Add the iommu specification for hardware

Signed-off-by: Han Han <hhan@redhat.com>

docs/releases.rst

@@ -15,6 +15,9 @@ can now be used in the :ref:`plugins/report/junit` and
 failures or the full standard output should be included in the
 generated report.
 
+Add the specification key :ref:`/spec/hardware/iommu` to select or
+provision a guest with `Input–output memory management unit`
+
 
 tmt-1.34
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

spec/hardware/iommu.fmf

@@ -0,0 +1,26 @@
+summary: |
+    Select or provision a guest with the `Input–output memory management unit`.
+
+description: |
+    .. code-block::
+
+       iommu:
+           # Boolean, whether the guest supports IOMMU
+           is-supported: "x"
+           # String, the model name for virtualizated IOMMU
+           model: "virtio"|"intel"|"smmuv3"
+
+    .. versionadded:: 1.35
+
+example:
+  - |
+    # Require a guest that supports IOMMU
+    iommu:
+        is-supported: true|false
+
+  - |
+    # Require a guest with the IOMMU of virtio model
+    iommu:
+        is-supported: true|false
+        model: virtio
+

tmt/schemas/provision/hardware.yaml

@@ -333,6 +333,20 @@ definitions:
     # empty `boot`.
     minProperties: 1
 
+  # Hw requirements `iommu` block
+  iommu:
+    type: object
+
+    properties:
+      is-supported:
+        type: boolean
+
+      model:
+        type: string
+
+    additionalProperties: false
+    minProperties: 1
+
   # HW requirements: basic block
   block:
     type: object
@@ -383,6 +397,9 @@ definitions:
       virtualization:
         "$ref": "#/definitions/virtualization"
 
+      iommu:
+        "$ref": "#/definitions/iommu"
+
     additionalProperties: false
 
     # enforce at least one property - we don't care which one, but we don't want