There are several different protection mechanisms in Z. PROT disables access even when the PSW key is zero.
-- Shmuel (Seymour J.) Metz http://mason.gmu.edu/~smetz3 עַם יִשְׂרָאֵל חַי נֵ֣צַח יִשְׂרָאֵ֔ל לֹ֥א יְשַׁקֵּ֖ר ________________________________________ From: IBM Mainframe Discussion List <[email protected]> on behalf of Mario Bezzi <[email protected]> Sent: Monday, December 2, 2024 10:59 AM To: [email protected] Subject: MLPA and NOPROT External Message: Use Caution Reading the manuals I understand that by using the NOPROT option, MLPA modules get loaded into non write protected storage. I was trying this and while I *think* I properly specified it in IEASYSxx, MLPA modules still get loaded in write protected storage. Is there a way to verify that that option is active? Is there a way using IPCS to see the subpool / storage key for MLPA memory? I also played with the SETPROG LPA ADD command and also in this case modules are loaded in write protected memory (SP241 Key 0). Is there a NOPROT like option for dynamic LPA? Finally I was under the impression that one can only put reentrant modules in [any kind of] LPA, but in my experience both MLPA and dynamic LPA accept non reentrant modules. Reason I am doing this is to learn about system integrity exposures to avoid them. Thanks! mario ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
