Messages in this thread | | | Date | Wed, 15 Jan 2003 22:24:12 +1100 | From | Anton Blanchard <> | Subject | Re: 48GB NUMA-Q boots, with major IO-APIC hassles |
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> -- I've already tried and failed on PCI segments. > -- I would be much obliged for advice on this one, especially > -- since the workaround cripples the machine.
I was wondering if we could use pci_scan_bus_parented as a start. Assuming we fixed pci_bus_exists, this should allow us to create overlapping busses.
What else needs fixing? To start with:
* pci config read/writes Should be arch specific, can hide things in struct pci_bus which is passed in. (eg on ppc64 we have to pass an identifier into the low level config read or write)
* pci IO/memory reads/writes No problems on ppc64, it should just work. Are there problems on x86?
* /proc/bus/pci/ As davem pointed out we have a backwards compatibility bit where all devices on domain 0 appear as they always have. Additionally we create another level of directories to represent the domain.
* /proc/pci Need to print the domain
* device printing We need a macro that drivers can use to print their PCI location Then we make that print the domain.
* sysfs I havent looked into this yet
Does anything else spring to mind?
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