CentOS virt - Jul 2009 - Installing/running Fedora 10 or Fedora 11 32b Xen domU on CentOS 5.3 x86_64 host/dom0 broken

Hello.

Yesterday I tried installing Fedora 10 and Fedora 11 i386 Xen domUs/guests
using virt-install and/or virt-manager on CentOS 5.3 Xen x86_64 dom0/host.

It doesn't work. The guest kernel crashes early and the graphical VNC
console
newer shows up.

Installing x86_64 domU on x86_64 dom0 work well. 32-on-32 works aswell. 
So it's a 32-on-64 bug.

CentOS 5.3 32b guest on x86_64 host works though, most probably because it
uses the "original" Xenlinux patchset.

I found the upstream bug: https://bugzilla.redhat.com/show_bug.cgi?id=467698

This problem will be fixed in upcoming RHEL 5.4, and it's also fixed in the
latest el5 test kernel-xen (-159).

I think this is not really F10 or F11 guest specific, but more likely will
happen
with any/many upstream (kernel.org) pv_ops Xen domU kernels.

-- Pasi