nova/releasenotes/notes/libvirt-pmu-configuration-ec24904bddc84bef.yaml
Sean Mooney 326bc658ee Libvirt: add support for vPMU configuration.
This change adds the ablity for a user or operator to contol
the virtualisation of a performance monitoring unit within a vm.
This change introduces a new "hw:pmu" extra spec and a corresponding
image metadata property "hw_pmu".

The glance image metadata doc will be updated seperately by:
https://review.opendev.org/#/c/675182

Change-Id: I5576fa2a67d2771614266022428b4a95487ab6d5
Implements: blueprint libvirt-pmu-configuration
2019-08-20 14:41:57 +00:00

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YAML

---
features:
- |
The libvirt driver has been extended to support user configurable
performance monitoring unit (vPMU) virtualization.
This is particularly useful for real-time workloads.
A pair of boolean flavor extra spec and image metadata properties
``hw:pmu`` and ``hw_pmu`` have been added to control the emulation
of the vPMU. By default the behavior of vPMU emulation has
not been changed. To take advantage of this new feature, the operator
or tenant will need to update their flavors or images to define the
new property.