[Qemu-devel] [PATCH 0/8] virtio-console: Move to qdev, multiple devices, generic ports

[Amit Shah]

Hello all,

In this series I've removed the buffering that happened in the host
and ack the amount of data that ports actually consume. This basically
removes the older patch 5/8 that introduced buffering and throttling.

Other changes include addition of patch 8: MSI support and ensuring we
don't crash in the event we don't have chardevs opened and guest
writes out to virtio-consoles.

Obligatory disclaimer:
This series splits up the patches by functionality. Note, however,
that patches 2-5 introduce some functionality that's advertised to the
guest as having to work all at once or not at all. Also, the savevm
version is bumped only once but save/restore state is added in each of
the patches. They are split only for easier reviewability.

The older virtio-console.c file is completely removed and a new
virtio-serial.c is introduced so that reviewing is easier. I can send a
later patch to rename virtio-serial.c back to virtio-console.c.


Amit Shah (8):
  virtio: Remove duplicate macro definition for max. virtqueues, bump
    up the max
  virtio-console: qdev conversion, new virtio-serial-bus
  virtio-serial-bus: Maintain guest and host port open/close state
  virtio-serial-bus: Add a port 'name' property for port discovery in
    guests
  virtio-serial-bus: Add ability to hot-unplug ports
  virtio-serial: Add a 'virtserialport' device for generic serial port
    support
  Move virtio-serial to Makefile.objs
  virtio-serial: Use MSI vectors for port virtqueues

 Makefile.objs          |    2 +-
 Makefile.target        |    2 +-
 hw/pc.c                |   11 +-
 hw/ppc440_bamboo.c     |    7 -
 hw/qdev.c              |   10 +-
 hw/s390-virtio-bus.c   |   17 +-
 hw/s390-virtio-bus.h   |    2 +
 hw/s390-virtio.c       |    8 -
 hw/virtio-console.c    |  143 -----------
 hw/virtio-console.h    |   19 --
 hw/virtio-pci.c        |   17 +-
 hw/virtio-serial-bus.c |  620 ++++++++++++++++++++++++++++++++++++++++++++++++
 hw/virtio-serial.c     |  146 ++++++++++++
 hw/virtio-serial.h     |  173 ++++++++++++++
 hw/virtio.c            |    2 -
 hw/virtio.h            |    4 +-
 qemu-options.hx        |    4 +
 sysemu.h               |    6 -
 vl.c                   |    2 +
 19 files changed, 978 insertions(+), 217 deletions(-)
 delete mode 100644 hw/virtio-console.c
 delete mode 100644 hw/virtio-console.h
 create mode 100644 hw/virtio-serial-bus.c
 create mode 100644 hw/virtio-serial.c
 create mode 100644 hw/virtio-serial.h