docs: Document virtio-iommu

Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>

diff --git a/docs/formatdomain.rst b/docs/formatdomain.rst
index f2958cd8485f6a32e7877e65f222c562c61312e7..c67dcfb4bf193adb3005025189029b4b6986228d 100644 (file)
--- a/docs/formatdomain.rst
+++ b/docs/formatdomain.rst
@@ -8066,8 +8066,9 @@ Example:
    ...
 
 ``model``
-   Supported values are ``intel`` (for Q35 guests) and, :since:`since 5.5.0` ,
-   ``smmuv3`` (for ARM virt guests).
+   Supported values are ``intel`` (for Q35 guests) ``smmuv3``
+   (:since:`since 5.5.0`, for ARM virt guests), and ``virtio``
+   (:since:`since 8.3.0`, for Q35 and ARM virt guests).
 
 ``driver``
    The ``driver`` subelement can be used to configure additional options, some