How to – How to avoid problems running in LPAR mode?
LINUX for S/390 runs in either environment, native, in LPAR, and as a guest under VM/ESA. Running LINUX for S/390 in an LPAR environment you should follow the following configuration guidelines : While OS/390 or VSE/ESA have configuration scripts telling the OS which devices to regard or disregard, LINUX does not. All it has is the kernel parameter list or the parameters passed to a driver with insmod. Unless configured otherwise, LINUX for S/390 will try to autosense all the devices accessible. While this is usually the desired behavior when running native or as guest under VM/ESA it might not be desirable when running in a LPAR environment with shared CHPIDs. This behavior may lead to sharing problems. This is not specific to LINUX, but is also the case with misconfigured OS/390, VM/ESA, and VSE/ESA systems. However, it might become more quickly visible with LINUX’s autosensing mode. If you have a LPAR environment with shared CHPIDs there are two possible approaches possible to avoid
