[Qemu-devel] [PATCH 0/6] Device state visualization reloaded

[Jan Kiszka <jan.kiszka@siemens.com>]

More than one year ago I posted some patches to add a monitor command
callend device_show. The purpose of that command is to dump the state of
some qdev device based on its vmstate.

To improve the usability of that interface, the previous series also
tried to create a canonical qdev tree path name format and even added
monitor command expansion. That format created quite a few discussions,
and we never came to some conclusion.

As device_show is still a useful tool for debugging but qdev structuring
and addressing may significantly change in the near future, I decided to
reanimate those patches while avoiding almost any change of the
addressing scheme. The only one I propose is automatic ID assignment for
anonymous devices so that any qdev device is in principle addressable
(e.g. APIC and IO-APIC on x86).

As back then, device_show remains HMP-only to avoid any stable ABI
issues around QMP.

CC: Luiz Capitulino <lcapitulino@redhat.com>
CC: Markus Armbruster <armbru@redhat.com>

Jan Kiszka (6):
  monitor: return length of printed string via monitor_[v]printf
  Add base64 encoder/decoder
  QMP: Reserve namespace for complex object classes
  QMP: Add QBuffer
  monitor: Add basic device state visualization
  qdev: Generate IDs for anonymous devices

 Makefile             |    2 +-
 Makefile.objs        |    4 +-
 QMP/qmp-spec.txt     |   24 ++++-
 base64.c             |  202 +++++++++++++++++++++++++++++++++++++
 base64.h             |   19 ++++
 check-qbuffer.c      |  172 ++++++++++++++++++++++++++++++++
 configure            |    2 +-
 hmp-commands.hx      |   16 +++
 hw/hw.h              |    2 +
 hw/qdev-properties.c |    2 +-
 hw/qdev.c            |  271 ++++++++++++++++++++++++++++++++++++++++++++++++--
 hw/qdev.h            |    3 +
 monitor.c            |   23 +++--
 monitor.h            |    4 +-
 qbuffer.c            |  117 ++++++++++++++++++++++
 qbuffer.h            |   33 ++++++
 qemu-tool.c          |    6 +-
 qerror.c             |    4 +
 qerror.h             |    3 +
 qjson.c              |   15 +++
 qobject.h            |    1 +
 21 files changed, 894 insertions(+), 31 deletions(-)
 create mode 100644 base64.c
 create mode 100644 base64.h
 create mode 100644 check-qbuffer.c
 create mode 100644 qbuffer.c
 create mode 100644 qbuffer.h

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1.7.3.4