I have been testing graphics passthru using xen-4.1-unstable on an i915 chipset, and have a null dereference within the xenfront PCI driver code (backtrace in attached guest-dmesg). This oops is in response to the following xm commands executed on the host: # xm pci-detach fc13-64 0:00:02.1 # xm pci-detach fc13-64 0:00:02.0 Error: Timed out waiting for device model action Usage: xm pci-detach <Domain> <domain:bus:slot.func> This will also happen if 0:00:02.1 is not removed. I''m available to test patches or provide additional debugging information if that would be useful. -- Daniel De Graaf National Security Agency _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel