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[libvirt] [PATCH 0/4]use newer video device by -device in qemu commandline

This patch set aims to use qemu VGA device with -device option to replace
-vga option. The mapping is as follows.

'-device VGA' maps to '-vga std'
'-device cirrus-vga' maps to '-vga cirrus'
'-device qxl-vga' maps to '-vga qxl'
    (there is also '-device qxl' for secondary devices)
'-device vmware-svga' maps to '-vga vmware'

Through this change, guests will be able to use any available PCI slot
number rather than fixed 0x2 slot for primary video device. For backwards
compatibility, if a certain qemu version does not support one of the above
video device arguments to -device or even -device itself, the -vga will still
be used.

  Guannan Ren(4)
  [PATCH 1/4] qemu: add qemu various VGA devices Caps flag
  [PATCH 2/4] conf: add optional attribte primary to video <model>
  [PATCH 3/4] qemu: use newer -device video device in qemu commandline
  [PATCH 4/4] doc: add attribute primary doc to video model element

 docs/formatdomain.html.in                                      |   6 +-
 src/conf/domain_conf.c                                         |  27 +++-
 src/conf/domain_conf.h                                         |   1 +
 src/qemu/qemu_capabilities.c                                   |  10 +-
 src/qemu/qemu_capabilities.h                                   |   4 +
 src/qemu/qemu_command.c                                        | 183 +++++++++++++++++++---------
 tests/qemuhelptest.c                                           |  48 ++++++--
 .../qemuxml2argvdata/qemuxml2argv-graphics-spice-qxl-vga.args  |   5 +-
 tests/qemuxml2argvtest.c                                       |  12 +-
 9 files changed, 220 insertions(+), 76 deletions(-)

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