src/cpu/ppc/vm/vm_version_ppc.cpp

rev 11916 : 8165235: [TESTBUG] RTM tests must check OS version
Summary: Also change enabling RTM on Aix to OS version 7.2.
Reviewed-by: simonis

*** 272,282 ****
      if (!has_tcheck()) {
        vm_exit_during_initialization("RTM instructions are not available on this CPU");
      }
      bool os_too_old = true;
  #ifdef AIX
!     if (os::Aix::os_version() >= 0x0701031e) { // at least AIX 7.1.3.30
        os_too_old = false;
      }
  #endif
  #ifdef LINUX
      // At least Linux kernel 4.2, as the problematic behavior of syscalls
--- 272,289 ----
      if (!has_tcheck()) {
        vm_exit_during_initialization("RTM instructions are not available on this CPU");
      }
      bool os_too_old = true;
  #ifdef AIX
!     // Actually, this is supported since AIX 7.1.. Unfortunately, this first
!     // contained bugs, so that it can only be enabled after AIX 7.1.3.30.
!     // The Java property os.version, which is used in RTM tests to decide
!     // whether the feature is available, only knows major and minor versions.
!     // We don't want to change this property, as user code might depend on it.
!     // So the tests can not check on subversion 3.30, and we only enable RTM
!     // with AIX 7.2.
!     if (os::Aix::os_version() >= 0x07020000) { // At least AIX 7.2.
        os_too_old = false;
      }
  #endif
  #ifdef LINUX
      // At least Linux kernel 4.2, as the problematic behavior of syscalls