On 11/01/2018 09:24, Pavel Dovgalyuk wrote: > Accidentally sent draft version of patches to the mailing list. > Please consider this one as the correct one. > > This set of patches includex fixes from Alex Bennée for fixing > BQL and replay locks after inventing the MTTCG. It also includes some > additional replay patches that makes this set of fixes working. > It is also fixes some vmstate creation (and loading) issues > in record/replay modes: > - VM start/stop fixes in replay mode > - overlay creation for blkreplay filter > - fixes for vmstate save/load in record/replay mode > - fixes for host clock vmstate > - fixes for icount timers vmstate > > There is also a set of helper scripts written by Alex Bennée > for debugging the record/replay code.
For now, I'm applying patches 13, 24-26 and 28. Paolo > > v3 changes: > - removed upstreamed patches > - fixed bug with recursive checkpoints > - fixed bug with icount warp checkpoint > > v2 changes: > - updated lock/unlock logic (as suggested by Paolo Bonzini) > - updated cpu execution loop to avoid races in setting/resetting exit > request (as suggested by Paolo Bonzini) > - minor changes > > --- > > Alex Bennée (12): > target/arm/arm-powertctl: drop BQL assertions > cpus: push BQL lock to qemu_*_wait_io_event > cpus: only take BQL for sleeping threads > replay/replay.c: bump REPLAY_VERSION again > replay/replay-internal.c: track holding of replay_lock > replay: make locking visible outside replay code > replay: push replay_mutex_lock up the call tree > scripts/qemu-gdb: add simple tcg lock status helper > util/qemu-thread-*: add qemu_lock, locked and unlock trace events > scripts/analyse-locks-simpletrace.py: script to analyse lock times > scripts/replay-dump.py: replay log dumper > scripts/qemu-gdb/timers.py: new helper to dump timer state > > Pavel Dovgalyuk (18): > hpet: recover timer offset correctly > cpu: flush TB cache when loading VMState > This patch adds a condition before overwriting exception_index fields. > block: implement bdrv_snapshot_goto for blkreplay > blkreplay: create temporary overlay for underlaying devices > replay: disable default snapshot for record/replay > replay: fix processing async events > replay: fixed replay_enable_events > replay: fix save/load vm for non-empty queue > replay: added replay log format description > replay: make safe vmstop at record/replay > replay: save prior value of the host clock > icount: fixed saving/restoring of icount warp timers > replay: don't destroy mutex at exit > replay: check return values of fwrite > replay: avoid recursive call of checkpoints > replay: improve replay performance > replay: don't process async events when warping the clock > > > accel/kvm/kvm-all.c | 4 > accel/tcg/cpu-exec.c | 5 - > block/blkreplay.c | 73 ++++++++ > cpus-common.c | 13 + > cpus.c | 184 +++++++++++++++----- > docs/replay.txt | 91 ++++++++++ > exec.c | 1 > hw/timer/hpet.c | 30 +++ > include/hw/compat.h | 6 + > include/qemu/thread.h | 19 ++ > include/qemu/timer.h | 14 ++ > include/sysemu/replay.h | 22 ++ > migration/savevm.c | 13 + > replay/replay-char.c | 21 +- > replay/replay-events.c | 30 +-- > replay/replay-internal.c | 48 +++++ > replay/replay-internal.h | 9 + > replay/replay-snapshot.c | 9 + > replay/replay-time.c | 10 + > replay/replay.c | 75 ++++++-- > scripts/analyse-locks-simpletrace.py | 99 +++++++++++ > scripts/qemu-gdb.py | 4 > scripts/qemugdb/tcg.py | 46 +++++ > scripts/qemugdb/timers.py | 54 ++++++ > scripts/replay-dump.py | 308 > ++++++++++++++++++++++++++++++++++ > stubs/replay.c | 16 ++ > target/arm/arm-powerctl.c | 8 - > target/i386/hax-all.c | 2 > util/main-loop.c | 17 +- > util/qemu-thread-posix.c | 21 +- > util/qemu-timer.c | 12 + > util/trace-events | 7 - > vl.c | 12 + > 33 files changed, 1112 insertions(+), 171 deletions(-) > create mode 100755 scripts/analyse-locks-simpletrace.py > create mode 100644 scripts/qemugdb/tcg.py > create mode 100644 scripts/qemugdb/timers.py > create mode 100755 scripts/replay-dump.py >
