[libvirt] Problem with fullyvirtualized guest direct kernel boot

Hi All, I am trying to use fullyvirtualized guest direct kernel boot, but all I see is the following error: libvir: Xen Daemon error : POST operation failed: (xend.err 'Error creating domain: (2, \'Invalid kernel\', "elf_xen_note_check: ERROR: Not a Xen-ELF image: No ELF notes or \'__xen_guest\' section found.\\n")') Kernel, initrd and root file system are extracted from working Fedora 9 disk image without any additional tinkering. Guest Fedora is clean and was installed from scratch. When I use this whole disk image with fullyvirtualized guest BIOS boot with, everything works fine. I also tried paravirtualized guest bootloader with another linux kernel and it also works fine. Xen version is 3.2.1-rc1-pre. Host OS is Ubuntu Hardy. Here is the libvirt config for direct kernel boot: <domain type='xen' id='18'> <name>test1</name> <uuid>4dea22b31d52d8f32516782e98ab3fa0</uuid> <os> <type>linux</type> <loader>/usr/lib/xen/boot/hvmloader</loader> <kernel>/tmp/vmlinuz-2.6.25-14.fc9.i686</kernel> <initrd>/tmp/initrd-2.6.25-14.fc9.i686.img</initrd> <root>/dev/sda1</root> <cmdline>ro</cmdline> </os> <memory>524288</memory> <vcpu>1</vcpu> <devices> <emulator>/usr/lib/xen/bin/qemu-dm</emulator> <disk type='file'> <driver name="tap" type="aio"/> <source file='/tmp/f9_disassembled/root.img'/> <target dev='sda1'/> </disk> <disk type='file'> <driver name="tap" type="aio"/> <source file='/tmp/swap'/> <target dev='sda3'/> </disk> <interface type='bridge'> <source bridge='eth0'/> <mac address='00:16:3e:5d:c7:9e'/> <script path='/etc/xen/scripts/vif-bridge'/> </interface> <graphics type='vnc' port='5904'/> </devices> </domain> What do you think can be the cause of this issue? -- Thanks, Max <libvir-list(a)redhat.com&gt;