Add traits for viommu model

* Add iommu model trait for viommu model

* Add ``hw_viommu_model`` to request_filter, this will extend the
  transform_image_metadata prefilter to select host with the correct model.

* Provide new compute ``COMPUTE_VIOMMU_MODEL_*`` capablity trait for each model
  it supports in driver.

Implements: blueprint libvirt-viommu-device
Depends-On: https://review.opendev.org/c/openstack/os-traits/+/844336
Change-Id: I2caa1a9c473a2b11c287061280b4a78edb96f859
changes/07/844507/20
Rico Lin 8 months ago committed by ricolin
parent 14e3b352c2
commit dc05564435

@ -214,6 +214,7 @@ def transform_image_metadata(ctxt, request_spec):
'hw_vif_model': 'COMPUTE_NET_VIF_MODEL',
'hw_architecture': 'HW_ARCH',
'hw_emulation_architecture': 'COMPUTE_ARCH',
'hw_viommu_model': 'COMPUTE_VIOMMU',
}
trait_names = []

@ -4156,7 +4156,8 @@ class LibvirtConfigDomainCapsDevicesTests(LibvirtConfigBaseTest):
obj.parse_str(xml)
# we only use the video and disk devices today.
device_types = [config.LibvirtConfigDomainCapsDiskBuses,
config.LibvirtConfigDomainCapsVideoModels]
config.LibvirtConfigDomainCapsVideoModels,
]
# so we assert there are only two device types parsed
self.assertEqual(2, len(obj.devices))
# we then assert that the parsed devices are of the correct type

@ -961,9 +961,10 @@ class LibvirtConnTestCase(test.NoDBTestCase,
@mock.patch.object(libvirt_driver.LibvirtDriver, '_get_storage_bus_traits')
@mock.patch.object(libvirt_driver.LibvirtDriver, '_get_video_model_traits')
@mock.patch.object(libvirt_driver.LibvirtDriver, '_get_vif_model_traits')
@mock.patch.object(host.Host, "has_min_version")
def test_static_traits(
self, mock_vif_traits, mock_video_traits, mock_storage_traits,
mock_cpu_traits,
self, mock_version, mock_vif_traits, mock_video_traits,
mock_storage_traits, mock_cpu_traits,
):
"""Ensure driver capabilities are correctly retrieved and cached."""
@ -974,14 +975,21 @@ class LibvirtConnTestCase(test.NoDBTestCase,
mock_video_traits.return_value = {'COMPUTE_GRAPHICS_MODEL_VGA': True}
mock_vif_traits.return_value = {'COMPUTE_NET_VIF_MODEL_VIRTIO': True}
# for support COMPUTE_VIOMMU_MODEL_VIRTIO
mock_version.return_value = True
drvr = libvirt_driver.LibvirtDriver(fake.FakeVirtAPI(), False)
expected = {
'HW_CPU_HYPERTHREADING': True,
'COMPUTE_STORAGE_BUS_VIRTIO': True,
'COMPUTE_GRAPHICS_MODEL_VGA': True,
'COMPUTE_NET_VIF_MODEL_VIRTIO': True,
'COMPUTE_SECURITY_TPM_1_2': False,
'COMPUTE_SECURITY_TPM_2_0': False,
'COMPUTE_STORAGE_BUS_VIRTIO': True,
'COMPUTE_VIOMMU_MODEL_AUTO': True,
'COMPUTE_VIOMMU_MODEL_INTEL': True,
'COMPUTE_VIOMMU_MODEL_SMMUV3': True,
'COMPUTE_VIOMMU_MODEL_VIRTIO': True,
'HW_CPU_HYPERTHREADING': True
}
static_traits = drvr.static_traits
@ -1027,6 +1035,10 @@ class LibvirtConnTestCase(test.NoDBTestCase,
'COMPUTE_NET_VIF_MODEL_VIRTIO': True,
'COMPUTE_SECURITY_TPM_1_2': False,
'COMPUTE_SECURITY_TPM_2_0': False,
'COMPUTE_VIOMMU_MODEL_AUTO': True,
'COMPUTE_VIOMMU_MODEL_INTEL': True,
'COMPUTE_VIOMMU_MODEL_SMMUV3': True,
'COMPUTE_VIOMMU_MODEL_VIRTIO': False
}
static_traits = drvr.static_traits

@ -8922,6 +8922,7 @@ class LibvirtDriver(driver.ComputeDriver):
traits.update(self._get_storage_bus_traits())
traits.update(self._get_video_model_traits())
traits.update(self._get_vif_model_traits())
traits.update(self._get_iommu_model_traits())
traits.update(self._get_tpm_traits())
_, invalid_traits = ot.check_traits(traits)
@ -12198,6 +12199,30 @@ class LibvirtDriver(driver.ComputeDriver):
in supported_models for model in all_models
}
def _get_iommu_model_traits(self) -> ty.Dict[str, bool]:
"""Get iommu model traits based on the currently enabled virt_type.
Not all traits generated by this function may be valid and the result
should be validated.
:return: A dict of trait names mapped to boolean values.
"""
dom_caps = self._host.get_domain_capabilities()
supported_models: ty.Set[str] = {fields.VIOMMUModel.AUTO}
# our min version of qemu/libvirt supprot q35 and virt machine types.
# They also support the smmuv3 and intel iommu modeles so if the qemu
# binary is avaiable we can report the trait.
if fields.Architecture.AARCH64 in dom_caps:
supported_models.add(fields.VIOMMUModel.SMMUV3)
if fields.Architecture.X86_64 in dom_caps:
supported_models.add(fields.VIOMMUModel.INTEL)
# the virtio iommu model requires a newer libvirt then our min
# libvirt so we need to check the version explcitly.
if self._host.has_min_version(MIN_LIBVIRT_VIOMMU_VIRTIO_MODEL):
supported_models.add(fields.VIOMMUModel.VIRTIO)
return {
f'COMPUTE_VIOMMU_MODEL_{model.replace("-", "_").upper()}': model
in supported_models for model in fields.VIOMMUModel.ALL
}
def _get_storage_bus_traits(self) -> ty.Dict[str, bool]:
"""Get storage bus traits based on the currently enabled virt_type.

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