diff options
| -rw-r--r-- | hw/core/qdev-properties-system.c | 2 | ||||
| -rw-r--r-- | qapi/migration.json | 15 |
2 files changed, 15 insertions, 2 deletions
diff --git a/hw/core/qdev-properties-system.c b/hw/core/qdev-properties-system.c index b9179e8917..2f1dbb3fd7 100644 --- a/hw/core/qdev-properties-system.c +++ b/hw/core/qdev-properties-system.c @@ -680,7 +680,7 @@ QEMU_BUILD_BUG_ON(sizeof(MigMode) != sizeof(int)); const PropertyInfo qdev_prop_mig_mode = { .name = "MigMode", .description = "mig_mode values, " - "normal", + "normal,cpr-reboot", .enum_table = &MigMode_lookup, .get = qdev_propinfo_get_enum, .set = qdev_propinfo_set_enum, diff --git a/qapi/migration.json b/qapi/migration.json index 47c02a9346..3daeffc95d 100644 --- a/qapi/migration.json +++ b/qapi/migration.json @@ -636,9 +636,22 @@ # # @normal: the original form of migration. (since 8.2) # +# @cpr-reboot: The migrate command saves state to a file, allowing one to +# quit qemu, reboot to an updated kernel, and restart an updated +# version of qemu. The caller must specify a migration URI +# that writes to and reads from a file. Unlike normal mode, +# the use of certain local storage options does not block the +# migration, but the caller must not modify guest block devices +# between the quit and restart. To avoid saving guest RAM to the +# file, the memory backend must be shared, and the @x-ignore-shared +# migration capability must be set. Guest RAM must be non-volatile +# across reboot, such as by backing it with a dax device, but this +# is not enforced. The restarted qemu arguments must match those +# used to initially start qemu, plus the -incoming option. +# (since 8.2) ## { 'enum': 'MigMode', - 'data': [ 'normal' ] } + 'data': [ 'normal', 'cpr-reboot' ] } ## # @BitmapMigrationBitmapAliasTransform: |