Merge remote-tracking branch 'remotes/dgibson/tags/ppc-for-2.9-20170303' into staging

ppc patch queuye for 2017-03-03

This will probably be my last pull request before the hard freeze.  It
has some new work, but that has all been posted in draft before the
soft freeze, so I think it's reasonable to include in qemu-2.9.

This batch has:
    * A substantial amount of POWER9 work
        * Implements the legacy (hash) MMU for POWER9
	* Some more preliminaries for implementing the POWER9 radix
          MMU
	* POWER9 has_work
	* Basic POWER9 compatibility mode handling
	* Removal of some premature tests
    * Some cleanups and fixes to the existing MMU code to make the
      POWER9 work simpler
    * A bugfix for TCG multiply adds on power
    * Allow pseries guests to access PCIe extended config space

This also includes a code-motion not strictly in ppc code - moving
getrampagesize() from ppc code to exec.c.  This will make some future
VFIO improvements easier, Paolo said it was ok to merge via my tree.

# gpg: Signature made Fri 03 Mar 2017 03:20:36 GMT
# 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-2.9-20170303:
  target/ppc: rewrite f[n]m[add,sub] using float64_muladd
  spapr: Small cleanup of PPC MMU enums
  spapr_pci: Advertise access to PCIe extended config space
  target/ppc: Rework hash mmu page fault code and add defines for clarity
  target/ppc: Move no-execute and guarded page checking into new function
  target/ppc: Add execute permission checking to access authority check
  target/ppc: Add Instruction Authority Mask Register Check
  hw/ppc/spapr: Add POWER9 to pseries cpu models
  target/ppc/POWER9: Add cpu_has_work function for POWER9
  target/ppc/POWER9: Add POWER9 pa-features definition
  target/ppc/POWER9: Add POWER9 mmu fault handler
  target/ppc: Don't gen an SDR1 on POWER9 and rework register creation
  target/ppc: Add patb_entry to sPAPRMachineState
  target/ppc/POWER9: Add POWERPC_MMU_V3 bit
  powernv: Don't test POWER9 CPU yet
  exec, kvm, target-ppc: Move getrampagesize() to common code
  target/ppc: Add POWER9/ISAv3.00 to compat_table

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

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