Re: [libvirt] [PATCH v3 8/8] conf: aggregate multiple pcie-root-ports onto a single slot
On Fri, 2017-01-06 at 09:53 -0500, Laine Stump wrote:
> I noticed most of the pcie-root-ports get a new value for the
> port attribute after the change, while the chassis attribute
> remains always the same AFAICT.
That's because the chassis attribute is just set to the index of the
controller, while port is set to slot<<3 + function (this was
recommended by some PCI person, Alex I think). I believe chassis needs
to be unique within the entire machine, while port needs to be unique
only for the bus that the controller is connected to.
Again, I don't think this is a problem at all, but it would
be nice to get a confirmation the attributes are indeed
being used properly. Is their meaning documented anywhere?
--
Andrea Bolognani / Red Hat / Virtualization