On Fri, 2016-06-24 at 21:27 +0000, VANDER WOUDE, PETER wrote: > I found a discussion on a Hercules-390 discussion group, and the IAF2 > facility was mentioned as being needed. > > How can this be enabled in Hercules? > > Regards, > Peter > >
The short answer is to build Hercules from the Hyperion repository. IAF2 is not available in the Hercules _releases_ yet. IAF2 is implemented in the Hyperion (4.0) repository. It requires a compiler that supports C11 atomic intrinsics. If your compiler lacks them, you should get a build error. Depending upon whether IAF2 can be built will dictate whether the IAF2 STFLE bit is set. The PFPO STFLE (bit 44) must be manually enabled with the archlvl command. There is also a requirement, reported on this list with regards to zPDT, related to the CPU model expected by Ubuntu. Set an expected CPU model in the Hercules configuration. Dynamically loaded modules will not influence the STFL[E] settings. The build process is documented on the Hercules web pages. I would recommend setting the compiler optimization to O2 during the configure run if using a recent version of gcc. clang has been reported as more reliable for Hercules. Harold Grovesteen ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 ---------------------------------------------------------------------- For more information on Linux on System z, visit http://wiki.linuxvm.org/
