CPU Page Table Isolation (PTI) Feature is unavailable for RHEL 6.9 and RHEL 7.4

Solution Verified - Updated -

Issue

  • CPU Page Table Isolation (PTI) Feature is unavailable on RHEL 6.9 and RHEL 7.4.

  • Kernel Page Table Isolation (KPTI) feature is disabled on RHEL 6.9 and RHEL 7.4.

    # cat /sys/kernel/debug/x86/pti_enabled 
cat : /sys/kernel/debug/x86/pti_enabled: No such file or directory

Environment

  • Red Hat Enterprise Linux 6.9
  • Red Hat Enterprise Linux 7.4
  • Vmware ESX host

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