-----Original Message----- From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On Behalf Of Ted MacNEIL Sent: Friday, August 31, 2007 5:31 PM To: IBM-MAIN@BAMA.UA.EDU Subject: Re: Virtual Storage implementation
<SNIP> This was a problem when I worked with VM/SP and MVS guests 20 years ago, and is still a problem with LINUX under z/VM, today. <SNIP> Would that have been before IEF (Interpretive Execution Facility)? Once MVS was dispatched via SIE (Start Interpretive Execution), MVS was responsible for its own paging, much of its own I/O, and CPU dispatch issues. Without SIE, VM had to have shadow tables to "help" MVS do paging (an attempt to not page paging). By using IEF for LINUX, it would get x storage, and then have to do its own storage management. VSE, as I recall, was told that it had 32MB (or something similar) and VM then took care of the paging (because VSE didn't page in that case) -- must understand the memory system used by VSE (similar to VS1). Regards, Steve Thompson Opinions of poster are strictly those of the poster. -- ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
