Re: [PATCH v6 1/1] util/async-teardown: wire up query-command-line-options

[Thomas Huth]

On 28/04/2023 13.12, Claudio Imbrenda wrote:
> Add new -run-with option with an async-teardown=on|off parameter. It is
> visible in the output of query-command-line-options QMP command, so it
> can be discovered and used by libvirt.
>
> The option -async-teardown is now redundant, deprecate it.
>
> Reported-by: Boris Fiuczynski <fiuczy@linux.ibm.com>
> Fixes: c891c24b1a ("os-posix: asynchronous teardown for shutdown on Linux")
> Signed-off-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
> ---
>   docs/about/deprecated.rst |  5 +++++
>   os-posix.c                | 15 +++++++++++++++
>   qemu-options.hx           | 34 +++++++++++++++++++++++-----------
>   util/async-teardown.c     | 21 +++++++++++++++++++++
>   4 files changed, 64 insertions(+), 11 deletions(-)
>
> diff --git a/docs/about/deprecated.rst b/docs/about/deprecated.rst
> index 1ca9dc33d6..0986db9a86 100644
> --- a/docs/about/deprecated.rst
> +++ b/docs/about/deprecated.rst
> @@ -111,6 +111,11 @@ Use ``-machine acpi=off`` instead.
>   The HAXM project has been retired (see https://github.com/intel/haxm#status).
>   Use "whpx" (on Windows) or "hvf" (on macOS) instead.
>   
> +``-async-teardown`` (since 8.1)
> +,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,
> +
> +Use ``-run-with async-teardown=on`` instead.
> +
>   
>   QEMU Machine Protocol (QMP) commands
>   ------------------------------------
> diff --git a/os-posix.c b/os-posix.c
> index 5adc69f560..117ad2bdc1 100644
> --- a/os-posix.c
> +++ b/os-posix.c
> @@ -36,6 +36,8 @@
>   #include "qemu/log.h"
>   #include "sysemu/runstate.h"
>   #include "qemu/cutils.h"
> +#include "qemu/config-file.h"
> +#include "qemu/option.h"
>   
>   #ifdef CONFIG_LINUX
>   #include <sys/prctl.h>
> @@ -132,6 +134,8 @@ static bool os_parse_runas_uid_gid(const char *optarg)
>    */
>   int os_parse_cmd_args(int index, const char *optarg)
>   {
> +    QemuOpts *opts;

Fails to compile on FreeBSD:

../src/os-posix.c:137:15: error: unused variable 'opts' 
[-Werror,-Wunused-variable]
    QemuOpts *opts;
              ^
1 error generated.

Apart from that, the patch looks fine to me.

 Thomas