Commit ab27c07f authored by Greg Kurz's avatar Greg Kurz Committed by Michael S. Tsirkin

vhost: introduce vhost_is_little_endian() helper

Signed-off-by: default avatarGreg Kurz <gkurz@linux.vnet.ibm.com>
Signed-off-by: default avatarMichael S. Tsirkin <mst@redhat.com>
Acked-by: default avatarCornelia Huck <cornelia.huck@de.ibm.com>
Reviewed-by: default avatarDavid Gibson <david@gibson.dropbear.id.au>
parent 5da7b160
...@@ -173,34 +173,39 @@ static inline bool vhost_has_feature(struct vhost_virtqueue *vq, int bit) ...@@ -173,34 +173,39 @@ static inline bool vhost_has_feature(struct vhost_virtqueue *vq, int bit)
return vq->acked_features & (1ULL << bit); return vq->acked_features & (1ULL << bit);
} }
static inline bool vhost_is_little_endian(struct vhost_virtqueue *vq)
{
return vhost_has_feature(vq, VIRTIO_F_VERSION_1);
}
/* Memory accessors */ /* Memory accessors */
static inline u16 vhost16_to_cpu(struct vhost_virtqueue *vq, __virtio16 val) static inline u16 vhost16_to_cpu(struct vhost_virtqueue *vq, __virtio16 val)
{ {
return __virtio16_to_cpu(vhost_has_feature(vq, VIRTIO_F_VERSION_1), val); return __virtio16_to_cpu(vhost_is_little_endian(vq), val);
} }
static inline __virtio16 cpu_to_vhost16(struct vhost_virtqueue *vq, u16 val) static inline __virtio16 cpu_to_vhost16(struct vhost_virtqueue *vq, u16 val)
{ {
return __cpu_to_virtio16(vhost_has_feature(vq, VIRTIO_F_VERSION_1), val); return __cpu_to_virtio16(vhost_is_little_endian(vq), val);
} }
static inline u32 vhost32_to_cpu(struct vhost_virtqueue *vq, __virtio32 val) static inline u32 vhost32_to_cpu(struct vhost_virtqueue *vq, __virtio32 val)
{ {
return __virtio32_to_cpu(vhost_has_feature(vq, VIRTIO_F_VERSION_1), val); return __virtio32_to_cpu(vhost_is_little_endian(vq), val);
} }
static inline __virtio32 cpu_to_vhost32(struct vhost_virtqueue *vq, u32 val) static inline __virtio32 cpu_to_vhost32(struct vhost_virtqueue *vq, u32 val)
{ {
return __cpu_to_virtio32(vhost_has_feature(vq, VIRTIO_F_VERSION_1), val); return __cpu_to_virtio32(vhost_is_little_endian(vq), val);
} }
static inline u64 vhost64_to_cpu(struct vhost_virtqueue *vq, __virtio64 val) static inline u64 vhost64_to_cpu(struct vhost_virtqueue *vq, __virtio64 val)
{ {
return __virtio64_to_cpu(vhost_has_feature(vq, VIRTIO_F_VERSION_1), val); return __virtio64_to_cpu(vhost_is_little_endian(vq), val);
} }
static inline __virtio64 cpu_to_vhost64(struct vhost_virtqueue *vq, u64 val) static inline __virtio64 cpu_to_vhost64(struct vhost_virtqueue *vq, u64 val)
{ {
return __cpu_to_virtio64(vhost_has_feature(vq, VIRTIO_F_VERSION_1), val); return __cpu_to_virtio64(vhost_is_little_endian(vq), val);
} }
#endif #endif
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