Ian Jackson writes ("Re: [linux bisection] complete
test-amd64-i386-win-vcpus1"):
> xen.org writes ("[linux bisection] complete test-amd64-i386-win-vcpus1"):
> > *** Found and reproduced problem changeset ***
> >
> > Bug is in tree: xen http://hg.uk.xensource.com/xen-unstable.hg
> > Bug introduced: fbf3768e5934
> > Bug not present: 3795d79c740b
> >
> >
> > changeset: 23733:fbf3768e5934
> > user: Wei Wang <wei.wang2@xxxxxxx>
> > date: Thu Jul 21 14:37:47 2011 +0100
> >
> > AMD IOMMU: remove global interrupt remapping table
> >
> > ...use per-device table instead.
> >
> > This should work with per-cpu IDTs. We are safe to remove global
> > table since SATA device id issue doee not appear in recent
> > production BIOS.
> >
> > Signed-off-by: Wei Wang <wei.wang2@xxxxxxx>
>
> This is a bit suspicious. I'm not sure I believe it. If nothing
> else, it seems confused about which branch it was testing.
Having looked into this it seems to be true. This has broken booting
on at least one Intel machine.
Logs here of a failure:
http://www.chiark.greenend.org.uk/~xensrcts/logs/8342/test-amd64-i386-win-vcpus1/
We seem to get this:
Aug 9 06:20:18.307583 (XEN) ENABLING IO-APIC IRQs
Aug 9 06:20:18.311548 (XEN) -> Using new ACK method
Aug 9 06:20:18.315149 (XEN) ..TIMER: vector=0xF0 apic1=0 pin1=2 apic2=-1
pin2=-1
Aug 9 06:20:18.323569 (XEN) AMD-Vi: IO_PAGE_FAULT: domain = 0, device id =
0x00a0, fault address = 0xfdf8f00144
Aug 9 06:20:18.339533 (XEN) AMD-Vi: IO_PAGE_FAULT: domain = 0, device id =
0x00a0, fault address = 0xfdf8f00144
Aug 9 06:20:18.355630 (XEN) AMD-Vi: IO_PAGE_FAULT: domain = 0, device id =
0x00a0, fault address = 0xfdf8f00144
Aug 9 06:20:18.367603 (XEN) AMD-Vi: IO_PAGE_FAULT: domain = 0, device id =
0x00a0, fault address = 0xfdf8f00144
Aug 9 06:20:18.387207 (XEN) AMD-Vi: IO_PAGE_FAULT: domain = 0, device id =
0x00a0, fault address = 0xfdf8f00144
Aug 9 06:20:18.399137 (XEN) AMD-Vi: IO_PAGE_FAULT: domain = 0, device id =
0x00a0, fault address = 0xfdf8f00144
Aug 9 06:20:18.407608 (XEN) AMD-Vi: IO_PAGE_FAULT: domain = 0, device id =
0x00a0, fault address = 0xfdf8f00144
Aug 9 06:20:18.427206 (XEN) AMD-Vi: IO_PAGE_FAULT: domain = 0, device id =
0x00a0, fault address = 0xfdf8f00144
[ loads more ]
Ian.
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