Also tested on power9 w/4.15.0-13-generic #14-Ubuntu  to confirm the
presense of the directory cpu/vulnerabilities

ubuntu@dradis:~$ ls /sys/devices/system/cpu/vulnerabilities
meltdown  spectre_v1  spectre_v2

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  sysfs/cpu: Add vulnerability folder for ppc64el

Status in The Ubuntu-power-systems project:
  Fix Released
Status in linux package in Ubuntu:
  Fix Released

Bug description:

  if you are planning to integrate the following patch, you will need
  the ppc64el patches that could be found attached to this bug:

  From f0dadb2e6bd7b463670a6230d5c23ad859f11c75 Mon Sep 17 00:00:00 2001        
  From: Thomas Gleixner <>
  Date: Sun, 7 Jan 2018 22:48:00 +0100
  Subject: [PATCH 1/3] sysfs/cpu: Add vulnerability folder

  As the meltdown/spectre problem affects several CPU architectures, it makes
  sense to have common way to express whether a system is affected by a
  particular vulnerability or not. If affected the way to express the
  mitigation should be common as well.

  Create /sys/devices/system/cpu/vulnerabilities folder and files for
  meltdown, spectre_v1 and spectre_v2.

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