFINE_PROP_SIGNED(_n, _s, _f, _d, qdev_prop_mig_mode, \
+ MigMode)
#define DEFINE_PROP_LOSTTICKPOLICY(_n, _s, _f, _d) \
DEFINE_PROP_SIGNED(_n, _s, _f, _d, qdev_prop_losttickpolicy, \
LostTickPolicy)
diff --git a/include/migration/misc.h b/include/migration/misc.h
index 673ac490fb36bcf4d3e3f1446703c817dd982c5a..1bc8902e6d2203f5199136e3073c60504cd43dad 100644
--- a/include/migration/misc.h
+++ b/include/migration/misc.h
@@ -15,6 +15,7 @@
#define MIGRATION_MISC_H
#include "qemu/notify.h"
+#include "qapi/qapi-types-migration.h"
#include "qapi/qapi-types-net.h"
/* migration/ram.c */
diff --git a/migration/migration-hmp-cmds.c b/migration/migration-hmp-cmds.c
index dfe98da355c3dc858d23b7a17ec0690ff770ae3d..a170440991b3383b2139e2e3895056ad8751ed82 100644
--- a/migration/migration-hmp-cmds.c
+++ b/migration/migration-hmp-cmds.c
@@ -387,6 +387,11 @@ void hmp_info_migrate_parameters(Monitor *mon, const QDict *qdict)
monitor_printf(mon, "%s: %" PRIu64 " MB/s\n",
MigrationParameter_str(MIGRATION_PARAMETER_VCPU_DIRTY_LIMIT),
params->vcpu_dirty_limit);
+
+ assert(params->has_mode);
+ monitor_printf(mon, "%s: %s\n",
+ MigrationParameter_str(MIGRATION_PARAMETER_MODE),
+ qapi_enum_lookup(&MigMode_lookup, params->mode));
}
qapi_free_MigrationParameters(params);
@@ -661,6 +666,10 @@ void hmp_migrate_set_parameter(Monitor *mon, const QDict *qdict)
p->has_vcpu_dirty_limit = true;
visit_type_size(v, param, &p->vcpu_dirty_limit, &err);
break;
+ case MIGRATION_PARAMETER_MODE:
+ p->has_mode = true;
+ visit_type_MigMode(v, param, &p->mode, &err);
+ break;
default:
assert(0);
}
diff --git a/migration/options.c b/migration/options.c
index 9a39826ca5bff33cf7224924625aad1afa1a9f81..8d8ec73ad95bd1dc7db9cc9881099524085544ae 100644
--- a/migration/options.c
+++ b/migration/options.c
@@ -176,6 +176,9 @@ Property migration_properties[] = {
DEFINE_PROP_UINT64("vcpu-dirty-limit", MigrationState,
parameters.vcpu_dirty_limit,
DEFAULT_MIGRATE_VCPU_DIRTY_LIMIT),
+ DEFINE_PROP_MIG_MODE("mode", MigrationState,
+ parameters.mode,
+ MIG_MODE_NORMAL),
/* Migration capabilities */
DEFINE_PROP_MIG_CAP("x-xbzrle", MIGRATION_CAPABILITY_XBZRLE),
@@ -827,6 +830,13 @@ uint64_t migrate_max_postcopy_bandwidth(void)
return s->parameters.max_postcopy_bandwidth;
}
+MigMode migrate_mode(void)
+{
+ MigrationState *s = migrate_get_current();
+
+ return s->parameters.mode;
+}
+
int migrate_multifd_channels(void)
{
MigrationState *s = migrate_get_current();
@@ -999,6 +1009,8 @@ MigrationParameters *qmp_query_migrate_parameters(Error **errp)
params->x_vcpu_dirty_limit_period = s->parameters.x_vcpu_dirty_limit_period;
params->has_vcpu_dirty_limit = true;
params->vcpu_dirty_limit = s->parameters.vcpu_dirty_limit;
+ params->has_mode = true;
+ params->mode = s->parameters.mode;
return params;
}
@@ -1034,6 +1046,7 @@ void migrate_params_init(MigrationParameters *params)
params->has_announce_step = true;
params->has_x_vcpu_dirty_limit_period = true;
params->has_vcpu_dirty_limit = true;
+ params->has_mode = true;
}
/*
@@ -1331,6 +1344,10 @@ static void migrate_params_test_apply(MigrateSetParameters *params,
if (params->has_vcpu_dirty_limit) {
dest->vcpu_dirty_limit = params->vcpu_dirty_limit;
}
+
+ if (params->has_mode) {
+ dest->mode = params->mode;
+ }
}
static void migrate_params_apply(MigrateSetParameters *params, Error **errp)
@@ -1471,6 +1488,10 @@ static void migrate_params_apply(MigrateSetParameters *params, Error **errp)
if (params->has_vcpu_dirty_limit) {
s->parameters.vcpu_dirty_limit = params->vcpu_dirty_limit;
}
+
+ if (params->has_mode) {
+ s->parameters.mode = params->mode;
+ }
}
void qmp_migrate_set_parameters(MigrateSetParameters *params, Error **errp)
diff --git a/migration/options.h b/migration/options.h
index 237f2d6b4af24a56e8cbd41e5182d730a7c085a2..246c160aeeea4c75f104e66a2008004d0ffd7693 100644
--- a/migration/options.h
+++ b/migration/options.h
@@ -83,6 +83,7 @@ uint8_t migrate_max_cpu_throttle(void);
uint64_t migrate_max_bandwidth(void);
uint64_t migrate_avail_switchover_bandwidth(void);
uint64_t migrate_max_postcopy_bandwidth(void);
+MigMode migrate_mode(void);
int migrate_multifd_channels(void);
MultiFDCompression migrate_multifd_compression(void);
int migrate_multifd_zlib_level(void);
diff --git a/qapi/migration.json b/qapi/migration.json
index e6610af42884bbe35e1ff3e0814bab9b34b1ce7d..47c02a934638d2096927c4f06e6bd32605c3765b 100644
--- a/qapi/migration.json
+++ b/qapi/migration.json
@@ -631,6 +631,15 @@
'data': [ 'none', 'zlib',
{ 'name': 'zstd', 'if': 'CONFIG_ZSTD' } ] }
+##
+# @MigMode:
+#
+# @normal: the original form of migration. (since 8.2)
+#
+##
+{ 'enum': 'MigMode',
+ 'data': [ 'normal' ] }
+
##
# @BitmapMigrationBitmapAliasTransform:
#
@@ -849,6 +858,9 @@
# @vcpu-dirty-limit: Dirtyrate limit (MB/s) during live migration.
# Defaults to 1. (Since 8.1)
#
+# @mode: Migration mode. See description in @MigMode. Default is 'normal'.
+# (Since 8.2)
+#
# Features:
#
# @deprecated: Member @block-incremental is deprecated. Use
@@ -881,7 +893,8 @@
'multifd-zlib-level', 'multifd-zstd-level',
'block-bitmap-mapping',
{ 'name': 'x-vcpu-dirty-limit-period', 'features': ['unstable'] },
- 'vcpu-dirty-limit'] }
+ 'vcpu-dirty-limit',
+ 'mode'] }
##
# @MigrateSetParameters:
@@ -1033,6 +1046,9 @@
# @vcpu-dirty-limit: Dirtyrate limit (MB/s) during live migration.
# Defaults to 1. (Since 8.1)
#
+# @mode: Migration mode. See description in @MigMode. Default is 'normal'.
+# (Since 8.2)
+#
# Features:
#
# @deprecated: Member @block-incremental is deprecated. Use
@@ -1085,7 +1101,8 @@
'*block-bitmap-mapping': [ 'BitmapMigrationNodeAlias' ],
'*x-vcpu-dirty-limit-period': { 'type': 'uint64',
'features': [ 'unstable' ] },
- '*vcpu-dirty-limit': 'uint64'} }
+ '*vcpu-dirty-limit': 'uint64',
+ '*mode': 'MigMode'} }
##
# @migrate-set-parameters:
@@ -1257,6 +1274,9 @@
# @vcpu-dirty-limit: Dirtyrate limit (MB/s) during live migration.
# Defaults to 1. (Since 8.1)
#
+# @mode: Migration mode. See description in @MigMode. Default is 'normal'.
+# (Since 8.2)
+#
# Features:
#
# @deprecated: Member @block-incremental is deprecated. Use
@@ -1306,7 +1326,8 @@
'*block-bitmap-mapping': [ 'BitmapMigrationNodeAlias' ],
'*x-vcpu-dirty-limit-period': { 'type': 'uint64',
'features': [ 'unstable' ] },
- '*vcpu-dirty-limit': 'uint64'} }
+ '*vcpu-dirty-limit': 'uint64',
+ '*mode': 'MigMode'} }
##
# @query-migrate-parameters: