[Pkg-xen-devel] Bug#684661: Xen panic on boot

[Stephan Beyer]

Package: xen-hypervisor-4.1-amd64
Version: 4.1.3~rc1+hg-20120614.a9c0a89c08f2-5
Severity: important

I updated from xen-hypervisor-4.0-amd64 to xen-hypervisor-4.1-amd64
and the system did not boot anymore (Xen panic).
A downgrade made the system work again.
I cannot paste the boot error messages but the main message was:

	Xen BUG at pci_amd_iommu.c:33

The bug appears for Linux images 3.2.0.2 from squeeze and for 3.4-trunk
and 3.5-trunk from experimental.

Best
  Stephan

PS: Furthermore note that on Linux 3.2.0.2, xen-hypervisor-4.0-amd64
floods the console/logs with powernow-k8 transition error messages, see

 * http://bugzilla.xen.org/bugzilla/show_bug.cgi?id=1789
 * http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=373947

However, Linux image 3.5-trunk and xen-hypervisor-4.0-amd64 seem to
work nicely.