Re: [libvirt] [PATCH v2 2/2] qemu: report an error if memballoon has wrong address type

qemuBuildMemballoonDevStr returns NULL if memballoon doesn't have the right address type, but it doesn't report an error, leading to: error: An error occurred, but the cause is unknown Report a helpful error message instead, e.g.: error: XML error: memballoon unsupported with address type 'usb' --- src/qemu/qemu_command.c | 3 +++ 1 file changed, 3 insertions(+)

diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c index d161b56..3184e5b 100644 --- a/src/qemu/qemu_command.c +++ b/src/qemu/qemu_command.c @@ -4175,6 +4175,9 @@ qemuBuildMemballoonDevStr(virDomainMemballoonDefPtr dev, virBufferAddLit(&buf, "virtio-balloon-ccw"); break; default: + virReportError(VIR_ERR_XML_ERROR, + _("memballoon unsupported with address type '%s'"), + virDomainDeviceAddressTypeToString(dev->info.type)); goto error; }