Re: [Qemu-devel] [PATCH][RESEND] Add monitor command for system_reboot

[Avi Kivity]

On 07/08/2009 06:43 PM, Ryan Harper wrote:
> > That suffers from the same problem as a system_reboot command in that
> > the guest may never start the shutdown. If that's an acceptable
> > limitation, then we might as well implement it directly in QEMU as
> > system_reboot so its easily available to everyone. Make 'system_reboot'
> > take an optional timeout arg (default to 60 seconds) after which it
> > cancels its plans.
> >      
>
> This seems the most reasonable thing to me.  As already mentioned,
> system_powerdown already is non-deterministic since the guest could
> ignore the ACPI event.
>    

It could also send the guest to sleep or initiate the self destruct 
sequence.  I don't think we should press the power button unless the 
user explicitly asked us to.  This means we'll need a guest agent like Xen.

I believe ACPI supports additional buttons, we can add a new one and 
designate it as a shutdown button.  It will only work with modified 
guests though.

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