GLYPH<SM590000> Change LPAR Group Controls scheduled operation  GLYPH<SM590000> Linux Secure IPL is available for LPARs running on z15 CPCs HMC/SE Version 2.15.0 added a Change LPAR Group Controls scheduled operation (see  Figure 10-3) to allow scheduling the change of the CPs/zIIPs/ICFs/IFLs absolute capping  status for an LPAR Group.  This new feature checks the software signature before loading the code into the LPAR  storage (memory). When Linux Secure IPL is enabled, the signature of the operating  system being loaded is compared with the signature from the Linux on Z distribution  provider. The load fails if the signatures do not match. The feature can be enabled by the selecting the  Verify software signature with  distributor  option in the image profile load Load task, as shown in Figure 10-4. This  feature supports Linux on Z running in an LPAR on a z15 CPC. Figure 10-4 Customize load profile  Figure 10-3 Scheduled Operations for Change LPAR Group Controls Chapter 10. Hardware Management Console and Support Element  413