When attaching a mediated host device of model vfio-ccw without specifying a guest-address, none is generated by libvirt. Let's fix this and make sure to generate a device address during live-hotplug. Reviewed-by: Boris Fiuczynski <fiuczy(a)linux.ibm.com&gt; Signed-off-by: Bjoern Walk <bwalk(a)linux.ibm.com&gt; --- src/qemu/qemu_hotplug.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/src/qemu/qemu_hotplug.c b/src/qemu/qemu_hotplug.c index fd4bafef..7b775159 100644 --- a/src/qemu/qemu_hotplug.c +++ b/src/qemu/qemu_hotplug.c @@ -2790,6 +2790,8 @@ qemuDomainAttachMediatedDevice(virQEMUDriverPtr driver, { int ret = -1; g_autofree char *devstr = NULL; + char *devName = NULL; + bool releaseaddr = false; bool added = false; bool teardowncgroup = false; bool teardownlabel = false; @@ -2805,6 +2807,10 @@ qemuDomainAttachMediatedDevice(virQEMUDriverPtr driver, return -1; break; case VIR_MDEV_MODEL_TYPE_VFIO_CCW: + devName = hostdev->source.subsys.u.mdev.uuidstr; + if (qemuDomainEnsureVirtioAddress(&releaseaddr, vm, &dev, devName) < 0) + return -1; + break; case VIR_MDEV_MODEL_TYPE_LAST: break; } -- 2.21.0