Does VM simulate those instructions that are found in the virtual guest environment but not on the real hardware? I don't find the *concept* to be inconceivable, although the reality may very well be a different matter.
There was recently a discussion on the assembler list about how VM "down-simulates" the hardware architecture in a Live Guest Relocation (LGR) environment: if you have a z13 and a z12 configured as an LGR "group" (not sure of the correct term) then an OS that is IPLed as a guest on the z13 is apparently "told" that only z12 facilities exist, so that it could take up residence on the z12 at a moment's notice. Apparently this is mostly for Linux. Peter Relson asserted that it would not work for z/OS, although there was some discussion about why it would or could not. Might VM also "up-simulate" in some circumstances? Charles -----Original Message----- From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On Behalf Of Jim Mulder Sent: Saturday, April 6, 2019 8:35 PM To: IBM-MAIN@LISTSERV.UA.EDU Subject: Re: z114 and z/OS 2.3 Inconceivable! (And that word does mean what I think it means.) I would need to see a dump of this to believe it. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
