CMS hasn’t been able to run without CP for probably at least 50 years. The change to DIAGNOSE I/O in CMS 5.5 (ca. 1988) sealed its fate.
When I arrived in 1982 (end of R3), CMS was even then replete with DIAGNOSE dependencies that I suspect began in VM/370. Regards, Alan Altmark IBM > On Dec 8, 2020, at 5:41 PM, Paul Gilmartin <[email protected]> wrote: > > >> >> On 2020-12-08, at 14:12:21, Bruce Hayden wrote: >> >> z/VM doesn't hide the hardware. In just about all cases, if it won't run >> in an LPAR, it also won't run under z/VM. >> > I recall a counterexample was OpenSolaris. It wouldn't run in > an LPAR, but only under VM. I suspect the matter was not "hid[ing] > the hardware" but required CP services not available from the hardware. > > And CMS? I understand modern CMS will not run in an LPAR but > will run under VM. > >> ... I'm sure SLES 9 since it is so >> old starts up in ESA/390 mode and then switches to z/Architecture mode (64 >> bit.) The z14 doesn't support ESA/390 mode for Linux, so SLES 9 will not >> IPL in an LPAR or under z/VM. I'm not sure what level of z/VM you are on >> now, but you can test it by shutting down Linux, entering SET MACHINE Z, >> and then trying to IPL it. > > -- gil > > ---------------------------------------------------------------------- > For LINUX-390 subscribe / signoff / archive access instructions, > send email to [email protected] with the message: INFO LINUX-390 or visit > http://www2.marist.edu/htbin/wlvindex?LINUX-390 > ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO LINUX-390 or visit http://www2.marist.edu/htbin/wlvindex?LINUX-390
