[RFC PATCH 00/12] Enable PM hibernation on guest VMs

[Anchal Agarwal]

Hello,
I am sending out a series of patches that implements guest
PM hibernation. These guests are running on xen hypervisor.
The patches had been tested against mainstream kernel and latest
xen version-4.11. EC2 instance hibernation feature is provided to
the AWS EC2 customers. PM hibernation uses swap space where
hibernation image is stored and restored from. I would like
the community to review and provide some feedback on the patch 
series and if they look good, merge them into 4.17 kernel.

Aleksei Besogonov (1):
  PM / hibernate: update the resume offset on SNAPSHOT_SET_SWAP_AREA

Anchal Agarwal (1):
  x86/xen: Introduce new function to map HYPERVISOR_shared_info on
    Resume

Munehisa Kamata (10):
  xen/manage: keep track of the on-going suspend mode
  xen/manage: introduce helper function to know the on-going suspend
    mode
  xenbus: add freeze/thaw/restore callbacks support
  x86/xen: add system core suspend and resume callbacks
  xen-blkfront: add callbacks for PM suspend and hibernation
  xen-netfront: add callbacks for PM suspend and hibernation support
  xen-time-introduce-xen_-save-restore-_steal_clock
  x86/xen: save and restore steal clock
  xen/events: add xen_shutdown_pirqs helper function
  x86/xen: close event channels for PIRQs in system core suspend
    callback

 arch/x86/xen/enlighten_hvm.c      |   8 ++
 arch/x86/xen/suspend.c            |  66 ++++++++++++++++
 arch/x86/xen/time.c               |   3 +
 arch/x86/xen/xen-ops.h            |   1 +
 drivers/block/xen-blkfront.c      | 158 ++++++++++++++++++++++++++++++++++++--
 drivers/net/xen-netfront.c        |  97 ++++++++++++++++++++++-
 drivers/xen/events/events_base.c  |  12 +++
 drivers/xen/manage.c              |  73 ++++++++++++++++++
 drivers/xen/time.c                |  28 ++++++-
 drivers/xen/xenbus/xenbus_probe.c | 102 ++++++++++++++++++++----
 include/xen/events.h              |   1 +
 include/xen/xen-ops.h             |   8 ++
 include/xen/xenbus.h              |   3 +
 kernel/power/user.c               |   6 +-
 14 files changed, 540 insertions(+), 26 deletions(-)

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2.13.6