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[Marcin Juszkiewicz <1741230@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

At Linaro we have several instances of OpenStack running. Some are
public, some private. Some at Newton, some at Pike and now some on
Queens.

And always we have to set cpu_mode = 'host-passthrough' in [libvirt]
section of nova.conf file.

As we use Kolla to build and deploy Queens I added workaround there
which sets cpu_mode in proper way for AArch64. But this is workaround...

So I looked at code of Nova and created some quick hack:
https://review.openstack.org/#/c/530965/

It works for us but may not be proper way of doing it.

We use Debian 'stretch' as host system with libvirt 3.10.0 backported
from 'testing'.

** Affects: nova
     Importance: Undecided
     Assignee: Marcin Juszkiewicz (hrw)
         Status: In Progress

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https://bugs.launchpad.net/bugs/1741230

Title:
  libvirt: use 'host-passthrough' as default on AArch64

Status in OpenStack Compute (nova):
  In Progress

Bug description:
  At Linaro we have several instances of OpenStack running. Some are
  public, some private. Some at Newton, some at Pike and now some on
  Queens.

  And always we have to set cpu_mode = 'host-passthrough' in [libvirt]
  section of nova.conf file.

  As we use Kolla to build and deploy Queens I added workaround there
  which sets cpu_mode in proper way for AArch64. But this is
  workaround...

  So I looked at code of Nova and created some quick hack:
  https://review.openstack.org/#/c/530965/

  It works for us but may not be proper way of doing it.

  We use Debian 'stretch' as host system with libvirt 3.10.0 backported
  from 'testing'.

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