Re: [PATCH -v2] x86, pci: Handle fallout pci devices with peer rootbus

From: H. Peter Anvin
Date: Mon Jun 14 2010 - 17:11:10 EST

On 06/14/2010 01:20 PM, Bjorn Helgaas wrote:
> OK, but Graham's system doesn't have anything resembling a PCI-to-PCI
> bridge leading to bus 80. So while I agree that in an ideal world,
> HT/PCI host bridges might always look like PCI-to-PCI bridges, it
> seems this is not the case in practice.

Invisible PCI bridges have been known to occur in pure PCI space, too.

> Yes, absolutely. My point is that what the HT spec means by "host bridge"
> is not the same as what the PCI spec and Linux mean by "PCI host bridge".

Actually, they're *exactly* the same thing.

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