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[Frank Heimes <1744736@xxxxxxxxxxxxxxxxxx>]

** Changed in: linux (Ubuntu)
       Status: Fix Committed => Fix Released

** Changed in: ubuntu-z-systems
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1744736

Title:
  Ubuntu 16.04 - s390/cpuinfo: show facilities as reported by stfle

Status in Ubuntu on IBM z Systems:
  Fix Released
Status in linux package in Ubuntu:
  Fix Released
Status in linux source package in Xenial:
  Fix Released

Bug description:
  == SRU Justification ==
  IBM is requesting these two commits in Xenial, which are already
  in Artful and Bionic.  These commits allow identifying the microcode level
  [MCL] of a [Z] system, hence let's one [IBM] know if the level includes
  mitigation for Spectre or not.

  Both commits are in mailine as of v4.12-rc1.

  == Fixes ==
  09214545c4a4 ("s390/bitops: add for_each_set_bit_inv helper")
  157467ba9fb7 ("s390/cpuinfo: show facilities as reported by stfle")

  == Regression Potential ==
  Low.  These fixes are specific to s390.

  
  == Original Bug Description ==
  Please backport this upstream commit:

  commit 157467ba9fb7e379f0540707dd89111de441e45e
  Author: Heiko Carstens <heiko.carstens@xxxxxxxxxx>
  Date:   Sat Feb 25 12:16:48 2017 +0100

      s390/cpuinfo: show facilities as reported by stfle

      Add a new line to /proc/cpuinfo which shows all available facilities
      as reported by the stfle instruction:

      > cat /proc/cpuinfo
      ...
      facilities      : 0 1 2 3 4 6 7 ...
      ...
  As pre-req, also apply commit 9194bc62e6314f4d8cef60e80070ca2bb4182e99
  Author: Heiko Carstens <heiko.carstens@xxxxxxxxxx>
  Date:   Sat Feb 25 12:16:31 2017 +0100

      s390/bitops: add for_each_set_bit_inv helper

      Same helper function like for_each_set_bit in generic code.

  which introduces for_each_set_bit_inv() that is used to process the
  facilities bits.

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