From: Bjorn Helgaas <bhelgaas@xxxxxxxxxx> Date: Wed, 19 Aug 2015 23:01:19 -0700 > Easier said than done. AFAIK, we won't crash after we add Yijing's > patch. But it's unreasonable to expect people writing to the spec to > know the peculiarities of sparc64/powerpc, so there may be future > things we discover the hard way. We'll just have to deal with them as > we find them. I think it is unreasonable to assume that the PCI root complex is presented as a device in the full PCI bus hierarchy. If one wanted to chop the system up into multiple physical components, hiding the PCI root complex behind some controlled entity (hypervisor or whatever) is the only way to accomplish that. Therefore it is a very reasonable and perhaps even expected design decision to do what both powerpc and sparc64 have done. -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
