Thank you Allan. Thank you, Scott R Wandschneider Senior Systems Programmer Infocrossing Office 402.963.8905
-----Original Message----- From: The IBM z/VM Operating System [mailto:[EMAIL PROTECTED] On Behalf Of Alan Altmark Sent: Thursday, June 05, 2008 9:33 AM To: [email protected] Subject: Re: Define/Remove CPU from an MVS Guest On Wednesday, 06/04/2008 at 10:38 EDT, "Wandschneider, Scott" <[EMAIL PROTECTED]> wrote: > In other words there is no way to remove a CPU without an IPL - is that > correct? Correct. To add/remove CPUs dynamically requires use of specific z/Architecture that allows that to occur, but CP doesn't virtualize that architecture. It would be highly inappropriate to rip a CPU out from under a system without telling it the CPU is leaving/gone. So, we reset the guest to avoid any potential for "unpredictable results". We do know that it would be a Good Thing to have that capability so that a guest could shrink or grow its CPU consumption as the number of CPUs in the LPAR shrinks or grows. Alan Altmark z/VM Development IBM Endicott
