Re: [PATCH v7 2/4] virtio_balloon: introduce migration primitives toballoon pages

[Rafael Aquini]

On Tue, Aug 14, 2012 at 11:24:01PM +0300, Michael S. Tsirkin wrote:
> On Tue, Aug 14, 2012 at 05:08:31PM -0300, Rafael Aquini wrote:
> > On Tue, Aug 14, 2012 at 10:59:16PM +0300, Michael S. Tsirkin wrote:
> > > > > > What if there is more than one balloon device?
> > > > > 
> > > > > Is it possible to load this driver twice, or are you foreseeing a future case
> > > > > where this driver will be able to manage several distinct memory balloons for
> > > > > the same guest?
> > > > > 
> > > > 
> > > > Second.
> > > > It is easy to create several balloons they are just
> > > > pci devices.
> > >  
> > > 
> > > 
> > > and it might not be too important to make it work but
> > > at least would be nice not to have a crash in this
> > > setup.
> > >
> > Fair enough. For now, as I believe it's safe to assume we are only inflating one
> > balloon per guest, I'd like to propose this as a future enhancement. Sounds
> > good?
> >  
> 
> Since guest crashes when it's not the case, no it doesn't, sorry :(.
>
Ok, but right now this driver only takes care of 1 balloon per guest, so how
could this approach crash it? 

Your point is a good thing to be on a to-do list for future enhancements, but
it's not a dealbreaker for the present balloon driver implementation, IMHO.
 
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