-ifeq ($(CONFIG_REALLY_VIRTFS),y)
-common-obj-y = qemu-fsdev.o virtio-9p-marshal.o
-
-# Toplevel always builds this; targets without virtio will put it in
-# common-obj-y
-extra-obj-y = qemu-fsdev-dummy.o
+# Lots of the fsdev/9pcode is pulled in by vl.c via qemu_fsdev_add.
+# only pull in the actual 9p backend if we also enabled virtio or xen.
+ifeq ($(CONFIG_FSDEV_9P),y)
+common-obj-y = qemu-fsdev.o 9p-marshal.o 9p-iov-marshal.o
else
common-obj-y = qemu-fsdev-dummy.o
endif
-common-obj-y += qemu-fsdev-opts.o
+common-obj-y += qemu-fsdev-opts.o qemu-fsdev-throttle.o
+
+# Toplevel always builds this; targets without virtio will put it in
+# common-obj-y
+common-obj-$(CONFIG_ALL) += qemu-fsdev-dummy.o