Merge remote-tracking branch 'remotes/armbru/tags/pull-misc-2021-07-27' into staging

Miscellaneous patches for 2021-07-27

# gpg: Signature made Tue 27 Jul 2021 16:19:35 BST
# gpg:                using RSA key 354BC8B3D7EB2A6B68674E5F3870B400EB918653
# gpg:                issuer "armbru@redhat.com"
# gpg: Good signature from "Markus Armbruster <armbru@redhat.com>" [full]
# gpg:                 aka "Markus Armbruster <armbru@pond.sub.org>" [full]
# Primary key fingerprint: 354B C8B3 D7EB 2A6B 6867  4E5F 3870 B400 EB91 8653

* remotes/armbru/tags/pull-misc-2021-07-27:
  vl: Don't continue after -smp help.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

softmmu/vl.c

@@ -1545,7 +1545,7 @@ machine_parse_property_opt(QemuOptsList *opts_list, const char *propname,
     prop = keyval_parse(arg, opts_list->implied_opt_name, &help, errp);
     if (help) {
         qemu_opts_print_help(opts_list, true);
-        return;
+        exit(0);
     }
     opts = qdict_new();
     qdict_put(opts, propname, prop);