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[Leann Ogasawara <leann.ogasawara@xxxxxxxxxxxxx>]

Public bug reported:

== Xenial SRU Justification ==
HP Gen8 servers were having kernel panics with the 4.2 and 4.4 kernel which is apparently resolved with the following commits.  HP would like to see these SRU'd for Xenial.

commit 0caa7616a6aca449dd68b58cb29bd491d296c2d5
Author: Aaron Campbell <aaron@xxxxxxxxxx>
Date:   Sat Jul 2 21:23:24 2016 -0300

    iommu/vt-d: Fix infinite loop in free_all_cpu_cached_iovas

commit 522e5cb76d0663c88f96b6a8301451c8efa37207
Author: Joerg Roedel <jroedel@xxxxxxx>
Date:   Fri Jul 1 16:42:55 2016 +0200

    iommu/amd: Fix unity mapping initialization race

== Testing ==
HP confirms their testing shows these patches resolves the issue on several test machines.

** Affects: linux (Ubuntu)
     Importance: High
         Status: Triaged

** Affects: linux (Ubuntu Xenial)
     Importance: High
         Status: Triaged

** Also affects: linux (Ubuntu Xenial)
   Importance: Undecided
       Status: New

** Changed in: linux (Ubuntu)
       Status: New => Triaged

** Changed in: linux (Ubuntu)
   Importance: Undecided => High

** Changed in: linux (Ubuntu Xenial)
       Status: New => Triaged

** Changed in: linux (Ubuntu Xenial)
   Importance: Undecided => High

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https://bugs.launchpad.net/bugs/1604314

Title:
  [Xenial] iommu/amd: Fix unity mapping initialization race

Status in linux package in Ubuntu:
  Triaged
Status in linux source package in Xenial:
  Triaged

Bug description:
  == Xenial SRU Justification ==
  HP Gen8 servers were having kernel panics with the 4.2 and 4.4 kernel which is apparently resolved with the following commits.  HP would like to see these SRU'd for Xenial.

  commit 0caa7616a6aca449dd68b58cb29bd491d296c2d5
  Author: Aaron Campbell <aaron@xxxxxxxxxx>
  Date:   Sat Jul 2 21:23:24 2016 -0300

      iommu/vt-d: Fix infinite loop in free_all_cpu_cached_iovas

  commit 522e5cb76d0663c88f96b6a8301451c8efa37207
  Author: Joerg Roedel <jroedel@xxxxxxx>
  Date:   Fri Jul 1 16:42:55 2016 +0200

      iommu/amd: Fix unity mapping initialization race

  == Testing ==
  HP confirms their testing shows these patches resolves the issue on several test machines.

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