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

[Avi Kivity]

On 07/08/2009 04:07 PM, Anthony Liguori wrote:
> Avi Kivity wrote:
> > On 07/07/2009 10:26 PM, Ryan Harper wrote:
> > > Add a new monitor command (system_reboot) for a soft reboot which uses
> > > system_powerdown to trigger ACPI shutdown in the guest and once 
> > > shutdown
> > > is complete, trigger a reset instead of exiting qemu.
> > >
> > > Depends on commit a6d6552426dcbf726e5549f08b70c9318d6be14b which 
> > > enabled
> > > ACPI power button support.
> > >
> > > V2:
> > >      -added reset handler to lower the reboot flag on reset.
> > >
> > > Tested with:
> > >      - Ubuntu 9.04 64-bit guest.
> > >      - SLES 10 SP2 32-bit guest.
> > >      - RHEL 5.3 32 and 64 bit guests.
> >
> > I think a combination of system_powerdown, avoiding exit on shutdown, 
> > and system_reset is more flexible as it allows the controller to 
> > modify the guest before rebooting it.
>
> You need notification that the shutdown has occurred.  That's the only 
> bit we're missing today.  It's still not perfect though.
>
> libvirt does system_powerdown, guest completely ignores it, user 
> decides to power off, libvirt cannot tell the difference between user 
> requested power off and ACPI driven power down.

Does the patch handle this case?

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