Hi,
Well, firstly, if you are going to be using the buildpackage
target, instead of the far faster kernel_image target, you should
either configure /etc/kernel-pkg.conf, adding your name and email, and
have that in a keyring your gpg knows about, or pass the --us and --uc
arguments on the command line.
I think, unless you know what you are doing, try first with
kernel_image target.
Next, you seem to have Xen options turned on in your config, and
thus make-kpkg is trying to create a xenu-linux image. This is
undergoing some development, so if you want Xen images, please get the
12.024 version of kernel-package from Sid.
If you are just trying to build a normal kernel, redo your
.config not to have Xen stuff in it.
manoj