Linux Virtualization - Oct 2014 - [PATCH RFC v3 06/16] virtio: make endian-ness depend on virtio 1.0

virtio 1.0 is LE, virtio without 1.0 is native endian.

Signed-off-by: Michael S. Tsirkin <mst at redhat.com>
---
 include/linux/virtio_config.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/include/linux/virtio_config.h b/include/linux/virtio_config.h
index 7d46280..be0f6dd 100644
--- a/include/linux/virtio_config.h
+++ b/include/linux/virtio_config.h
@@ -157,11 +157,11 @@ int virtqueue_set_affinity(struct virtqueue *vq, int cpu)
 #define DEFINE_VIRTIO_XX_TO_CPU(bits) \
 static inline u##bits virtio##bits##_to_cpu(struct virtio_device *vdev,
__virtio##bits val) \
 { \
-	return __virtio##bits##_to_cpu(false, val); \
+	return __virtio##bits##_to_cpu(virtio_has_feature(vdev, VIRTIO_F_VERSION_1),
val); \
 } \
 static inline __virtio##bits cpu_to_virtio##bits(struct virtio_device *vdev,
u##bits val) \
 { \
-	return __cpu_to_virtio##bits(false, val); \
+	return __cpu_to_virtio##bits(virtio_has_feature(vdev, VIRTIO_F_VERSION_1),
val); \
 }
 
 DEFINE_VIRTIO_XX_TO_CPU(16)
-- 
MST

On Wed, 22 Oct 2014 21:44:34 +0300
"Michael S. Tsirkin" <mst at redhat.com> wrote:
> virtio 1.0 is LE, virtio without 1.0 is native endian.
> 
> Signed-off-by: Michael S. Tsirkin <mst at redhat.com>
> ---
>  include/linux/virtio_config.h | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
Looks sane.