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Date: Sat, 19 Apr 2008 00:38:07 -0600 From: Alex Chiang <achiang@...com> To: Benjamin Herrenschmidt <benh@...nel.crashing.org> Cc: Andrew Morton <akpm@...ux-foundation.org>, pbadari@...ibm.com, linux-kernel@...r.kernel.org Subject: Re: 2.6.25-rc8-mm1 panic in rpaphp_register_slot() Hi Ben, * Benjamin Herrenschmidt <benh@...nel.crashing.org>: > > > The basic idea, which I keep botching on pSeries, is that when we > > make a call to pci_hp_register, we now need to pass it: > > > > pci_hp_register(struct hotplug_slot *slot, struct pci_bus *bus, int slot_nr) > > > > I am having trouble figuring out the slot_nr argument. Basically, > > I want to get the devfn of the slot we're looking at. > > I haven't looked in details yet, but I can already tell that things on > pSeries aren't that simple because we don't necessarily know in advance > about "slots"... > > When you add a physical PCI device to a partition, things can range from: > > - A device gets added to an existing bridge (ie. slot) > - A whole P2P brigde gets added with that device below it (that's a slot too) > - A whole PCI host bridge gets added with that device below it (or with > a P2P bridge below it and the device below that). > > In the later case, it's hard to have any concept of slot since you don't > know anything about the host bridge before it gets added to your partition :-) > > So I'm not sure how much we can use of your slot infrastructure, I'll have > to look, I suspect it can cover some cases but not all of them. *poke* Any update on this? Anything I can do to help? > On Wed, 2008-04-16 at 13:03 -0700, Andrew Morton wrote: > > > > fwiw, http://userweb.kernel.org/~akpm/bh.gz (agains -rc9) contains all > > of > > -mm up to and including > > pci-hotplug-acpi-pci-slot-detection-driver.patch > > and is suitable for review/repair/etc. > > Ok, I'll use that. Thanks, /ac -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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