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    Subject[PATCH v6 28/46] vhost: make features 64 bit
    We need to use bit 32 for virtio 1.0

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

    diff --git a/drivers/vhost/vhost.h b/drivers/vhost/vhost.h
    index 3eda654..c624b09 100644
    --- a/drivers/vhost/vhost.h
    +++ b/drivers/vhost/vhost.h
    @@ -106,7 +106,7 @@ struct vhost_virtqueue {
    /* Protected by virtqueue mutex. */
    struct vhost_memory *memory;
    void *private_data;
    - unsigned acked_features;
    + u64 acked_features;
    /* Log write descriptors */
    void __user *log_base;
    struct vhost_log *log;
    @@ -174,6 +174,6 @@ enum {

    static inline int vhost_has_feature(struct vhost_virtqueue *vq, int bit)
    {
    - return vq->acked_features & (1 << bit);
    + return vq->acked_features & (1ULL << bit);
    }
    #endif
    --
    MST


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