* **New features**
+ * qemu: Add support to configure IOMMUFD backend for whole VM
+
+ In addition to setting IOMMUFD backend for each device it is possible
+ to use the new ``<iommufd>`` element to enable IOMMUFD backend for all
+ host devices. Users can still change it per device.
+
+ * qemu: Add support to pass FD for IOMMUFD when starting VM
+
+ Management applications running unprivileged libvirt can open /dev/iommu
+ and pass FD to libvirt in order to change locked memory accounting.
+ This is done via new ``<iommufd>`` element.
+
* **Improvements**
* conf: support more than 255 vCPUs with amd-iommu
* **Bug fixes**
+ * qemu: Fix crash when attaching network inteface with hostdev network
+
+ Introduced in v12.1.0 by implementing IOMMUFD backend support for
+ host devices.
+
v12.1.0 (2026-03-02)
====================