If you are on z/VM 5.2.0, it looks like CMS 22 includes the IOCP support for z9 EC. For other releases, look for these APARs: VM63921 and VM63740.
____________________________________ Rick Barlow Systems Engineering Consultant Nationwide Services Co., Enterprise Business Intelligence Services Mainframe, z/VM and zSeries Linux Support One Nationwide Plaza 3-20-13 Columbus OH 43215-2220 U.S.A Voice: (614) 249-5213 Fax: (614) 677-0821 mailto:[EMAIL PROTECTED]