[v6,00/18] Xen PV backend 'qdevification'

Message

Paul Durrant Dec. 17, 2018, 1:29 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/qom31

Paul Durrant (18):
  xen: re-name XenDevice to XenLegacyDevice...
  xen: introduce new 'XenBus' and 'XenDevice' object hierarchy
  xen: introduce 'xen-block', 'xen-disk' and 'xen-cdrom'
  xen: create xenstore areas for XenDevice-s
  xen: add xenstore watcher infrastructure
  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-block.c
  xen: remove unnecessary code from dataplane/xen-block.c
  xen: add header and build dataplane/xen-block.c
  xen: remove 'XenBlkDev' and 'blkdev' names from dataplane/xen-block
  xen: remove 'ioreq' struct/varable/field names from
    dataplane/xen-block.c
  xen: purge 'blk' and 'ioreq' from function names in
    dataplane/xen-block.c
  xen: add implementations of xen-block connect and disconnect
    functions...
  xen: add a mechanism to automatically create XenDevice-s...
  xen: automatically create XenBlockDevice-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-block.c                |  808 +++++++++++
 hw/block/dataplane/xen-block.h                |   29 +
 hw/block/trace-events                         |   14 +
 hw/block/xen-block.c                          | 1007 ++++++++++++++
 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                           |   26 +
 hw/xen/xen-backend.c                          |  165 +++
 hw/xen/xen-bus-helper.c                       |  184 +++
 hw/xen/xen-bus.c                              | 1197 +++++++++++++++++
 hw/xen/xen-common.c                           |    2 +-
 .../{xen_backend.c => xen-legacy-backend.c}   |   80 +-
 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                  |   39 +
 include/hw/xen/xen-block.h                    |   95 ++
 include/hw/xen/xen-bus-helper.h               |   45 +
 include/hw/xen/xen-bus.h                      |  138 ++
 .../{xen_backend.h => xen-legacy-backend.h}   |   43 +-
 include/hw/xen/xen_pvdev.h                    |   38 +-
 include/qemu/module.h                         |    3 +
 38 files changed, 3919 insertions(+), 1153 deletions(-)
 create mode 100644 hw/block/dataplane/xen-block.c
 create mode 100644 hw/block/dataplane/xen-block.h
 create mode 100644 hw/block/xen-block.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-block.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%)
---
Cc: Anthony Perard <[e-mail]>
Cc: Eduardo Habkost <[e-mail]>
Cc: Gerd Hoffmann <[e-mail]>
Cc: Greg Kurz <[e-mail]>
Cc: Jason Wang <[e-mail]>
Cc: Kevin Wolf <[e-mail]>
Cc: "Marc-André Lureau" <[e-mail]>
Cc: Marcel Apfelbaum <[e-mail]>
Cc: Max Reitz <[e-mail]>
Cc: "Michael S. Tsirkin" <[e-mail]>
Cc: Paolo Bonzini <[e-mail]>
Cc: Richard Henderson <[e-mail]>
Cc: Stefan Hajnoczi <[e-mail]>
Cc: Stefano Stabellini <[e-mail]>
Cc: Tim Smith <[e-mail]>

v6:
 - Fix boilerplate in patch #9 again
 - Move to newer version of git

v5:
 - Re-worked backend auto-creation

v4:
 - Add missing boilerplate fix

v3:
 - Various fixes, including unplug

v2:
 - Fix boilerplates of introduced files and leave existing ones alone