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[PATCH v9 00/10] PMU-EBB support for PPC64 TCG
From: |
Daniel Henrique Barboza |
Subject: |
[PATCH v9 00/10] PMU-EBB support for PPC64 TCG |
Date: |
Wed, 1 Dec 2021 12:17:24 -0300 |
Hi,
In this new version the most significant change is in patch 6,
where a new hflag allows us to not call the instruction helper
inside translate.c unless we're absolutely certain that there
is an instruction count event being sampled and active in the
PMU. This change turned out to be a big boost in performance
in the PMU emulation overall, most notably when dealing with
cycle events that were calling the helper needlessly.
This and all other changes were suggested by David in his review
of the previous version.
Changes from v8:
- patch 5:
* overflow timer of PMC5 is now marked as NULL instead of absent
- patch 6:
* new hflags HFLAGS_INSN_CNT added to track instruction count state
* previous HFLAGS_MMCR0FC flag removed
* pmu_count_insns() now works partially with user mode
- patch 9:
* fixed interrupt comment
- v8 link: https://lists.gnu.org/archive/html/qemu-devel/2021-11/msg05160.html
Daniel Henrique Barboza (9):
target/ppc: introduce PMUEventType and PMU overflow timers
target/ppc: PMU basic cycle count for pseries TCG
target/ppc: PMU: update counters on PMCs r/w
target/ppc: PMU: update counters on MMCR1 write
target/ppc: enable PMU counter overflow with cycle events
target/ppc: enable PMU instruction count
target/ppc/power8-pmu.c: add PM_RUN_INST_CMPL (0xFA) event
PPC64/TCG: Implement 'rfebb' instruction
target/ppc/excp_helper.c: EBB handling adjustments
Gustavo Romero (1):
target/ppc: PMU Event-Based exception support
hw/ppc/spapr_cpu_core.c | 1 +
target/ppc/cpu.h | 60 +++-
target/ppc/cpu_init.c | 46 ++-
target/ppc/excp_helper.c | 93 ++++++
target/ppc/helper.h | 6 +
target/ppc/helper_regs.c | 7 +
target/ppc/insn32.decode | 5 +
target/ppc/meson.build | 1 +
target/ppc/power8-pmu-regs.c.inc | 69 ++++-
target/ppc/power8-pmu.c | 386 +++++++++++++++++++++++++
target/ppc/power8-pmu.h | 26 ++
target/ppc/spr_tcg.h | 5 +
target/ppc/translate.c | 78 +++++
target/ppc/translate/branch-impl.c.inc | 33 +++
14 files changed, 801 insertions(+), 15 deletions(-)
create mode 100644 target/ppc/power8-pmu.c
create mode 100644 target/ppc/power8-pmu.h
create mode 100644 target/ppc/translate/branch-impl.c.inc
--
2.31.1
- [PATCH v9 00/10] PMU-EBB support for PPC64 TCG,
Daniel Henrique Barboza <=
- [PATCH v9 01/10] target/ppc: introduce PMUEventType and PMU overflow timers, Daniel Henrique Barboza, 2021/12/01
- [PATCH v9 04/10] target/ppc: PMU: update counters on MMCR1 write, Daniel Henrique Barboza, 2021/12/01
- [PATCH v9 03/10] target/ppc: PMU: update counters on PMCs r/w, Daniel Henrique Barboza, 2021/12/01
- [PATCH v9 02/10] target/ppc: PMU basic cycle count for pseries TCG, Daniel Henrique Barboza, 2021/12/01
- [PATCH v9 05/10] target/ppc: enable PMU counter overflow with cycle events, Daniel Henrique Barboza, 2021/12/01
- [PATCH v9 06/10] target/ppc: enable PMU instruction count, Daniel Henrique Barboza, 2021/12/01
- [PATCH v9 07/10] target/ppc/power8-pmu.c: add PM_RUN_INST_CMPL (0xFA) event, Daniel Henrique Barboza, 2021/12/01
- [PATCH v9 08/10] PPC64/TCG: Implement 'rfebb' instruction, Daniel Henrique Barboza, 2021/12/01
- [PATCH v9 09/10] target/ppc: PMU Event-Based exception support, Daniel Henrique Barboza, 2021/12/01