kvm PCI assignment & VFIO ramblings

[Roedel, Joerg]

On Mon, Aug 22, 2011 at 09:17:41AM -0400, Avi Kivity wrote:
> On 08/22/2011 04:15 PM, Roedel, Joerg wrote:
> > On Mon, Aug 22, 2011 at 09:06:07AM -0400, Avi Kivity wrote:
> > >  On 08/22/2011 03:55 PM, Roedel, Joerg wrote:
> >
> > >  >  Well, I don't think its really meaningless, but we need some way to
> > >  >  communicate the information about device groups to userspace.
> > >
> > >  I mean the contents of the group descriptor.  There are enough 42s in
> > >  the kernel, it's better if we can replace a synthetic number with
> > >  something meaningful.
> >
> > If we only look at PCI than a Segment:Bus:Dev.Fn Number would be
> > sufficient, of course. But the idea was to make it generic enough so
> > that it works with !PCI too.
> >
> 
> We could make it an arch defined string instead of a symlink.  So it 
> doesn't return 42, rather something that can be used by the admin to 
> figure out what the problem was.

Well, ok, it would certainly differ from the in-kernel representation
then and introduce new architecture dependencies into libvirt. But if
the 'group-string' is more meaningful to users then its certainly good.
Suggestions?

	Joerg

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