Messages in this thread | | | Date | Wed, 1 Jul 2009 13:10:03 +0200 | From | Ingo Molnar <> | Subject | Re: [PATCH] x86: sysctl to allow panic on IOCK NMI error |
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* Maciej W. Rozycki <macro@linux-mips.org> wrote:
> On Tue, 30 Jun 2009, Greg KH wrote: > > > > These days an IOCK NMI typically happens in response to a PCI > > > SERR -- it may be useful to traverse PCI buses to find the > > > offender and dump this information on this occasion too. The > > > south bridge may have additional status too. > > > > Sure, that would be great to have. Care to make a patch? :) > > ENOTIME, sorry. Next year perhaps. Or a homework project for > one of the newbies. ;)
You know that this project would kill a newbie, right? :)
We have no real southbridge drivers on x86 - but we should certainly add some. Also, walking the PCI device tree from NMI context is tricky as the lists there are not NMI safe - we could crash if we happen to get a #IOCK while loading/unloading drivers (which is rare but could happen).
IMHO it's all very much desired functionality, but highly non-trivial.
Ingo
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