On Thu, Aug 09, 2012 at 02:24:44PM -0400, Martin, Terry R. (CMS/CTR) (CTR) wrote: > Hi > > I think I know the answer to this but wanted to confirm. > > If I need to add Logical CPUS to an LPAR does this take an IPL > of the LPAR to get them in ?
In general: you can add additional CPUs to a running LPAR without the need of an IPL. How that works from within Linux however depends on the distribution you use, since the CPU detection and CPU enabling code has been changed several times. You can add additional CPUs to a running LPAR: select the LPAR on your HMC/SE then "Operational Customization" -> "Logical Processor Add" Dependent on the kernel version / distribution Linux should automatically detect the new CPU(s). Newer kernel versions / distributions also support enabling of reserved CPUs, which have been defined in the activation profile of the LPAR. ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 ---------------------------------------------------------------------- For more information on Linux on System z, visit http://wiki.linuxvm.org/
