[00/18] Xen PV backend 'qdevification'
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Message ID 20181121151211.15997-1-paul.durrant@citrix.com
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  • Xen PV backend 'qdevification'
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Paul Durrant Nov. 21, 2018, 3:11 p.m. UTC
This series introduces a new QOM compliant framework for Xen PV backends.
This is achieved by first moving the current non-compliant framework aside,
before building up a new framework incrementally.

This series was prompted by a thread [1] started by Kevin Wolf in response
to patches against xen_disk.c posted by Tim Smith. Therefore, alongside
the patches introducing the new framework, other patches build up a QOM
compliant replacement for 'xen_disk', called 'xen-qdisk'. Patch #16 swaps
this new device into place (having establisheda mechanism to auto-
instantiate devices that is compliant with existing Xen toolstacks in
patch #15) and patch #18 then removes the old xen_disk code.

Subsequent series will port other Xen PV backends across to the new
framework.

The series is also available as a repository branch [2] on xenbits.xen.org.

[1] https://lists.gnu.org/archive/html/qemu-devel/2018-11/msg00259.html
[2] http://xenbits.xen.org/gitweb/?p=people/pauldu/qemu.git;a=shortlog;h=refs/heads/qom23

Paul Durrant (18):
  xen: re-name XenDevice to XenLegacyDevice...
  xen: introduce new 'XenBus' and 'XenDevice' object hierarchy
  xen: introduce 'xen-qdisk'
  xen: create xenstore areas for XenDevice-s
  xen: add xenstore watcher infratructure
  xen: add grant table interface for XenDevice-s
  xen: add event channel interface for XenDevice-s
  xen: duplicate xen_disk.c as basis of dataplane/xen-qdisk.c
  xen: remove unnecessary code from dataplane/xen-qdisk.c
  xen: add header and build dataplane/xen-qdisk.c
  xen: remove 'XenBlkDev' and 'blkdev' names from dataplane/xen-qdisk
  xen: remove 'ioreq' struct/varable/field names from
    dataplane/xen-qdisk.c
  xen: purge 'blk' and 'ioreq' from function names in
    dataplane/xen-qdisk.c
  xen: add implementations of xen-qdisk connect and disconnect
    functions...
  xen: add a mechanism to automatically create XenDevice-s...
  xen: automatically create XenQdiskDevice-s
  MAINTAINERS: add myself as a Xen maintainer
  xen: remove the legacy 'xen_disk' backend

 MAINTAINERS                                        |    5 +-
 hw/9pfs/xen-9p-backend.c                           |   16 +-
 hw/block/Makefile.objs                             |    2 +-
 hw/block/dataplane/Makefile.objs                   |    1 +
 hw/block/dataplane/xen-qdisk.c                     |  756 +++++++++++++++
 hw/block/dataplane/xen-qdisk.h                     |   25 +
 hw/block/trace-events                              |    7 +
 hw/block/xen-qdisk.c                               |  698 +++++++++++++
 hw/block/xen_disk.c                                | 1011 -------------------
 hw/char/xen_console.c                              |   12 +-
 hw/display/xenfb.c                                 |   25 +-
 hw/i386/xen/xen-hvm.c                              |    5 +-
 hw/i386/xen/xen-mapcache.c                         |    2 +-
 hw/i386/xen/xen_platform.c                         |    2 +-
 hw/net/xen_nic.c                                   |   14 +-
 hw/usb/xen-usb.c                                   |   25 +-
 hw/xen/Makefile.objs                               |    2 +-
 hw/xen/trace-events                                |   17 +
 hw/xen/xen-backend.c                               |   67 ++
 hw/xen/xen-bus-helper.c                            |  152 +++
 hw/xen/xen-bus.c                                   | 1021 ++++++++++++++++++++
 hw/xen/xen-common.c                                |    2 +-
 hw/xen/{xen_backend.c => xen-legacy-backend.c}     |   74 +-
 hw/xen/xen_devconfig.c                             |    2 +-
 hw/xen/xen_pt.c                                    |    2 +-
 hw/xen/xen_pt_config_init.c                        |    2 +-
 hw/xen/xen_pt_graphics.c                           |    2 +-
 hw/xen/xen_pt_msi.c                                |    2 +-
 hw/xen/xen_pvdev.c                                 |   20 +-
 hw/xenpv/xen_domainbuild.c                         |    2 +-
 hw/xenpv/xen_machine_pv.c                          |    5 +-
 include/hw/xen/xen-backend.h                       |   24 +
 include/hw/xen/xen-bus-helper.h                    |   31 +
 include/hw/xen/xen-bus.h                           |  132 +++
 .../hw/xen/{xen_backend.h => xen-legacy-backend.h} |   43 +-
 include/hw/xen/xen-qdisk.h                         |   51 +
 include/hw/xen/xen_pvdev.h                         |   38 +-
 include/qemu/module.h                              |    3 +
 38 files changed, 3150 insertions(+), 1150 deletions(-)
 create mode 100644 hw/block/dataplane/xen-qdisk.c
 create mode 100644 hw/block/dataplane/xen-qdisk.h
 create mode 100644 hw/block/xen-qdisk.c
 delete mode 100644 hw/block/xen_disk.c
 create mode 100644 hw/xen/xen-backend.c
 create mode 100644 hw/xen/xen-bus-helper.c
 create mode 100644 hw/xen/xen-bus.c
 rename hw/xen/{xen_backend.c => xen-legacy-backend.c} (89%)
 create mode 100644 include/hw/xen/xen-backend.h
 create mode 100644 include/hw/xen/xen-bus-helper.h
 create mode 100644 include/hw/xen/xen-bus.h
 rename include/hw/xen/{xen_backend.h => xen-legacy-backend.h} (61%)
 create mode 100644 include/hw/xen/xen-qdisk.h
---
Cc: Anthony Perard <anthony.perard@citrix.com>
Cc: Eduardo Habkost <ehabkost@redhat.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Greg Kurz <groug@kaod.org>
Cc: Jason Wang <jasowang@redhat.com>
Cc: Kevin Wolf <kwolf@redhat.com>
Cc: "Marc-André Lureau" <marcandre.lureau@redhat.com>
Cc: Marcel Apfelbaum <marcel.apfelbaum@gmail.com>
Cc: Max Reitz <mreitz@redhat.com>
Cc: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Stefan Hajnoczi <stefanha@redhat.com>
Cc: Stefano Stabellini <sstabellini@kernel.org>
Cc: Tim Smith <tim.smith@citrix.com>