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Date: Fri, 10 Oct 2014 16:49:25 +0200
From: Andreas Hartmann <andihartmann@freenet.de>
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To: Bjorn Helgaas <bhelgaas@google.com>
CC: Alex Williamson <alex.williamson@redhat.com>,
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Subject: Re: Hard and silent lock up since linux 3.14 with PCIe pass
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Bjorn Helgaas schrieb:
> On Fri, Oct 10, 2014 at 3:39 AM, Andreas Hartmann
> <andihartmann@freenet.de> wrote:
>> shortly: I retested w/ qemu 2.1.0 and Linux 3.17.0 - no change in behaviour.
>>
>> Alex Williamson wrote:
>>> On Tue, 2014-09-23 at 21:03 +0200, Andreas Hartmann wrote:
>>>> Hello!
>>>>
>>>> Since long time now, I'm using w/o any problem PCIe pass through with a
>>>> Gigabyte GA-990XA-UD3/GA-990XA-UD3 mainboard (AMD 990X chipset) and
>>>> enabled IOMMU with vfio-pci.
>>>>
>>>> The last kernel working w/o any problem is kernel 3.13.7 (I didn't use
>>>> .8 and .9, but I do not think they would have been problematic).
>>>>
>>>> Since 3.14.19 (I didn't test any 3.14 kernel before) I'm encountering a
>>>> hard and silent lock up of the complete machine when starting the VM
>>>> with the PCIe card passed through.
> 
> Since we're not really making any progress on this yet, would it be
> possible to bisect it?  We already know that 3.13.7 works and 3.14.19
> fails, and "git bisect start v3.14 v3.13" says it's about 13 steps.  I
> know that's still quite a bit of work, but at least it sounds like the
> problem is easy to reproduce.

Which git repository should I use best?

Is it possible to do one checkout and work afterwards always on base of
this? Unfortunately my internet connection is very slow :-(.


Thanks for your hint!

Regards,
Andreas