I always forget a few details. Before doing the page fix, make your address space non-swappable if it is not already. After the compare, delete the object and make your address space swappable if it was originally swappable.
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 Bill Fairchild Sent: Thursday, June 04, 2009 3:32 PM To: [email protected] Subject: Re: Large Page Support 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 ---------------------------------------------------------------------- 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
