15 lines
682 B
YAML
15 lines
682 B
YAML
---
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features:
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- |
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The libvirt driver now allows specifying individual CPU feature
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flags for guest, via a new configuration parameter
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``[libvirt]/cpu_model_extra_flags`` -- this is valid in combination
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with all the three possible values for ``[libvirt]/cpu_mode``:
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``custom``, ``host-model`` and ``host-passthrough``. The
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``cpu_model_extra_flags`` allows specifying multiple CPU flags.
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The recent "Meltdown" CVE fixes have resulted in critical
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performance penalty which impacts every Nova guest within
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certain CPU models.
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More info is available in `nova release notes <https://docs.openstack.org/releasenotes/nova/queens.html#bug-fixes>`_.
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