[PATCH 0/4] ppc/pnv: SMT support for powernv

[Nicholas Piggin <npiggin@gmail.com>]

These patches implement enough to install a distro, boot, run SMP KVM
guests with libvirt with good performance using MTTCG (as reported by
Cedric).

There are a few more SPRs that need to be done, and per-LPAR SPRs are
mostly not annotated yet so it can't run in 1 LPAR mode. But those can
be added in time, it will take a bit of time to get everything exactly
as hardware does so I consider this good enough to run common
software usefully.

Thanks Joel and Cedric for reviews and testing.

Since RFC:
- Rebased against ppc-next (no conflicts vs upstream anyway).
- Add patch 4 avocado boot test with SMT, as was added with pseries SMT.
- Renamed POWERPC_FLAG_1LPAR to POWERPC_FLAG_SMT_1LPAR since it implies
  SMT.
- Fixed typos, patch 1, 3 changelogs improvement (hopefully).

Thanks,
Nick

Nicholas Piggin (4):
  target/ppc: Add LPAR-per-core vs per-thread mode flag
  target/ppc: SMT support for the HID SPR
  ppc/pnv: SMT support for powernv
  tests/avocado: Add powernv machine test script

 hw/ppc/pnv.c                 | 12 +++++
 hw/ppc/pnv_core.c            | 13 +++---
 hw/ppc/spapr_cpu_core.c      |  2 +
 target/ppc/cpu.h             |  3 ++
 target/ppc/cpu_init.c        | 14 +++++-
 target/ppc/helper.h          |  1 +
 target/ppc/misc_helper.c     | 21 +++++++++
 target/ppc/spr_common.h      |  1 +
 target/ppc/translate.c       | 32 ++++++++++++--
 tests/avocado/ppc_powernv.py | 86 ++++++++++++++++++++++++++++++++++++
 10 files changed, 173 insertions(+), 12 deletions(-)
 create mode 100644 tests/avocado/ppc_powernv.py

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2.40.1