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[Xen-devel] Re: [linux bisection] complete test-amd64-i386-win-vcpus1



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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