xen on ubuntu 8.10

Compile error 

/usr/src/linux-2.6.27-xen.hg/arch/x86/kernel/time_32-xen.c:469: undefined reference to `__udivdi3'

make[1]: *** [.tmp_vmlinux1] Error 1

make: *** [sub-make] Error 2

 

compile xen kernel on PC not act as root.

make[3]: *** [drivers/net/ixgbe/ixgbe_dcb_nl.o] Error 1
make[3]: *** Waiting for unfinished jobs....
  CC [M]  drivers/media/video/bt856.o
  CC [M]  drivers/media/video/bt866.o
  CC [M]  drivers/usb/serial/oti6858.o
make[2]: *** [drivers/net/ixgbe] Error 2

make[1]: *** [drivers/net] Error 2

 

sysu@sysu-desktop:/boot$ file vmlinuz
vmlinuz: gzip compressed data, from Unix, last modified: Fri Apr 17 12:23:31 2009, max compression
sysu@sysu-desktop:/boot$ file vmlinuz-2.6.24-21-generic
vmlinuz-2.6.24-21-generic: Linux kernel x86 boot executable RO-rootFS, root_dev 0x6801, swap_dev 0x1, Normal VGA