On Tue, 2011-11-15 at 16:08 -0500, James Paradis wrote: > > Bjorn, > > > > > > > > Is this problem a regression? If so, what commit caused it? > > > f07852d6442, which introduced only_one_child()? > > > > That's a tough question to answer. AFAICT the broken (HARDWARE > > broken) Stratus systems only enumerated properly by chance. Did > > they work prior to f07852d6? From what jparadis told me, yes. Is > > it a regression? ... depends on how you look at it. > > Yes, that is the commit that caused the problem. > > > > Does Windows work on this system? > > > > I don't know. jparadis? Any clue? > > Windows works just fine on this system, probably because they > don't optimize the PCIE scan in this way... > > > > Is this something that could be fixed by a firmware upgrade? If > > > so, > > > is there a Stratus/NEC bug report? > > > > Hmmm, the idea of a FW upgrade somehow fixing this never occurred to > > me. jparadis? Is that possible? > > I seriously doubt it, but I can ask the hardware folks at Stratus. > I believe that at least some of this topology is baked in... James, I think a lot of people are wondering why this is only now coming up as the patch in question has been upstream for a couple of years. While the system has been in the field for awhile - has the I/O subsystem that exhibits this issue been there since the introduction of this type of system -or- is there a new, PCI Express based, I/O subsystem now being introduced that can be used with the original platform and this is why we are just now seeing the issue? Myron > > > > Is there a Red Hat bugzilla URL you could include? > > > > Only happens upstream. > > Well, to be fair, we actually saw this behavior beginning with > Fedora 14, but never pursued the matter until now. I suppose > we could have filed a Fedora bug, but we wanted to root-cause the > problem first. > > --jim > -- 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
