Merge tag 'pull-ppc-20230626' of https://github.com/legoater/qemu into staging

ppc queue:

* New maintainers
* Nested implementation cleanups
* Various cleanups of the CPU implementation
* SMT support for pseries
* Improvements of the XIVE2 TIMA modeling
* Extra avocado tests for pseries

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* tag 'pull-ppc-20230626' of https://github.com/legoater/qemu: (30 commits)
  tests/avocado: ppc test VOF bios Linux boot
  pnv/xive2: Check TIMA special ops against a dedicated array for P10
  pnv/xive2: Add a get_config() method on the presenter class
  tests/avocado: Add ppc64 pseries multiprocessor boot tests
  tests/avocado: boot ppc64 pseries to Linux VFS mount
  spapr: TCG allow up to 8-thread SMT on POWER8 and newer CPUs
  hw/ppc/spapr: Test whether TCG is enabled with tcg_enabled()
  target/ppc: Add msgsnd/p and DPDES SMT support
  target/ppc: Add support for SMT CTRL register
  target/ppc: Add initial flags and helpers for SMT support
  target/ppc: Fix sc instruction handling of LEV field
  target/ppc: Better CTRL SPR implementation
  target/ppc: Add ISA v3.1 LEV indication in SRR1 for system call interrupts
  target/ppc: Implement HEIR SPR
  target/ppc: Add SRR1 prefix indication to interrupt handlers
  target/ppc: Change partition-scope translate interface
  target/ppc: Fix instruction loading endianness in alignment interrupt
  ppc/spapr: Move spapr nested HV to a new file
  ppc/spapr: load and store l2 state with helper functions
  ppc/spapr: Add a nested state struct
  ...

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>