Re: Use of virtio device IDs

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On Wednesday 07 November 2007 16:40:13 Avi Kivity wrote:
> Gregory Haskins wrote:
> >  but FWIW: This is a major motivation for the reason that the
> > IOQ stuff I posted a while back used strings for device identification
> > instead of a fixed length, centrally managed namespace like PCI
> > vendor/dev-id.  Then you can just name your device something reasonably
> > unique (e.g. "qumranet::veth", or "ibm-pvirt-clock").
>
> I dislike strings.  They make it look as if you have a nice extensible
> interface, where in reality you have a poorly documented interface which
> leads to poor interoperability.

Yes, you end up with exactly names like "qumranet::veth" 
and "ibm-pvirt-clock".  I would recommend looking very hard at /proc, Open 
Firmware on a modern system, or the Xen store, to see what a lack of 
limitation can do to you :)

> We will support non-pci for s390, but in order to support Windows and
> older Linux PCI is necessary.

The aim is that PCI support is clean, but that we're not really tied to PCI.  
I think we're getting closer with the recent config changes.

Cheers,
Rusty.
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