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[Launchpad Bug Tracker <1831940@xxxxxxxxxxxxxxxxxx>]

This bug was fixed in the package linux-aws - 4.15.0-1044.46

---------------
linux-aws (4.15.0-1044.46) bionic; urgency=medium

  * linux-aws: 4.15.0-1044.46 -proposed tracker (LP: #1834930)

  * hibernation support for linux-aws (LP: #1831940)
    - UBUNTU SAUCE [aws]: block: xen-blkfront: consider new dom0 features on
      restore
    - UBUNTU SAUCE [aws]: ACPICA: Enable sleep button on ACPI legacy wake
    - UBUNTU SAUCE [aws]: xen: restore pirqs on resume from hibernation.
    - UBUNTU SAUCE [aws]: xen: Only restore the ACPI SCI interrupt in
      xen_restore_pirqs.
    - mm: rid swapoff of quadratic complexity
    - sched/wait: Introduce wait_var_event()
    - mm: swapoff: shmem_unuse() stop eviction without igrab()
    - UBUNTU SAUCE [aws]: mm: aggressive swapoff
    - netlink: Don't shift on 64 for ngroups

 -- Kleber Sacilotto de Souza <kleber.souza@xxxxxxxxxxxxx>  Thu, 04 Jul
2019 14:47:13 +0200

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

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https://bugs.launchpad.net/bugs/1831940

Title:
  hibernation support for linux-aws

Status in linux-aws package in Ubuntu:
  Fix Committed
Status in linux-aws source package in Xenial:
  Fix Committed
Status in linux-aws source package in Bionic:
  Fix Released

Bug description:
  Additional AWS-specific and mainline patches are required to support
  hibernation across the various types of AWS instances.

  The following patch sets for linux-aws-xenial and linux-aws-bionic
  provide the necessary functionality, and should only impact the
  hibernation and resume paths.

  [linux-aws-xenial]

  UBUNTU SAUCE [aws]: block: xen-blkfront: consider new dom0 features on restore
  UBUNTU SAUCE [aws]: ACPICA: Enable sleep button on ACPI legacy wake
  UBUNTU SAUCE [aws]: xen: restore pirqs on resume from hibernation.
  UBUNTU SAUCE [aws]: xen: Only restore the ACPI SCI interrupt in xen_restore_pirqs.
  radix-tree: delete radix_tree_locate_item()
  mm: rid swapoff of quadratic complexity
  sched/wait: Fix abort_exclusive_wait(), it should pass TASK_NORMAL to wake_up()
  sched/wait: Avoid abort_exclusive_wait() in ___wait_event()
  sched/wait: Avoid abort_exclusive_wait() in __wait_on_bit_lock()
  sched/wait: Introduce init_wait_entry()
  sched/wait: Standardize wait_bit_queue naming
  sched/wait: Introduce wait_var_event()
  mm: swapoff: shmem_unuse() stop eviction without igrab()
  UBUNTU SAUCE [aws]: mm: aggressive swapoff
  UBUNTU SAUCE [aws]: PM / hibernate: make sure pm_async is always disabled
  NVMe: Allow request merges
  PM / hibernate: Do not free preallocated safe pages during image restore
  PM / hibernate: Recycle safe pages after image restoration
  PM / hibernate: Simplify mark_unsafe_pages()
  UBUNTU: [Config] aws: disable CONFIG_TRANSPARENT_HUGEPAGE_ALWAYS
  UBUNTU SAUCE [aws] PM / hibernate: set image_size to total RAM size by default
  UBUNTU SAUCE [aws] PM / hibernate: reduce memory pressure during image writing
  UBUNTU SAUCE [aws] mm, page_alloc: disable fair zone allocation policy on hibernate

  
  [linux-aws-bionic]

  UBUNTU SAUCE [aws]: block: xen-blkfront: consider new dom0 features on restore
  UBUNTU SAUCE [aws]: ACPICA: Enable sleep button on ACPI legacy wake
  UBUNTU SAUCE [aws]: xen: restore pirqs on resume from hibernation.
  UBUNTU SAUCE [aws]: xen: Only restore the ACPI SCI interrupt in xen_restore_pirqs.
  mm: rid swapoff of quadratic complexity
  sched/wait: Introduce wait_var_event()
  mm: swapoff: shmem_unuse() stop eviction without igrab()
  UBUNTU SAUCE [aws]: mm: aggressive swapoff
  netlink: Don't shift on 64 for ngroups

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