Re: [Qemu-devel] [PATCH 6/8] qom: introduce get/set methods for Property

[Anthony Liguori]

On 12/16/2011 07:51 AM, Paolo Bonzini wrote:
> On 12/16/2011 02:11 PM, Gerd Hoffmann wrote:
> > I think we should not touch these. First it doesn't buy us much as we
> > are using the old parse/print functions for the visitor-based access,
> > which doesn't look like a good idea to me. Also they will not stay but
> > will be converted to child<> and link<>, so I think it is better to keep
> > the old stuff in the legacy<> namespace.
>
> I thought the same initially. However, I noticed that the visitor interfaces for
> links is also a string. So, even if a block/char/netdev property later becomes a
> link<>, the interface would not change.

The semantics change though.  A "drive" link takes a flat block device name. 
When it's converted to a link, it will take a QOM path.  Since block devices 
will exist in their own directory, it will certainly still be possible to use 
the flat block device name but since a paths will also be supported, I think 
it's best to clearly distinguish the link based property from the flat block 
device name property.

Regards,

Anthony Liguori

> Paolo