Re: [PATCH] vl: Parse legacy default_machine_opts

[Anthony PERARD <anthony.perard@xxxxxxxxxx>]

On Mon, Jul 12, 2021 at 10:15:52PM -0400, Jason Andryuk wrote:
> qemu can't start a xen vm after commit d8fb7d0969d5
> "vl: switch -M parsing to keyval" with:
> 
> $ ./qemu-system-i386 -M xenfv
> Unexpected error in object_property_find_err() at ../qom/object.c:1298:
> qemu-system-i386: Property 'xenfv-3.1-machine.accel' not found
> Aborted (core dumped)
> 
> The default_machine_opts handling doesn't process the legacy machine
> options like "accel".  Call qemu_apply_legacy_machine_options to provide
> the legacy handling.
> 
> Signed-off-by: Jason Andryuk <jandryuk@xxxxxxxxx>

Reviewed-by: Anthony PERARD <anthony.perard@xxxxxxxxxx>

I can't find a different way to set a default "accelerator" to a
machine, so this patch seems necessary.

Thanks,

> ---
>  softmmu/vl.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/softmmu/vl.c b/softmmu/vl.c
> index 4df1496101..f4d8630fc6 100644
> --- a/softmmu/vl.c
> +++ b/softmmu/vl.c
> @@ -2126,6 +2126,7 @@ static void qemu_create_machine(QDict *qdict)
>          QDict *default_opts =
>              keyval_parse(machine_class->default_machine_opts, NULL, NULL,
>                           &error_abort);
> +        qemu_apply_legacy_machine_options(default_opts);
>          object_set_properties_from_keyval(OBJECT(current_machine), 
> default_opts,
>                                            false, &error_abort);
>          qobject_unref(default_opts);

-- 
Anthony PERARD