Re: [Qemu-devel] [PATCH v10 5/8] module: implement module loading

[Gerd Hoffmann]

On Mo, 2013-09-16 at 12:05 +0100, Daniel P. Berrange wrote:
> On Mon, Sep 16, 2013 at 02:50:24PM +0800, Fam Zheng wrote:
> > Added three types of modules:
> > 
> >     typedef enum {
> >         MODULE_LOAD_BLOCK = 0,
> >         MODULE_LOAD_UI,
> >         MODULE_LOAD_NET,
> >         MODULE_LOAD_MAX,
> >     } module_load_type;
> > 
> > and their loading function:
> > 
> >     void module_load(module_load_type).
> > 
> > which loads whitelisted ".so" files of the given type under ${MODDIR}.
> > 
> > Modules of each type should be loaded in respective subsystem
> > initialization code.
> 
> Based on Paolo's note that the SPICE .so module could likely
> end up containing functionality that is spread across several
> different sub-systems, this approach of loading per-type
> seems even more flawed.

spice would need different types indeed (and the list above looks
incomplete).

> I think I'd just have one flat list
> of modules to load and ditch these  MODULE_LOAD_XXXX enums.

Question is how to deal with qemu vs. qemu-img then.  qemu needs
everything and qemu-img needs the block drivers only (and loading
something else probably doesn't work due to unresolved symbols).

cheers,
  Gerd