Unable to boot Xen 4.1.3 with kernel image shared through cifs

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http://unix.stackexchange.com – I've configured xen 4.1.3 with CentOS 6.3 and kernel version 3.5.3. I've vm images to my network shares over cifs. cifs is mounted and i can access it from my Dom0 but when try to boot vm using the image file which is on cifs , it does not boot. If i save the same image to Dom0's local disk it boot and work fine. I want that cifs boot image should work as It works with CentOS 5.8 with Xen3 Kindly help in this regard. (HowTos)