[RFC PATCH 00/10] ppc/pnv: Better big-core model, lpar-per-core, PC unit

[Nicholas Piggin]

Primary motivation for this series is to improve big-core support.
Other things like SPR indirect, timebase state, PC xscom, are required
for minimal big core support.

I'm still not 100% happy with the big-core topology model after this.
Maybe one day we add pnv big core and pnv small core structures. But
nothing is completely clean because big core mode still has certain
small core restrictions. I think for now we take a bit of mostly
abstracted ugliness in TCG code for the benefit of not spreading
hacks through pervasive (xscom) core addressing.

After this series, power9 and power10 get through skiboot/Linux boot
in SMT8 big-core mode. Not all big core registers are modeled
exactly (some are not shared between small core halves), but that
mostly doesn't matter for OPAL and it can be improved later.

Thanks,
Nick

Nicholas Piggin (10):
  ppc/pnv: Add pointer from PnvCPUState to PnvCore
  ppc/pnv: Move timebase state into PnvCore
  target/ppc: Improve SPR indirect registers
  ppc/pnv: specialise init for powernv8/9/10 machines
  ppc/pnv: Extend chip_pir class method to TIR as well
  ppc: Add a core_index to CPUPPCState for SMT vCPUs
  target/ppc: Add helpers to check for SMT sibling threads
  ppc/pnv: Invert the design for big-core machine modelling
  ppc/pnv: Implement POWER10 PC xscom registers for direct controls
  ppc/pnv: Add an LPAR per core machine option

 include/hw/core/cpu.h        |   8 +
 include/hw/ppc/pnv.h         |   6 +
 include/hw/ppc/pnv_chip.h    |   3 +-
 include/hw/ppc/pnv_core.h    |  31 ++++
 target/ppc/cpu.h             |  37 ++---
 hw/ppc/pnv.c                 | 297 ++++++++++++++++++++++++++++-------
 hw/ppc/pnv_chiptod.c         |   6 +-
 hw/ppc/pnv_core.c            | 129 +++++++++++++--
 hw/ppc/spapr_cpu_core.c      |   7 +
 system/cpus.c                |  10 ++
 target/ppc/cpu_init.c        |  26 +--
 target/ppc/excp_helper.c     |  16 +-
 target/ppc/misc_helper.c     |  98 ++++++------
 target/ppc/timebase_helper.c |  82 +++++-----
 14 files changed, 548 insertions(+), 208 deletions(-)

-- 
2.43.0