Merge remote-tracking branch 'remotes/dgibson/tags/ppc-for-2.10-20170717' into staging

ppc patch queue 2017-07-17

This pull requests supersedes the one from 2017-07-14.  That one had a
couple of subtle regressions: there was a build error for mingw32, and
an instance_size which was theoretically wrong everywhere, but only
actually bit on the Travis OSX build.

There are two major batches in this set, rather than the usual
collection of assorted fixes.

    * More DRC cleanup.  This gets the state management into a state
      which should fix many of the hotplug+migration problems we've
      had.  Plus it gets the migration stream format into something
      well defined and pretty minimal which we can reasonably support
      into the future.

    * Hashed Page Table resizing.  It's been a while since this was
      posted, but it's been through several previous rounds of review.
      The kernel parts (both guest and host) are merged in 4.11, so
      this is the only remaining piece left to allow resizing of the
      HPT in a running guest.

There are also a handful of unrelated fixes.

# gpg: Signature made Mon 17 Jul 2017 07:36:52 BST
# gpg:                using RSA key 0x6C38CACA20D9B392
# gpg: Good signature from "David Gibson <david@gibson.dropbear.id.au>"
# gpg:                 aka "David Gibson (Red Hat) <dgibson@redhat.com>"
# gpg:                 aka "David Gibson (ozlabs.org) <dgibson@ozlabs.org>"
# gpg:                 aka "David Gibson (kernel.org) <dwg@kernel.org>"
# Primary key fingerprint: 75F4 6586 AE61 A66C C44E  87DC 6C38 CACA 20D9 B392

* remotes/dgibson/tags/ppc-for-2.10-20170717: (21 commits)
  target/ppc: fix CPU hotplug when radix is enabled (TCG)
  spapr: fix memory leak in spapr_core_pre_plug()
  pseries: Allow HPT resizing with KVM
  pseries: Use smaller default hash page tables when guest can resize
  pseries: Enable HPT resizing for 2.10
  pseries: Implement HPT resizing
  pseries: Stubs for HPT resizing
  ppc/pnv: Remove unused XICSState reference
  spapr: fix potential memory leak in spapr_core_plug()
  spapr: Implement DR-indicator for physical DRCs only
  spapr: Remove sPAPRConfigureConnectorState sub-structure
  spapr: Consolidate DRC state variables
  spapr: Cleanups relating to DRC awaiting_release field
  spapr: Refactor spapr_drc_detach()
  spapr: Abort on delete failure in spapr_drc_release()
  spapr: Simplify unplug path
  spapr: Remove 'awaiting_allocation' DRC flag
  spapr: Treat devices added before inbound migration as coldplugged
  spapr: Minor cleanups to events handling
  spapr: migrate pending_events of spapr state
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

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