I would expect that if Address Space Layout Randomization is active. Is ASLR(YES) specified in DIAGxx?
The D DIAG command, or VERBX IGVDGNIP under IPCS, will tell you. Jim Mulder -----Original Message----- From: IBM Mainframe Discussion List <[email protected]> On Behalf Of Mark Jacobs Sent: Monday, September 9, 2024 6:16 PM To: [email protected] Subject: Re: 24-bit private region on z16 processor I'm 99% sure those parameters aren't in any of the systems where I'm being weirded out as it relates to where low private begins when I look at it using SDSF VMAP, but I'll check tomorrow. Mark Jacobs Sent from ProtonMail, Swiss-based encrypted email. GPG Public Key - https://api.protonmail.ch/pks/lookup?op=get&[email protected] On Monday, September 9th, 2024 at 4:40 PM, Allan Staller <[email protected]> wrote: > Classification: Confidential > > "Low Core" generally extend up to about x'6000' (give or take). This is the > start of low private. > V=R and ADDRSPC storage IIRC is just above this so actual "low private" may > start (e.g. x'8000') depending on values for V=R and ADDRSPC=REAL stoarge. > > FWIW, these 2 parameters date from "day 1" of virtual storage and are > probably useless in this day and age. > If they are still present in IEASYSxx, I would suggest removing them when > convenient. > > HTH, > > -----Original Message----- > From: IBM Mainframe Discussion List [email protected] On Behalf > Of Mark Jacobs > > Sent: Monday, September 9, 2024 3:05 PM > To: [email protected] > Subject: Re: 24-bit private region on z16 processor > > [CAUTION: This Email is from outside the Organization. Unless you > trust the sender, Don’t click links or open attachments as it may be a > Phishing email, which can steal your Information and compromise your > Computer.] > > I'm not talking about the top of the 24-bit private region, I'm looking at > the beginning/bottom of the region and it's starting all over the place. > > Mark Jacobs > > Sent from ProtonMail, Swiss-based encrypted email. > > GPG Public Key - > https://api.protonmail.ch/pks/lookup?op=get&search=markjacobs@protonma > il.com > > > > > On Monday, September 9th, 2024 at 2:30 PM, Mike Schwab > [email protected] wrote: > > > Varies by operating system level occasionally PTF, and user > > configuration such as TSO in (non-)LPA area. > > > > On Mon, Sep 9, 2024 at 8:25 AM Mark Jacobs > > [email protected] wrote: > > > > > Silly question. Is there anything different as it relates to sizing of > > > the 24-bit private region on z16 processors? > > > > > > Mark Jacobs ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
