Public bug reported:
https://review.opendev.org/#/c/644565/ added logic to
libvirt/designer.py for enabling iommu for certain devices where virtio
is used. This is required for AMD SEV[0]. However it missed the case
of a SCSI controller where the model is virtio-scsi, e.g.:
<controller type='scsi' index='0' model='virtio-scsi'>
As with other virtio devices, here a child element needs to be added to
the config when SEV is enabled:
<driver iommu="on" />
[0] http://specs.openstack.org/openstack/nova-specs/specs/train/approved
/amd-sev-libvirt-support.html#proposed-change
** Affects: nova
Importance: Undecided
Assignee: Adam Spiers (adam.spiers)
Status: In Progress
** Tags: sev
** Changed in: nova
Assignee: (unassigned) => Adam Spiers (adam.spiers)
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https://bugs.launchpad.net/bugs/1845986
Title:
SEV does not enable IOMMU on SCSI controller
Status in OpenStack Compute (nova):
In Progress
Bug description:
https://review.opendev.org/#/c/644565/ added logic to
libvirt/designer.py for enabling iommu for certain devices where
virtio is used. This is required for AMD SEV[0]. However it missed
the case of a SCSI controller where the model is virtio-scsi, e.g.:
<controller type='scsi' index='0' model='virtio-scsi'>
As with other virtio devices, here a child element needs to be added
to the config when SEV is enabled:
<driver iommu="on" />
[0] http://specs.openstack.org/openstack/nova-
specs/specs/train/approved/amd-sev-libvirt-support.html#proposed-
change
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