(Cache Flush on Privilege Change), SBBC (Speculation Barrier Bounds
Checking) and IBS (Indirect Branch Speculation).
+ * qemu: Add support for virtio packed option
+
+ The ``packed`` attribute controls if QEMU should try to use packed
+ virtqueues. Possible values are ``on`` or ``off``.
+
* **Improvements**
* qemu: Allow checkpoint redefine for offline VMs
This device, available starting from QEMU 5.0, is limited to pSeries
guests.
+ * qemu: support Panic Crashloaded event handling
+
+ The pvpanic device now supports a 'crashloaded' event, which is emitted
+ when a guest panic has occurred but has already been handled by the guest
+ itself.
+
+ * qemu: Implement virDomainGetHostnameFlags
+
+ The ``--source`` argument to ``virsh domhostname`` can be used to specify
+ what data source to use for the domain hostnames. Currently, in addition
+ to the 'agent', libvirt can also use 'lease' information from dnsmasq to
+ get the hostname.
+
* **Improvements**
* qemu: Image format probing is allowed in certain cases