Deprecate the "-no-acpi" command line switch

Similar to "-no-hpet", the "-no-acpi" switch is a legacy command
line option that should be replaced with the "acpi" machine parameter
nowadays.

Message-Id: <20230224090543.1129677-1-thuth@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Sunil V L <sunilvl@ventanamicro.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>

docs/about/deprecated.rst

@@ -99,6 +99,12 @@ form is preferred.
 The HPET setting has been turned into a machine property.
 Use ``-machine hpet=off`` instead.
 
+``-no-acpi`` (since 8.0)
+''''''''''''''''''''''''
+
+The ``-no-acpi`` setting has been turned into a machine property.
+Use ``-machine acpi=off`` instead.
+
 ``-accel hax`` (since 8.0)
 ''''''''''''''''''''''''''
 

softmmu/vl.c

@@ -3264,6 +3264,7 @@ void qemu_init(int argc, char **argv)
                 vnc_parse(optarg);
                 break;
             case QEMU_OPTION_no_acpi:
+                warn_report("-no-acpi is deprecated, use '-machine acpi=off' instead");
                 qdict_put_str(machine_opts_dict, "acpi", "off");
                 break;
             case QEMU_OPTION_no_hpet: