migration: fix multifd_send_pages() next channel

[qemu.git] / qapi / run-state.json

# -*- Mode: Python -*-
#

##
# = VM run state
##

##
# @RunState:
#
# An enumeration of VM run states.
#
# @debug: QEMU is running on a debugger
#
# @finish-migrate: guest is paused to finish the migration process
#
# @inmigrate: guest is paused waiting for an incoming migration.  Note
#             that this state does not tell whether the machine will start at the
#             end of the migration.  This depends on the command-line -S option and
#             any invocation of 'stop' or 'cont' that has happened since QEMU was
#             started.
#
# @internal-error: An internal error that prevents further guest execution
#                  has occurred
#
# @io-error: the last IOP has failed and the device is configured to pause
#            on I/O errors
#
# @paused: guest has been paused via the 'stop' command
#
# @postmigrate: guest is paused following a successful 'migrate'
#
# @prelaunch: QEMU was started with -S and guest has not started
#
# @restore-vm: guest is paused to restore VM state
#
# @running: guest is actively running
#
# @save-vm: guest is paused to save the VM state
#
# @shutdown: guest is shut down (and -no-shutdown is in use)
#
# @suspended: guest is suspended (ACPI S3)
#
# @watchdog: the watchdog action is configured to pause and has been triggered
#
# @guest-panicked: guest has been panicked as a result of guest OS panic
#
# @colo: guest is paused to save/restore VM state under colo checkpoint,
#        VM can not get into this state unless colo capability is enabled
#        for migration. (since 2.8)
# @preconfig: QEMU is paused before board specific init callback is executed.
#             The state is reachable only if the --preconfig CLI option is used.
#             (Since 3.0)
##
{ 'enum': 'RunState',
  'data': [ 'debug', 'inmigrate', 'internal-error', 'io-error', 'paused',
            'postmigrate', 'prelaunch', 'finish-migrate', 'restore-vm',
            'running', 'save-vm', 'shutdown', 'suspended', 'watchdog',
            'guest-panicked', 'colo', 'preconfig' ] }

##
# @ShutdownCause:
#
# An enumeration of reasons for a Shutdown.
#
# @none: No shutdown request pending
#
# @host-error: An error prevents further use of guest
#
# @host-qmp-quit: Reaction to the QMP command 'quit'
#
# @host-qmp-system-reset: Reaction to the QMP command 'system_reset'
#
# @host-signal: Reaction to a signal, such as SIGINT
#
# @host-ui: Reaction to a UI event, like window close
#
# @guest-shutdown: Guest shutdown/suspend request, via ACPI or other
#                  hardware-specific means
#
# @guest-reset: Guest reset request, and command line turns that into
#               a shutdown
#
# @guest-panic: Guest panicked, and command line turns that into a shutdown
#
# @subsystem-reset: Partial guest reset that does not trigger QMP events and
#                   ignores --no-reboot. This is useful for sanitizing
#                   hypercalls on s390 that are used during kexec/kdump/boot
#
##
{ 'enum': 'ShutdownCause',
  # Beware, shutdown_caused_by_guest() depends on enumeration order
  'data': [ 'none', 'host-error', 'host-qmp-quit', 'host-qmp-system-reset',
            'host-signal', 'host-ui', 'guest-shutdown', 'guest-reset',
            'guest-panic', 'subsystem-reset'] }

##
# @StatusInfo:
#
# Information about VCPU run state
#
# @running: true if all VCPUs are runnable, false if not runnable
#
# @singlestep: true if VCPUs are in single-step mode
#
# @status: the virtual machine @RunState
#
# Since:  0.14.0
#
# Notes: @singlestep is enabled through the GDB stub
##
{ 'struct': 'StatusInfo',
  'data': {'running': 'bool', 'singlestep': 'bool', 'status': 'RunState'} }

##
# @query-status:
#
# Query the run status of all VCPUs
#
# Returns: @StatusInfo reflecting all VCPUs
#
# Since:  0.14.0
#
# Example:
#
# -> { "execute": "query-status" }
# <- { "return": { "running": true,
#                  "singlestep": false,
#                  "status": "running" } }
#
##
{ 'command': 'query-status', 'returns': 'StatusInfo',
  'allow-preconfig': true }

##
# @SHUTDOWN:
#
# Emitted when the virtual machine has shut down, indicating that qemu is
# about to exit.
#
# @guest: If true, the shutdown was triggered by a guest request (such as
#         a guest-initiated ACPI shutdown request or other hardware-specific action)
#         rather than a host request (such as sending qemu a SIGINT). (since 2.10)
#
# @reason: The @ShutdownCause which resulted in the SHUTDOWN. (since 4.0)
#
# Note: If the command-line option "-no-shutdown" has been specified, qemu will
#       not exit, and a STOP event will eventually follow the SHUTDOWN event
#
# Since: 0.12.0
#
# Example:
#
# <- { "event": "SHUTDOWN", "data": { "guest": true },
#      "timestamp": { "seconds": 1267040730, "microseconds": 682951 } }
#
##
{ 'event': 'SHUTDOWN', 'data': { 'guest': 'bool', 'reason': 'ShutdownCause' } }

##
# @POWERDOWN:
#
# Emitted when the virtual machine is powered down through the power control
# system, such as via ACPI.
#
# Since: 0.12.0
#
# Example:
#
# <- { "event": "POWERDOWN",
#      "timestamp": { "seconds": 1267040730, "microseconds": 682951 } }
#
##
{ 'event': 'POWERDOWN' }

##
# @RESET:
#
# Emitted when the virtual machine is reset
#
# @guest: If true, the reset was triggered by a guest request (such as
#         a guest-initiated ACPI reboot request or other hardware-specific action)
#         rather than a host request (such as the QMP command system_reset).
#         (since 2.10)
#
# @reason: The @ShutdownCause of the RESET. (since 4.0)
#
# Since: 0.12.0
#
# Example:
#
# <- { "event": "RESET", "data": { "guest": false },
#      "timestamp": { "seconds": 1267041653, "microseconds": 9518 } }
#
##
{ 'event': 'RESET', 'data': { 'guest': 'bool', 'reason': 'ShutdownCause' } }

##
# @STOP:
#
# Emitted when the virtual machine is stopped
#
# Since: 0.12.0
#
# Example:
#
# <- { "event": "STOP",
#      "timestamp": { "seconds": 1267041730, "microseconds": 281295 } }
#
##
{ 'event': 'STOP' }

##
# @RESUME:
#
# Emitted when the virtual machine resumes execution
#
# Since: 0.12.0
#
# Example:
#
# <- { "event": "RESUME",
#      "timestamp": { "seconds": 1271770767, "microseconds": 582542 } }
#
##
{ 'event': 'RESUME' }

##
# @SUSPEND:
#
# Emitted when guest enters a hardware suspension state, for example, S3 state,
# which is sometimes called standby state
#
# Since: 1.1
#
# Example:
#
# <- { "event": "SUSPEND",
#      "timestamp": { "seconds": 1344456160, "microseconds": 309119 } }
#
##
{ 'event': 'SUSPEND' }

##
# @SUSPEND_DISK:
#
# Emitted when guest enters a hardware suspension state with data saved on
# disk, for example, S4 state, which is sometimes called hibernate state
#
# Note: QEMU shuts down (similar to event @SHUTDOWN) when entering this state
#
# Since: 1.2
#
# Example:
#
# <-   { "event": "SUSPEND_DISK",
#        "timestamp": { "seconds": 1344456160, "microseconds": 309119 } }
#
##
{ 'event': 'SUSPEND_DISK' }

##
# @WAKEUP:
#
# Emitted when the guest has woken up from suspend state and is running
#
# Since: 1.1
#
# Example:
#
# <- { "event": "WAKEUP",
#      "timestamp": { "seconds": 1344522075, "microseconds": 745528 } }
#
##
{ 'event': 'WAKEUP' }

##
# @WATCHDOG:
#
# Emitted when the watchdog device's timer is expired
#
# @action: action that has been taken
#
# Note: If action is "reset", "shutdown", or "pause" the WATCHDOG event is
#       followed respectively by the RESET, SHUTDOWN, or STOP events
#
# Note: This event is rate-limited.
#
# Since: 0.13.0
#
# Example:
#
# <- { "event": "WATCHDOG",
#      "data": { "action": "reset" },
#      "timestamp": { "seconds": 1267061043, "microseconds": 959568 } }
#
##
{ 'event': 'WATCHDOG',
  'data': { 'action': 'WatchdogAction' } }

##
# @WatchdogAction:
#
# An enumeration of the actions taken when the watchdog device's timer is
# expired
#
# @reset: system resets
#
# @shutdown: system shutdown, note that it is similar to @powerdown, which
#            tries to set to system status and notify guest
#
# @poweroff: system poweroff, the emulator program exits
#
# @pause: system pauses, similar to @stop
#
# @debug: system enters debug state
#
# @none: nothing is done
#
# @inject-nmi: a non-maskable interrupt is injected into the first VCPU (all
#              VCPUS on x86) (since 2.4)
#
# Since: 2.1
##
{ 'enum': 'WatchdogAction',
  'data': [ 'reset', 'shutdown', 'poweroff', 'pause', 'debug', 'none',
            'inject-nmi' ] }

##
# @watchdog-set-action:
#
# Set watchdog action
#
# Since: 2.11
##
{ 'command': 'watchdog-set-action', 'data' : {'action': 'WatchdogAction'} }

##
# @GUEST_PANICKED:
#
# Emitted when guest OS panic is detected
#
# @action: action that has been taken, currently always "pause"
#
# @info: information about a panic (since 2.9)
#
# Since: 1.5
#
# Example:
#
# <- { "event": "GUEST_PANICKED",
#      "data": { "action": "pause" } }
#
##
{ 'event': 'GUEST_PANICKED',
  'data': { 'action': 'GuestPanicAction', '*info': 'GuestPanicInformation' } }

##
# @GUEST_CRASHLOADED:
#
# Emitted when guest OS crash loaded is detected
#
# @action: action that has been taken, currently always "run"
#
# @info: information about a panic
#
# Since: 5.0
#
# Example:
#
# <- { "event": "GUEST_CRASHLOADED",
#      "data": { "action": "run" } }
#
##
{ 'event': 'GUEST_CRASHLOADED',
  'data': { 'action': 'GuestPanicAction', '*info': 'GuestPanicInformation' } }

##
# @GuestPanicAction:
#
# An enumeration of the actions taken when guest OS panic is detected
#
# @pause: system pauses
#
# Since: 2.1 (poweroff since 2.8, run since 5.0)
##
{ 'enum': 'GuestPanicAction',
  'data': [ 'pause', 'poweroff', 'run' ] }

##
# @GuestPanicInformationType:
#
# An enumeration of the guest panic information types
#
# @hyper-v: hyper-v guest panic information type
#
# @s390: s390 guest panic information type (Since: 2.12)
#
# Since: 2.9
##
{ 'enum': 'GuestPanicInformationType',
  'data': [ 'hyper-v', 's390' ] }

##
# @GuestPanicInformation:
#
# Information about a guest panic
#
# @type: Crash type that defines the hypervisor specific information
#
# Since: 2.9
##
{'union': 'GuestPanicInformation',
 'base': {'type': 'GuestPanicInformationType'},
 'discriminator': 'type',
 'data': { 'hyper-v': 'GuestPanicInformationHyperV',
           's390': 'GuestPanicInformationS390' } }

##
# @GuestPanicInformationHyperV:
#
# Hyper-V specific guest panic information (HV crash MSRs)
#
# Since: 2.9
##
{'struct': 'GuestPanicInformationHyperV',
 'data': { 'arg1': 'uint64',
           'arg2': 'uint64',
           'arg3': 'uint64',
           'arg4': 'uint64',
           'arg5': 'uint64' } }

##
# @S390CrashReason:
#
# Reason why the CPU is in a crashed state.
#
# @unknown: no crash reason was set
#
# @disabled-wait: the CPU has entered a disabled wait state
#
# @extint-loop: clock comparator or cpu timer interrupt with new PSW enabled
#               for external interrupts
#
# @pgmint-loop: program interrupt with BAD new PSW
#
# @opint-loop: operation exception interrupt with invalid code at the program
#              interrupt new PSW
#
# Since: 2.12
##
{ 'enum': 'S390CrashReason',
  'data': [ 'unknown',
            'disabled-wait',
            'extint-loop',
            'pgmint-loop',
            'opint-loop' ] }

##
# @GuestPanicInformationS390:
#
# S390 specific guest panic information (PSW)
#
# @core: core id of the CPU that crashed
# @psw-mask: control fields of guest PSW
# @psw-addr: guest instruction address
# @reason: guest crash reason
#
# Since: 2.12
##
{'struct': 'GuestPanicInformationS390',
 'data': { 'core': 'uint32',
           'psw-mask': 'uint64',
           'psw-addr': 'uint64',
           'reason': 'S390CrashReason' } }