Re: [Qemu-devel] [PATCH V6 3/4] qmp, nmi: convert do_inject_nmi() to QObject

[Luiz Capitulino <lcapitulino@redhat.com>]

On Wed, 23 Feb 2011 13:25:38 -0600
Anthony Liguori <anthony@codemonkey.ws> wrote:

> On 01/27/2011 02:20 AM, Lai Jiangshan wrote:
> > Make we can inject NMI via qemu-monitor-protocol.
> > We use "inject-nmi" for the qmp command name, the meaning is clearer.
> >
> > Signed-off-by:  Lai Jiangshan<laijs@cn.fujitsu.com>
> > ---
> > diff --git a/hmp-commands.hx b/hmp-commands.hx
> > index ec1a4db..e763bf9 100644
> > --- a/hmp-commands.hx
> > +++ b/hmp-commands.hx
> > @@ -725,7 +725,8 @@ ETEXI
> >           .params     = "[cpu]",
> >           .help       = "Inject an NMI on all CPUs if no argument is given, "
> >                         "otherwise inject it on the specified CPU",
> > -        .mhandler.cmd = do_inject_nmi,
> > +        .user_print = monitor_user_noop,
> > +        .mhandler.cmd_new = do_inject_nmi,
> >       },
> >   #endif
> >   STEXI
> > diff --git a/monitor.c b/monitor.c
> > index 387b020..1b1c0ba 100644
> > --- a/monitor.c
> > +++ b/monitor.c
> > @@ -2542,7 +2542,7 @@ static void do_wav_capture(Monitor *mon, const QDict *qdict)
> >   #endif
> >
> >   #if defined(TARGET_I386)
> > -static void do_inject_nmi(Monitor *mon, const QDict *qdict)
> > +static int do_inject_nmi(Monitor *mon, const QDict *qdict, QObject **ret_data)
> >   {
> >       CPUState *env;
> >       int cpu_index;
> > @@ -2550,7 +2550,7 @@ static void do_inject_nmi(Monitor *mon, const QDict *qdict)
> >       if (!qdict_haskey(qdict, "cpu-index")) {
> >           for (env = first_cpu; env != NULL; env = env->next_cpu)
> >               cpu_interrupt(env, CPU_INTERRUPT_NMI);
> > -        return;
> > +        return 0;
> >       }
> >
> >       cpu_index = qdict_get_int(qdict, "cpu-index");
> > @@ -2560,8 +2560,10 @@ static void do_inject_nmi(Monitor *mon, const QDict *qdict)
> >                   kvm_inject_interrupt(env, CPU_INTERRUPT_NMI);
> >               else
> >                   cpu_interrupt(env, CPU_INTERRUPT_NMI);
> > -            break;
> > +            return 0;
> >           }
> > +
> > +    return -1;
> >   }
> >   #endif
> >
> > diff --git a/qmp-commands.hx b/qmp-commands.hx
> > index 56c4d8b..a887dd5 100644
> > --- a/qmp-commands.hx
> > +++ b/qmp-commands.hx
> > @@ -429,6 +429,34 @@ Example:
> >
> >   EQMP
> >
> > +#if defined(TARGET_I386)
> > +    {
> > +        .name       = "inject-nmi",
> > +        .args_type  = "cpu-index:i?",
> > +        .params     = "[cpu]",
> > +        .help       = "Inject an NMI on all CPUs if no argument is given, "
> > +                      "otherwise inject it on the specified CPU",
> > +        .user_print = monitor_user_noop,
> > +        .mhandler.cmd_new = do_inject_nmi,
> > +    },
> > +#endif
> > +SQMP
> > +inject-nmi
> > +----------
> > +
> > +Inject an NMI on all CPUs or the given CPU (x86 only).
> > +
> > +Arguments:
> > +
> > +- "cpu-index": the index of the CPU to be injected NMI (json-int, optional)
> > +
> > +Example:
> > +
> > +->  { "execute": "inject-nmi", "arguments": { "cpu-index": 0 } }
> > +<- { "return": {} }
> >    
> 
> Please describe all expected errors.  Don't hide this command for 
> !defined(TARGET_I386), instead have it throw an error in the implementation.
> 
> Don't have commands that multiple behavior based on the presence or 
> absence of arguments.  Make it take a list of cpus if you want the 
> ability to inject the NMI to more than one CPU.

We had this exactly same discussion last year:

 http://lists.gnu.org/archive/html/qemu-devel/2010-12/msg01285.html

> 
> Regards,
> 
> Anthony Liguori
> 
> > +
> > +EQMP
> > +
> >       {
> >           .name       = "migrate",
> >           .args_type  = "detach:-d,blk:-b,inc:-i,uri:s",
> >
> >    
>