Allocate a one-MB object above the bar, page fix it, get the 64-bit real address of the starting virtual address, the 64-bit real address of the starting virtual address +4K, and off bits 51-63 (with a mask of X'FFFFFFFFFFFFE000') of both addresses, and compare the two real addresses that are left after the and operation. If they are equal, then you have large page support.
Bill Fairchild Software Developer Rocket Software 275 Grove Street * Newton, MA 02466-2272 * USA Tel: +1.617.614.4503 * Mobile: +1.508.341.1715 Email: [email protected] Web: www.rocketsoftware.com -----Original Message----- From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf Of Mark Zelden Sent: Thursday, June 04, 2009 2:57 PM To: [email protected] Subject: Large Page Support Is there a way to tell that large page support is really available other than checking CVTEDAT and scanning the IPA for LFAREA= (something other than 0M)? Mark -- Mark Zelden Sr. Software and Systems Architect - z/OS Team Lead Zurich North America / Farmers Insurance Group - ZFUS G-ITO mailto:[email protected] z/OS Systems Programming expert at http://expertanswercenter.techtarget.com/ Mark's MVS Utilities: http://home.flash.net/~mzelden/mvsutil.html ---------------------------------------------------------------------- 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 ---------------------------------------------------------------------- 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
