Dave Jones <da...@redhat.com> writes:

> After linking, I see this..
>
> ERROR: "virtqueue_kick" [net/9p/9pnet_virtio.ko] undefined!
> ERROR: "virtqueue_get_buf" [net/9p/9pnet_virtio.ko] undefined!

Cool!

Someone else spotted this recently, and the fix is in my recent pull
request to Linus:

commit 04679f34c141a0591e525d392929efc249440a7c
Author: Michael S. Tsirkin <m...@redhat.com>
Date:   Fri Sep 28 15:05:14 2012 +0930

    virtio-balloon: dependency fix
    
    Devices should depend on virtio, not select it.  It's supposed to be
    selected by the particular driver, e.g. VIRTIO_PCI.
    Make balloon depend on VIRTIO and EXPERIMENTAL
    (to match description).
    
    Signed-off-by: Michael S. Tsirkin <m...@redhat.com>
    Signed-off-by: Rusty Russell <ru...@rustcorp.com.au>

diff --git a/drivers/virtio/Kconfig b/drivers/virtio/Kconfig
index f38b17a..271be80 100644
--- a/drivers/virtio/Kconfig
+++ b/drivers/virtio/Kconfig
@@ -27,8 +27,7 @@ config VIRTIO_PCI
 
 config VIRTIO_BALLOON
        tristate "Virtio balloon driver (EXPERIMENTAL)"
-       select VIRTIO
-       select VIRTIO_RING
+       depends on EXPERIMENTAL && VIRTIO
        ---help---
         This driver supports increasing and decreasing the amount
         of memory within a KVM guest.
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