[Qemu-devel] [PATCH COLO-Frame v10 10/38] COLO: Add a new RunState RUN_STATE_COLO

[zhanghailiang]

Guest will enter this state when paused to save/restore VM state
under colo checkpoint.

Cc: Eric Blake <address@hidden>
Cc: Markus Armbruster <address@hidden>
Signed-off-by: zhanghailiang <address@hidden>
Signed-off-by: Li Zhijian <address@hidden>
Signed-off-by: Gonglei <address@hidden>
Reviewed-by: Dr. David Alan Gilbert <address@hidden>
Reviewed-by: Eric Blake <address@hidden>
---
 qapi-schema.json | 7 ++++++-
 vl.c             | 8 ++++++++
 2 files changed, 14 insertions(+), 1 deletion(-)

diff --git a/qapi-schema.json b/qapi-schema.json
index 5c4fe6d..49f2a90 100644
--- a/qapi-schema.json
+++ b/qapi-schema.json
@@ -154,12 +154,15 @@
 # @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 (since
+# 2.5)
 ##
 { 'enum': 'RunState',
   'data': [ 'debug', 'inmigrate', 'internal-error', 'io-error', 'paused',
             'postmigrate', 'prelaunch', 'finish-migrate', 'restore-vm',
             'running', 'save-vm', 'shutdown', 'suspended', 'watchdog',
-            'guest-panicked' ] }
+            'guest-panicked', 'colo' ] }
 
 ##
 # @StatusInfo:
@@ -434,6 +437,8 @@
 #
 # @failed: some error occurred during migration process.
 #
+# @colo: VM is in the process of fault tolerance. (since 2.5)
+#
 # Since: 2.3
 #
 ##
diff --git a/vl.c b/vl.c
index 10e6cbe..c459a3e 100644
--- a/vl.c
+++ b/vl.c
@@ -586,6 +586,7 @@ static const RunStateTransition runstate_transitions_def[] 
= {
     { RUN_STATE_INMIGRATE, RUN_STATE_WATCHDOG },
     { RUN_STATE_INMIGRATE, RUN_STATE_GUEST_PANICKED },
     { RUN_STATE_INMIGRATE, RUN_STATE_FINISH_MIGRATE },
+    { RUN_STATE_INMIGRATE, RUN_STATE_COLO },
 
     { RUN_STATE_INTERNAL_ERROR, RUN_STATE_PAUSED },
     { RUN_STATE_INTERNAL_ERROR, RUN_STATE_FINISH_MIGRATE },
@@ -595,6 +596,7 @@ static const RunStateTransition runstate_transitions_def[] 
= {
 
     { RUN_STATE_PAUSED, RUN_STATE_RUNNING },
     { RUN_STATE_PAUSED, RUN_STATE_FINISH_MIGRATE },
+    { RUN_STATE_PAUSED, RUN_STATE_COLO},
 
     { RUN_STATE_POSTMIGRATE, RUN_STATE_RUNNING },
     { RUN_STATE_POSTMIGRATE, RUN_STATE_FINISH_MIGRATE },
@@ -605,9 +607,12 @@ static const RunStateTransition runstate_transitions_def[] 
= {
 
     { RUN_STATE_FINISH_MIGRATE, RUN_STATE_RUNNING },
     { RUN_STATE_FINISH_MIGRATE, RUN_STATE_POSTMIGRATE },
+    { RUN_STATE_FINISH_MIGRATE, RUN_STATE_COLO},
 
     { RUN_STATE_RESTORE_VM, RUN_STATE_RUNNING },
 
+    { RUN_STATE_COLO, RUN_STATE_RUNNING },
+
     { RUN_STATE_RUNNING, RUN_STATE_DEBUG },
     { RUN_STATE_RUNNING, RUN_STATE_INTERNAL_ERROR },
     { RUN_STATE_RUNNING, RUN_STATE_IO_ERROR },
@@ -618,6 +623,7 @@ static const RunStateTransition runstate_transitions_def[] 
= {
     { RUN_STATE_RUNNING, RUN_STATE_SHUTDOWN },
     { RUN_STATE_RUNNING, RUN_STATE_WATCHDOG },
     { RUN_STATE_RUNNING, RUN_STATE_GUEST_PANICKED },
+    { RUN_STATE_RUNNING, RUN_STATE_COLO},
 
     { RUN_STATE_SAVE_VM, RUN_STATE_RUNNING },
 
@@ -628,9 +634,11 @@ static const RunStateTransition runstate_transitions_def[] 
= {
     { RUN_STATE_RUNNING, RUN_STATE_SUSPENDED },
     { RUN_STATE_SUSPENDED, RUN_STATE_RUNNING },
     { RUN_STATE_SUSPENDED, RUN_STATE_FINISH_MIGRATE },
+    { RUN_STATE_SUSPENDED, RUN_STATE_COLO},
 
     { RUN_STATE_WATCHDOG, RUN_STATE_RUNNING },
     { RUN_STATE_WATCHDOG, RUN_STATE_FINISH_MIGRATE },
+    { RUN_STATE_WATCHDOG, RUN_STATE_COLO},
 
     { RUN_STATE_GUEST_PANICKED, RUN_STATE_RUNNING },
     { RUN_STATE_GUEST_PANICKED, RUN_STATE_FINISH_MIGRATE },
-- 
1.8.3.1