[Qemu-devel] [PATCH v8 0/9] replay additions

[Pavel Dovgalyuk]

This set of patches includes several fixes for replay and vmstate.

This patches add rrsnapshot option for icount. rrshapshot option creates
start snapshot at record and loads it at replay. It allows preserving
the state of disk images used by virtual machine. This vm state can also
use used to roll back the execution while replaying.

With these patches operations with audio devices can also be recorded
and replayed. All interactions with passthrough audio (including
microphone input) are recorded automatically when -soundhw is specified
at the command line.

This set of patches includes fixes and additions for icount and
record/replay implementation:
 - VM start/stop in replay mode
 - overlay creation for blkreplay filter
 - rrsnapshot option for record/replay
 - vmstate fix for integratorcp ARM platform
 - vmstate fixes for apic and rtc
 - fixes for icount record/replay mode
 - record/replay for audio devices

v8 changes:
 - Refined replay exception processing (as suggested by Paolo Bonzini)
 - Saving/restoring static variable for APIC only once (as suggested by Paolo 
Bonzini)
 - Removed already queued patches
 - Minor fixes

v7 changes:
 - Fixed exception replaying when TB cache is full and
   when tb_find is called when there are no instructions about to execute
 - Added record/replay for audio devices

v6 changes:
 - Added overlay creation for blkreplay driver
 - Fixed vmstate loading for apic and rtc
 - Fixed instruction counting for apic instruction patching

v5 changes:
 - Recording is stopped when initial snapshot cannot be created
 - Minor changes

v4 changes:
 - Overlay option is removed from blkreplay driver (as suggested by Paolo 
Bonzini)
 - Minor changes

v3 changes:
 - Added rrsnapshot option for specifying the initial snapshot name (as 
suggested by Paolo Bonzini)
 - Minor changes

---

Pavel Dovgalyuk (9):
      replay: exception replay fix
      icount: exit cpu loop on expire
      apic: save apic_delivered flag
      integratorcp: adding vmstate for save/restore
      block: implement bdrv_snapshot_goto for blkreplay
      blkreplay: create temporary overlay for underlaying devices
      replay: disable default snapshot for record/replay
      audio: make audio poll timer deterministic
      replay: add record/replay for audio passthrough


 audio/audio.c                   |   15 +++++--
 audio/audio.h                   |    5 ++
 audio/mixeng.c                  |   31 ++++++++++++++
 block/blkreplay.c               |   84 +++++++++++++++++++++++++++++++++++++++
 cpu-exec.c                      |   24 +++++++++--
 docs/replay.txt                 |    7 +++
 hw/arm/integratorcp.c           |   62 +++++++++++++++++++++++++++++
 hw/intc/apic_common.c           |   37 +++++++++++++++++
 include/hw/i386/apic_internal.h |    2 +
 include/sysemu/replay.h         |    7 +++
 replay/Makefile.objs            |    1 
 replay/replay-audio.c           |   79 +++++++++++++++++++++++++++++++++++++
 replay/replay-internal.h        |    4 ++
 stubs/replay.c                  |    1 
 translate-all.c                 |    3 +
 vl.c                            |   10 ++++-
 16 files changed, 361 insertions(+), 11 deletions(-)
 create mode 100644 replay/replay-audio.c

-- 
Pavel Dovgalyuk