Re: kvm PCI assignment & VFIO ramblings

On Mon, Aug 22, 2011 at 09:17:41AM -0400, Avi Kivity wrote:

On 08/22/2011 04:15 PM, Roedel, Joerg wrote:

quoted

On Mon, Aug 22, 2011 at 09:06:07AM -0400, Avi Kivity wrote:

quoted

 On 08/22/2011 03:55 PM, Roedel, Joerg wrote:

quoted

 >  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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