On Thu, Oct 18, 2012 at 04:50:25PM +1100, David Gibson wrote:
> At present, using 'system_powerdown' from the monitor or otherwise
> instructing qemu to (cleanly) shut down a pseries guest will not work,
> because we did not have a method of signalling the shutdown request to the
> guest.
>
> PAPR does include a usable mechanism for this, though it is rather more
> involved than the equivalent on x86. This involves sending an EPOW
> (Environmental and POwer Warning) event through the PAPR event and error
> logging mechanism, which also has a number of other functions.
>
> This patch implements just enough of the event/error logging functionality
> to be able to send a shutdown event to the guest. At least with modern
> guest kernels and a userspace that is up and running, this means that
> system_powerdown from the qemu monitor should now work correctly on pseries
> guests.
>
> Signed-off-by: David Gibson <da...@gibson.dropbear.id.au>
Ugh, don't apply this version. When I applied Blue's changes I didn't
test properly and completely broke it.
--
David Gibson | I'll have my music baroque, and my code
david AT gibson.dropbear.id.au | minimalist, thank you. NOT _the_ _other_
| _way_ _around_!
http://www.ozlabs.org/~dgibson
