[libvirt] [PATCH] qemu: Support ram bar size for qxl devices

[Michal Privoznik]

On 17.01.2013 20:35, Alon Levy wrote:
> Adds a qxl-ram attribute globaly to the video.model element, that changes
> the resulting qemu command line only if video.type == "qxl".
> 
> That attribute gets a default value of 64*1024 only if model.type is
> "qxl". In effect not changing any xml or argv for non qxl devices.
> 
> For qxl devices a new property is set:
> -global qxl-vga.ram_size=<ram>*1024
> or
> -global qxl.ram_size=<ram>*1024
> 
> For the main and secondary qxl devices respectively.
> 
> The default for the qxl ram bar is the same as the default for the qxl
> vram bar, 64*1024.
> ---
> I've added a qxl-ram attribute. There is no precedent for adding am attribute
> prefixed like this, so I'm open for any other suggestion on how to do it.
> 
>  docs/schemas/domaincommon.rng                      |  9 +++-
>  src/conf/domain_conf.c                             | 19 ++++++-
>  src/conf/domain_conf.h                             |  1 +
>  src/qemu/qemu_command.c                            | 58 ++++++++++++++++++----
>  .../qemuxml2argv-graphics-spice-compression.args   |  2 +-
>  .../qemuxml2argv-graphics-spice-compression.xml    |  4 +-
>  .../qemuxml2argv-graphics-spice-qxl-vga.args       |  2 +-
>  .../qemuxml2argv-graphics-spice-qxl-vga.xml        |  4 +-
>  .../qemuxml2argv-graphics-spice.args               |  2 +-
>  .../qemuxml2argv-graphics-spice.xml                |  4 +-
>  .../qemuxml2argv-video-device-pciaddr-default.args |  6 +--
>  11 files changed, 86 insertions(+), 25 deletions(-)

Just one question - what is the difference between ram_size and
vram_size? If the former is successor of the latter, I think we should
be using the ram_size and drop vram_size and not pollute XML at all.
However, if there's any difference we should document that. That is,
every XML snippet being introduced must go hand in hand with extending
docs/format*.html.in.

Michal