On Wed, Jun 13, 2012 at 04:57:28PM +0200, Paolo Bonzini wrote: > Il 13/06/2012 16:53, Daniel P. Berrange ha scritto: > >>> > > I don't think SUSPEND can be used to DoS, since once the VM > >>> > > is in the suspend state, a monitor command is required to wake > >>> > > it up again before the guest OS can trigger a new suspend. > >> > > >> > Can't the guest OS awake itself? > > I didn't think so. Even if it can, we can't rate limit SUSPEND > > events in isolation, because they must be strictly ordered > > wrt RESUME events. > > It can program the RTC to awake the OS, but only at 1 wakeup/second.
Ah that hardware rate limit is good - we don't need todo separate throttling with this event then. Daniel -- |: http://berrange.com -o- http://www.flickr.com/photos/dberrange/ :| |: http://libvirt.org -o- http://virt-manager.org :| |: http://autobuild.org -o- http://search.cpan.org/~danberr/ :| |: http://entangle-photo.org -o- http://live.gnome.org/gtk-vnc :|
