[Fedora-xen] problem installing 64 bit domU

[Augusto Castelan Carlson]

Hello!

I have Fedora Unity 8 (20071218) x86_64 running in an Athlon 64 (512
RAM) with xen. I'm using the re-spin version because I need kickstart
install to be done from CD/DVD. I'm using this machine with small RAM
for tests only.

When I try to install the domU using virt-manager, it hangs when I
click the first next button after anaconda installer started. The
button stays pressed an nothing happens.

When I try to install the domU using virt-install, it gives a black
screen after starting anaconda installer.
# virt-install -n myguest -r 256 --vnc -l ftp://10.1.121.201/ -x
ks=ftp://10.1.121.201/guest.cfg -f /dev/vgadm/lvadm1

The ftp server is the dom0

xen-libs-3.1.0-13.fc8
kernel-xen-2.6.21-2952.fc8
xen-3.1.0-13.fc8
libvirt-0.3.3-2.fc8
virt-manager-0.5.2-2.fc8
virt-viewer-0.0.2-2.fc8

With Fedora Unitity 8 for i386 everything goes fine.

Thanks in advance,

Regards,
Augusto