qapi: Remove deprecated 'singlestep' member of StatusInfo

This member has been deprecated before the 8.1 release, in commit
34c18203d4 ("qmp: Deprecate 'singlestep' member of StatusInfo").
Time to drop it.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Message-ID: <20240117151430.29235-2-philmd@linaro.org>
Signed-off-by: Thomas Huth <thuth@redhat.com>

docs/about/deprecated.rst

@@ -151,20 +151,6 @@ accepted incorrect commands will return an error. Users should make sure that
 all arguments passed to ``device_add`` are consistent with the documented
 property types.
 
-``StatusInfo`` member ``singlestep`` (since 8.1)
-''''''''''''''''''''''''''''''''''''''''''''''''
-
-The ``singlestep`` member of the ``StatusInfo`` returned from the
-``query-status`` command is deprecated. This member has a confusing
-name and it never did what the documentation claimed or what its name
-suggests. We do not believe that anybody is actually using the
-information provided in this member.
-
-The information it reports is whether the TCG JIT is in "one
-instruction per translated block" mode (which can be set on the
-command line or via the HMP, but not via QMP). The information remains
-available via the HMP 'info jit' command.
-
 QEMU Machine Protocol (QMP) events
 ----------------------------------
 

qapi/run-state.json

@@ -106,25 +106,15 @@
 #
 # @running: true if all VCPUs are runnable, false if not runnable
 #
-# @singlestep: true if using TCG with one guest instruction per
-#     translation block
-#
 # @status: the virtual machine @RunState
 #
 # Features:
 #
-# @deprecated: Member 'singlestep' is deprecated (with no
-#     replacement).
-#
 # Since: 0.14
 #
-# Notes: @singlestep is enabled on the command line with '-accel
-#     tcg,one-insn-per-tb=on', or with the HMP 'one-insn-per-tb'
-#     command.
 ##
 { 'struct': 'StatusInfo',
   'data': {'running': 'bool',
-           'singlestep': { 'type': 'bool', 'features': [ 'deprecated' ]},
            'status': 'RunState'} }
 
 ##
@@ -140,7 +130,6 @@
 #
 # -> { "execute": "query-status" }
 # <- { "return": { "running": true,
-#                  "singlestep": false,
 #                  "status": "running" } }
 ##
 { 'command': 'query-status', 'returns': 'StatusInfo',

system/runstate.c

@@ -242,15 +242,7 @@ bool runstate_needs_reset(void)
 StatusInfo *qmp_query_status(Error **errp)
 {
     StatusInfo *info = g_malloc0(sizeof(*info));
-    AccelState *accel = current_accel();
 
-    /*
-     * We ignore errors, which will happen if the accelerator
-     * is not TCG. "singlestep" is meaningless for other accelerators,
-     * so we will set the StatusInfo field to false for those.
-     */
-    info->singlestep = object_property_get_bool(OBJECT(accel),
-                                                "one-insn-per-tb", NULL);
     info->running = runstate_is_running();
     info->status = current_run_state;
 

tests/qemu-iotests/183.out

@@ -30,13 +30,13 @@ read 65536/65536 bytes at offset 0
        'arguments': { 'uri': 'unix:SOCK_DIR/migrate', 'blk': true } }
 {"return": {}}
 { 'execute': 'query-status' }
-{"return": {"status": "postmigrate", "singlestep": false, "running": false}}
+{"return": {"status": "postmigrate", "running": false}}
 
 === Do some I/O on the destination ===
 
 { 'execute': 'query-status' }
 {"timestamp": {"seconds":  TIMESTAMP, "microseconds":  TIMESTAMP}, "event": "RESUME"}
-{"return": {"status": "running", "singlestep": false, "running": true}}
+{"return": {"status": "running", "running": true}}
 { 'execute': 'human-monitor-command',
        'arguments': { 'command-line':
                       'qemu-io disk "read -P 0x55 0 64k"' } }

tests/qemu-iotests/234.out

@@ -15,8 +15,8 @@ Starting migration to B...
 {"data": {"status": "completed"}, "event": "MIGRATION", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
 completed
 completed
-{"return": {"running": false, "singlestep": false, "status": "postmigrate"}}
+{"return": {"running": false, "status": "postmigrate"}}
-{"return": {"running": true, "singlestep": false, "status": "running"}}
+{"return": {"running": true, "status": "running"}}
 Add a second parent to drive0-file...
 {"return": {}}
 Restart A with -incoming and second parent...
@@ -32,5 +32,5 @@ Starting migration back to A...
 {"data": {"status": "completed"}, "event": "MIGRATION", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
 completed
 completed
-{"return": {"running": true, "singlestep": false, "status": "running"}}
+{"return": {"running": true, "status": "running"}}
-{"return": {"running": false, "singlestep": false, "status": "postmigrate"}}
+{"return": {"running": false, "status": "postmigrate"}}

tests/qemu-iotests/262.out

@@ -13,5 +13,5 @@ Starting migration to B...
 {"data": {"status": "completed"}, "event": "MIGRATION", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
 completed
 completed
-{"return": {"running": false, "singlestep": false, "status": "postmigrate"}}
+{"return": {"running": false, "status": "postmigrate"}}
-{"return": {"running": true, "singlestep": false, "status": "running"}}
+{"return": {"running": true, "status": "running"}}

tests/qemu-iotests/280.out

@@ -12,7 +12,7 @@ Enabling migration QMP events on VM...
 VM is now stopped:
 completed
 {"execute": "query-status", "arguments": {}}
-{"return": {"running": false, "singlestep": false, "status": "postmigrate"}}
+{"return": {"running": false, "status": "postmigrate"}}
 
 === Create a snapshot of the disk image ===
 {"execute": "blockdev-create", "arguments": {"job-id": "job0", "options": {"driver": "file", "filename": "TEST_DIR/PID-top", "size": 0}}}