On 2016年11月14日 22:16, Felipe Franciosi wrote:
The device (not the driver) populates the used ring and includes the len of how much data was written. Signed-off-by: Felipe Franciosi <felipe@xxxxxxxxxxx> --- drivers/virtio/virtio_ring.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c index 489bfc6..8a0d6a9 100644 --- a/drivers/virtio/virtio_ring.c +++ b/drivers/virtio/virtio_ring.c @@ -649,7 +649,7 @@ static inline bool more_used(const struct vring_virtqueue *vq) * @vq: the struct virtqueue we're talking about. * @len: the length written into the buffer * - * If the driver wrote data into the buffer, @len will be set to the + * If the device wrote data into the buffer, @len will be set to the * amount written. This means you don't need to clear the buffer * beforehand to ensure there's no data leakage in the case of short * writes.
Reviewed-by: Jason Wang <jasowang@xxxxxxxxxx> _______________________________________________ Virtualization mailing list Virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linuxfoundation.org/mailman/listinfo/virtualization
