As virtio-1 devices use little endian on their queues, we need
to make sure the pfns are in virtio32 format before we put
them on the queue.
Signed-off-by: Cornelia Huck <cornelia.huck@xxxxxxxxxx>
---
drivers/virtio/virtio_balloon.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/virtio/virtio_balloon.c b/drivers/virtio/virtio_balloon.c
index 7b6d74f..89da06c 100644
--- a/drivers/virtio/virtio_balloon.c
+++ b/drivers/virtio/virtio_balloon.c
@@ -76,6 +76,7 @@ struct virtio_balloon {
/* The array of pfns we tell the Host about. */
unsigned int num_pfns;
u32 pfns[VIRTIO_BALLOON_ARRAY_PFNS_MAX];
+ __virtio32 vpfns[VIRTIO_BALLOON_ARRAY_PFNS_MAX];
/* Memory statistics */
struct virtio_balloon_stat stats[VIRTIO_BALLOON_S_NR];
@@ -115,8 +116,11 @@ static void tell_host(struct virtio_balloon *vb, struct virtqueue *vq)
{
struct scatterlist sg;
unsigned int len;
+ int i;
- sg_init_one(&sg, vb->pfns, sizeof(vb->pfns[0]) * vb->num_pfns);
+ for (i = 0; i < vb->num_pfns; i++)
+ vb->vpfns[i] = cpu_to_virtio32(vb->vdev, vb->pfns[i]);
+ sg_init_one(&sg, vb->vpfns, sizeof(vb->vpfns[0]) * vb->num_pfns);
/* We should always be able to add one buffer to an empty queue. */
virtqueue_add_outbuf(vq, &sg, 1, vb, GFP_KERNEL);
--
2.6.6
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