[PATCH v7 28/46] vhost: make features 64 bit

Michael S. Tsirkin
2014-11-30T15:12:01Z

We need to use bit 32 for virtio 1.0

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Jason Wang <jasowang@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