Michal Novotny <minov...@redhat.com> writes:

> Output error message when user provides the invalid machine type
> on the command line. This also saves time to find what issue is
> when you upgrade from one version of qemu to another version that
> doesn't support required machine type any longer.

Text from here

>
> The patch is checked using ./scripts/checkpatch.pl script and
> also is_help_option() function is being used.
>
> Michal

to here belongs below the '---' line, so it's ommitted from the commit
message.

>
> Signed-off-by: Michal Novotny <minov...@redhat.com>
> ---
>  vl.c | 5 +++++
>  1 file changed, 5 insertions(+)
>
> diff --git a/vl.c b/vl.c
> index 25b8f2f..563ae67 100644
> --- a/vl.c
> +++ b/vl.c
> @@ -2671,6 +2671,11 @@ static QEMUMachine *machine_parse(const char *name)
>      if (machine) {
>          return machine;
>      }
> +
> +    if (name && !is_help_option(name)) {
> +        printf("Error: Unsupported machine type '%s'\n", name);
> +    }
> +
>      printf("Supported machines are:\n");
>      for (m = first_machine; m != NULL; m = m->next) {
>          if (m->alias) {

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