[PATCH RFC 00/11] vl: Explore redesign of startup

[Markus Armbruster <armbru@redhat.com>]

These patches are meant to back the memo "Redesign of QEMU startup &
initial configuration" I just posted.  Read that first, please.

My running example for initial configuration via QMP is cold plug.  It
works at the end of the series.

I'm taking a number of shortcuts:

* I hack up qemu-system-FOO instead of creating an alternate program.
  Just so I don't have to mess with Meson.

* Instead of creating QAPI/CLI infrastructure, I use QMP as CLI: each
  argument is interpreted as QMP command.  This is certainly bad CLI,
  but should suffice to demonstrate things.

* Instead of feeding the CLI's QMP commands to the main loop via a
  quasi-monitor, I send them directly to the QMP dispatcher.  Simpler,
  but I'm not sure that's going to work for all QMP commands we want.

* Phase advance is by explicit command @until-phase only.  Carelessly
  named.  We may want some other commands to advance the phase
  automatically.

* There are no safeguards.  You *can* run QMP commands in phases where
  they crash.  Data corruption is left as an exercise for the reader.

* Possibly more I can't remember right now :)

Markus Armbruster (11):
  vl: Cut off the CLI with an axe
  vl: Drop x-exit-preconfig
  vl: Hardcode a QMP monitor on stdio for now
  vl: Hardcode a VGA device for now
  vl: Demonstrate (bad) CLI wrapped around QMP
  vl: Factor qemu_until_phase() out of qemu_init()
  vl: Implement qemu_until_phase() running from arbitrary phase
  vl: Implement qemu_until_phase() running to arbitrary phase
  vl: New QMP command until-phase
  vl: Disregard lack of 'allow-preconfig': true
  vl: Enter main loop in phase @machine-initialized

 qapi/misc.json             |   27 -
 qapi/phase.json            |   31 +
 qapi/qapi-schema.json      |    1 +
 include/hw/qdev-core.h     |   31 -
 hw/core/machine-qmp-cmds.c |    1 +
 hw/core/machine.c          |    1 +
 hw/core/qdev.c             |    7 +
 hw/pci/pci.c               |    1 +
 hw/usb/core.c              |    1 +
 hw/virtio/virtio-iommu.c   |    1 +
 monitor/hmp-cmds.c         |    8 -
 monitor/hmp.c              |    1 +
 softmmu/qdev-monitor.c     |    3 +
 softmmu/vl.c               | 2833 ++----------------------------------
 ui/console.c               |    1 +
 MAINTAINERS                |    1 +
 hmp-commands.hx            |   18 -
 qapi/meson.build           |    1 +
 18 files changed, 180 insertions(+), 2788 deletions(-)
 create mode 100644 qapi/phase.json

-- 
2.31.1