** Tags removed: verification-needed-utopic
** Tags added: verification-done-utopic

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  24x7 counters: Bug in catalog_read()

Status in “linux” package in Ubuntu:
  Fix Released
Status in “linux” source package in Trusty:
Status in “linux” source package in Utopic:
  Fix Committed
Status in “linux” source package in Vivid:
  Fix Released

Bug description:
  SRU Justification:

  When using POWER8 in HV mode one cannot access 

  [Test Case]
  cp /sys/bus/event_source/devices/hv_24x7/interface/catalog /tmp
  ls -l /tmp/catalog
  # this should show a file with a size > 0

  56f12bee55d740dc47eed0ca9d5c72cffdffd6cf which is in 3.18-rc1
  It is a clean cherry pick into 3.16/3.13.


  ---Problem Description---
  24x7 counters: Bug in catalog_read()

  ---Additional Hardware Info---
  Power8 system with support for 24x7 counters

   Machine Type = Power8 IBM,9119-MME

  ---Steps to Reproduce---
  cp /sys/bus/event_source/devices/hv_24x7/interface/catalog /tmp
  ls -l /tmp/catalog

  Shows a file size 0 for the /tmp/catalog.

  We recently discovered a bug in the upstream Linux kernel. It was
  fixed by this patch


  and that patch is scheduled to be included in powerpc tree.

  When it is included, we should back port to Ubuntu 14.10 or next

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