Adjusting the vCPU Count for dom0 in XenServer 6.1.0
http://support.citrix.com/article/CTX134738
Performance Monitoring Enhancements Pack for XenServer 6.1
http://support.citrix.com/article/CTX135033
Enabling vhostmd for SAP in XenServer 6.1.0
http://support.citrix.com/article/CTX134790
XenServer Tools workaround for XenServer 6.1.0
http://support.citrix.com/article/CTX135099