starting as qemu doesn't accept the tuning for an empty drive. We now
postpone setting the parameters until a new media is inserted.
+ * Avoid taking extra host memory when launching pSeries guests
+
+ Under certain conditions, pSeries guests were being launched with more
+ RAM than it was specified in the domain XML by the user. New pSeries
+ domains created with libvirt 7.0.0 will always launch with the right
+ amount of initial memory. Existing guests that migrate from an older
+ libvirt version to 7.0.0 will not be affected by this change.
+
v6.10.0 (2020-12-01)
====================