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    Subject[PATCH v6 5/8] vhost: introduce vhost_is_little_endian() helper
    From
    Date
    Signed-off-by: Greg Kurz <gkurz@linux.vnet.ibm.com>
    ---
    drivers/vhost/vhost.h | 17 +++++++++++------
    1 file changed, 11 insertions(+), 6 deletions(-)

    diff --git a/drivers/vhost/vhost.h b/drivers/vhost/vhost.h
    index 8c1c792..6a49960 100644
    --- a/drivers/vhost/vhost.h
    +++ b/drivers/vhost/vhost.h
    @@ -173,34 +173,39 @@ static inline bool vhost_has_feature(struct vhost_virtqueue *vq, int 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 */
    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)
    {
    - 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)
    {
    - 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)
    {
    - 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)
    {
    - 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)
    {
    - return __cpu_to_virtio64(vhost_has_feature(vq, VIRTIO_F_VERSION_1), val);
    + return __cpu_to_virtio64(vhost_is_little_endian(vq), val);
    }
    #endif


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