[Qemu-devel] [PATCH v3 00/12] icount and misc MTTCG fixes for 2.9-rc4

[Alex Bennée]

Hi,

This doesn't change much from v2 earlier this week:

  https://lists.nongnu.org/archive/html/qemu-devel/2017-04/msg00661.html

There was a minor improvement to the cpu_update_icount to not use a
potentially expensive atomic_add (which is CST) when you can get away
with weaker semantics with a single writer.

I've also fixed a compile error on 32bit guests. It only falls back to
non-atomic code if CONFIG_ATOMIC64 is not set which isn't the case for
ARMv7 as it can use load/store-exclusive pair to do the operation.
This does require using the __no_check atomic variants though.

I still plan to roll a pull-request on Monday and get it sent to Peter
in good time for cutting -rc4.

Cheers,


Alex Bennée (12):
  scripts/qemugdb/mtree.py: fix up mtree dump
  scripts/qemu-gdb/timers.py: new helper to dump timer state
  scripts/replay-dump.py: replay log dumper
  target/i386/misc_helper: wrap BQL around another IRQ generator
  cpus: remove icount handling from qemu_tcg_cpu_thread_fn
  cpus: check cpu->running in cpu_get_icount_raw()
  cpus: move icount preparation out of tcg_exec_cpu
  cpus: don't credit executed instructions before they have run
  cpus: introduce cpu_update_icount helper
  cpu-exec: update icount after each TB_EXIT
  cpus: call cpu_update_icount on read
  replay: assert time only goes forward

 cpu-exec.c                |  14 +--
 cpus.c                    | 109 ++++++++++++++-----
 include/qemu/timer.h      |   1 +
 include/qom/cpu.h         |   1 +
 replay/replay-internal.c  |   4 +
 replay/replay.c           |   4 +
 scripts/qemu-gdb.py       |   3 +-
 scripts/qemugdb/mtree.py  |  12 +-
 scripts/qemugdb/timers.py |  54 +++++++++
 scripts/replay-dump.py    | 272 ++++++++++++++++++++++++++++++++++++++++++++++
 target/i386/misc_helper.c |   3 +
 11 files changed, 437 insertions(+), 40 deletions(-)
 create mode 100644 scripts/qemugdb/timers.py
 create mode 100755 scripts/replay-dump.py

-- 
2.11.0