nova/releasenotes/notes/extend-libvirt-video-model-...

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---
features:
- |
In this release support was added for two additional libvirt video models:
``gop``, the UEFI graphic output protocol device model; and the ``none``
device model. Existing support for ``virtio`` has been extended to all
architectures and may now be requested via the ``hw_video_model`` image
metadata property. Prior to this release the ``virtio`` video model was
unconditionally enabled for ``AARCH64``. This is unchanged but it can now
be explicitly enabled on all supported architectures. The ``none`` video
model can be used to disable emulated video devices when using pGPU or
vGPU passthrough.