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pvpanic: Emit GUEST_PVSHUTDOWN QMP event on pvpanic shutdown signal

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Emit a QMP event on receiving a PVPANIC_SHUTDOWN event. Even though a typical
SHUTDOWN event will be sent, it will be indistinguishable from a shutdown
originating from other cases (e.g. KVM exit due to KVM_SYSTEM_EVENT_SHUTDOWN)
that also issue the guest-shutdown cause.
A management layer application can detect the new GUEST_PVSHUTDOWN event to
determine if the guest is using the pvpanic interface to request shutdowns.

Signed-off-by: Alejandro Jimenez <alejandro.j.jimenez@oracle.com>
Message-Id: <20240527-pvpanic-shutdown-v8-6-5a28ec02558b@t-8ch.de>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Alejandro Jimenez 2024-05-27 08:27:52 +02:00 committed by Michael S. Tsirkin
parent 6269086b01
commit 8db1f7be78
2 changed files with 15 additions and 0 deletions
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14
qapi/run-state.json
View File

@ -462,6 +462,20 @@
{ 'event': 'GUEST_CRASHLOADED', { 'event': 'GUEST_CRASHLOADED',
'data': { 'action': 'GuestPanicAction', '*info': 'GuestPanicInformation' } } 'data': { 'action': 'GuestPanicAction', '*info': 'GuestPanicInformation' } }
##
# @GUEST_PVSHUTDOWN:
#
# Emitted when guest submits a shutdown request via pvpanic interface
#
# Since: 9.1
#
# Example:
#
# <- { "event": "GUEST_PVSHUTDOWN",
# "timestamp": { "seconds": 1648245259, "microseconds": 893771 } }
##
{ 'event': 'GUEST_PVSHUTDOWN' }
## ##
# @GuestPanicAction: # @GuestPanicAction:
# #

1
system/runstate.c
View File

@ -586,6 +586,7 @@ void qemu_system_guest_crashloaded(GuestPanicInformation *info)
void qemu_system_guest_pvshutdown(void) void qemu_system_guest_pvshutdown(void)
{ {
qapi_event_send_guest_pvshutdown();
qemu_system_shutdown_request(SHUTDOWN_CAUSE_GUEST_SHUTDOWN); qemu_system_shutdown_request(SHUTDOWN_CAUSE_GUEST_SHUTDOWN);
} }