On 28/09/15 15:43, Kieran Alen wrote:
Hello All,

We have noticed that memory balloon feature
on Citrix XenServer 6.5 does not work for guest CentOS 6.X with default kernel 2.6.32.XX.
Is there any known issue for the same ?

Regards,
Kieran A.

This should have been fixed by

http://git.kernel.org/cgit/linux/kernel/git/stable/linux-stable.git/commit/?id=35ae11fd146384d222f3bb1f17eed1970cc92c36

You'll probably have to raise a bugzilla ticket with RedHat to get it backported,

Simon