One more thing - The license from IBM, at least ours, prevents a program running on a ZIIP from executing, or causing to be executed, user code on the z/IIP.
Chris Blaicher Technical Architect Mainframe Development Syncsort Incorporated 50 Tice Boulevard, Woodcliff Lake, NJ 07677 P: 201-930-8234 | M: 512-627-3803 E: [email protected] www.syncsort.com -----Original Message----- From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf Of Ed Jaffe Sent: Thursday, July 21, 2016 1:30 PM To: [email protected] Subject: Re: DFSORT and zIIP On 7/21/2016 10:07 AM, Elardus Engelbrecht wrote: > Ed Jaffe wrote: > >> They probably don't want to call E15/E35 exits in SRB mode, ... > Excellent catch! Running an exit while sitting on zIIP is an interesting > scenario. Hmmmm, very very interesting, what will happens when you try out > that little trick? > > And if you're sitting in a micro code while running some things in zIIP, what > will happens? Exit the zIIP and running from CPU while using those micro code > and jump back to zIIP? Just to be clear, zIIP is not a different kind of hardware. It's the same architecture as a CP. When you're dispatched on a zIIP, you're executing exactly the same instructions you would execute on a CP. You're not running "micro code" or anything like that. SORT probably doesn't want to call E15/E35 is SRB mode because the environment is too restrictive for a typical E15/E35 exit. For example: a) the call will be in supervisor state -- that could also be an integrity exposure b) the code is not able to issue SVCs or perform "normal" I/O activities (GET, PUT, EXCP, etc.) -- Edward E Jaffe Phoenix Software International, Inc 831 Parkview Drive North El Segundo, CA 90245 http://www.phoenixsoftware.com/ ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN ________________________________ ATTENTION: ----- The information contained in this message (including any files transmitted with this message) may contain proprietary, trade secret or other confidential and/or legally privileged information. Any pricing information contained in this message or in any files transmitted with this message is always confidential and cannot be shared with any third parties without prior written approval from Syncsort. This message is intended to be read only by the individual or entity to whom it is addressed or by their designee. If the reader of this message is not the intended recipient, you are on notice that any use, disclosure, copying or distribution of this message, in any form, is strictly prohibited. If you have received this message in error, please immediately notify the sender and/or Syncsort and destroy all copies of this message in your possession, custody or control. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
