2.download these packages from Xen official website
xen-3.4.2.tar.gz => uncompress to ../xen-4.3.2
linux-2.6.18-xen-3.4.2.tar.gz => uncomcompress to ../xen-4.3.2/linux-2.6.18-xen.hg from now on, the base directory of paths mentioned below is /xen-4.3.2
3.put these files in /stubdom/
11.restart and choose the Xen kernel.
I got a crash here because I did these steps in VirtualBox. The info of the crash is "Crash Guru Meditation -2304 (VERR_REM_TOO_MANY_TRAPS)". It seems VB can't support virtualization guest OS, I also got failure when trying to install ESXi 3.5. The experience will continue when I got standalone machine and I'm not sure current result is correct. So pls don't follow me or you will be on your own risk.
to be continued ... Reference
http://hi.baidu.com/shuxiaotu/blog/item/c1854cf9236e6104d9f9fd94.html
http://deidara.blog.iyunv.com/400447/269062