Re: [Qemu-devel] [PATCH v13 6/6] qom: support arbitrary non-scalar properties with -object

[Kevin Wolf]

Am 19.09.2016 um 14:12 hat Daniel P. Berrange geschrieben:
> On Mon, Sep 19, 2016 at 12:58:30PM +0100, Daniel P. Berrange wrote:
> > Fortunately there is no existing object that implements
> > the UserCreatable interface that relies on the list
> > handling behaviour, so it is possible to swap out the
> > OptsVisitor for a different visitor implementation, so
> > -object supports non-scalar properties, thus leaving
> > other users of OptsVisitor unaffected.
> 
> Urgh, I've just discovered that this is not in fact true.
> 
> The 'memory-backend' object type uses uint16List which
> has the hacky list syntax
> 
>   -object memory-backend-ram,\
>           id=ram-node2,size=24578621440,policy=bind,\
>           host-nodes=1-2,host-nodes=5,host-nodes=7,
> 
> So I'll need to figure out a way to preserve this syntax...

If this turns out rather hard, would it make sense to merge just patches
1 to 5 for now to enable -blockdev, which doesn't need this syntax? Then
you can add the magic list syntax as a follow-up together with the
-object work.

Kevin