[PATCH v3 0/4] Add BHRB Facility Support

[Glenn Miles]

This is a series of patches for adding support for the Branch History
Rolling Buffer (BHRB) facility.  This was added to the Power ISA
starting with version 2.07.  Changes were subsequently made in version
3.1 to limit BHRB recording to instructions run in problem state only
and to add a control bit to disable recording (MMCRA[BHRBRD]).

Version 3 of this series disables branch recording on P8 and P9 due
to a drop in performance caused by recording branches outside of
problem state.

Glenn Miles (4):
  target/ppc: Add new hflags to support BHRB
  target/ppc: Add recording of taken branches to BHRB
  target/ppc: Add clrbhrb and mfbhrbe instructions
  target/ppc: Add migration support for BHRB

 target/ppc/cpu.h                       |  24 ++++++
 target/ppc/cpu_init.c                  |  39 +++++++++-
 target/ppc/helper.h                    |   5 ++
 target/ppc/helper_regs.c               |  35 +++++++++
 target/ppc/insn32.decode               |   8 ++
 target/ppc/machine.c                   |  23 +++++-
 target/ppc/misc_helper.c               |  46 +++++++++++
 target/ppc/power8-pmu-regs.c.inc       |   5 ++
 target/ppc/power8-pmu.c                |  48 +++++++++++-
 target/ppc/power8-pmu.h                |  11 ++-
 target/ppc/spr_common.h                |   1 +
 target/ppc/translate.c                 | 101 +++++++++++++++++++++++--
 target/ppc/translate/bhrb-impl.c.inc   |  43 +++++++++++
 target/ppc/translate/branch-impl.c.inc |   2 +-
 14 files changed, 374 insertions(+), 17 deletions(-)
 create mode 100644 target/ppc/translate/bhrb-impl.c.inc

-- 
2.31.1