> But you can also run Linux directly on an LPAR under the thin hypervisor (which I forgot the name) that runs zVM. The name is PR/SM - which, from what I’ve h

> But you can also run Linux directly on an LPAR under the thin hypervisor (which I forgot the name) that runs zVM. The name is PR/SM - which, from what I’ve heard, actually started life as a modified version of VM > The indignity of the mainframe is that it’s booted under control of an x86 machine that itself boots up as an 8086. At least these days the service elements run Linux. Poor OS/2, no more booting mainframes for it anymore, unless they are very old ones