Re: [Qemu-devel] [PATCH v2] Add chardev-send-break monitor command

["Dr. David Alan Gilbert" <dgilbert@redhat.com>]

* Marc-André Lureau (marcandre.lureau@gmail.com) wrote:
> On Tue, Jun 27, 2017 at 9:46 PM Eric Blake <eblake@redhat.com> wrote:
> 
> > On 06/11/2017 02:48 AM, Stefan Fritsch wrote:
> > > Sending a break on a serial console can be useful for debugging the
> > > guest. But not all chardev backends support sending breaks (only telnet
> > > and mux do). The chardev-send-break command allows to send a break even
> > > if using other backends.
> > >
> > > Signed-off-by: Stefan Fritsch <sf@sfritsch.de>
> > > Acked-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
> >
> 
> Looks good to me,
>  Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
> 
> 
> > ---
> > > v2: added tests and Acked-by line
> > >
> >
> > > +++ b/hmp-commands.hx
> > > @@ -1745,6 +1745,22 @@ Removes the chardev @var{id}.
> > >  ETEXI
> > >
> > >      {
> > > +        .name       = "chardev-send-break",
> > > +        .args_type  = "id:s",
> > > +        .params     = "id",
> > > +        .help       = "send break on chardev",
> >
> > Compare this wording,...
> >
> > > +STEXI
> > > +@item chardev-send-break id
> > > +@findex chardev-send-break
> > > +Sends break on the chardev @var{id}.
> >
> > repeated here,
> >
> > > +++ b/qapi-schema.json
> > > @@ -5114,6 +5114,26 @@
> > >  { 'command': 'chardev-remove', 'data': {'id': 'str'} }
> > >
> > >  ##
> > > +# @chardev-send-break:
> > > +#
> > > +# Send a break to a character device
> >
> > ...with this wording.  I like 'send a break' better than 'send break',
> > but even better might be 'send a break sequence' or even 'emulate a
> > break sequence' (by definition, a break is NOT a character, but on bare
> > metal character devices it IS a defined electrical sequence distinct
> > from characters to make the recipient aware that the sender is trying to
> > get attention).
> >
> > Otherwise, the patch looks fine to me.  If all that changes is some
> > word-smithing (and the maintainer may be willing to do that), you can add:
> > Reviewed-by: Eric Blake <eblake@redhat.com>
> >
> 
> Paolo would you take it (perhaps on the next iteration)?

I can take it through HMP; I'm just doing a pull now.

Dave

> thanks
> -- 
> Marc-André Lureau
--
Dr. David Alan Gilbert / dgilbert@redhat.com / Manchester, UK