diff options
| -rw-r--r-- | drivers/vhost/iotlb.c | 23 | ||||
| -rw-r--r-- | include/linux/vhost_iotlb.h | 2 |
2 files changed, 20 insertions, 5 deletions
diff --git a/drivers/vhost/iotlb.c b/drivers/vhost/iotlb.c index 5829cf2d0552..ea61330a3431 100644 --- a/drivers/vhost/iotlb.c +++ b/drivers/vhost/iotlb.c @@ -126,6 +126,23 @@ void vhost_iotlb_del_range(struct vhost_iotlb *iotlb, u64 start, u64 last) EXPORT_SYMBOL_GPL(vhost_iotlb_del_range); /** + * vhost_iotlb_init - initialize a vhost IOTLB + * @iotlb: the IOTLB that needs to be initialized + * @limit: maximum number of IOTLB entries + * @flags: VHOST_IOTLB_FLAG_XXX + */ +void vhost_iotlb_init(struct vhost_iotlb *iotlb, unsigned int limit, + unsigned int flags) +{ + iotlb->root = RB_ROOT_CACHED; + iotlb->limit = limit; + iotlb->nmaps = 0; + iotlb->flags = flags; + INIT_LIST_HEAD(&iotlb->list); +} +EXPORT_SYMBOL_GPL(vhost_iotlb_init); + +/** * vhost_iotlb_alloc - add a new vhost IOTLB * @limit: maximum number of IOTLB entries * @flags: VHOST_IOTLB_FLAG_XXX @@ -139,11 +156,7 @@ struct vhost_iotlb *vhost_iotlb_alloc(unsigned int limit, unsigned int flags) if (!iotlb) return NULL; - iotlb->root = RB_ROOT_CACHED; - iotlb->limit = limit; - iotlb->nmaps = 0; - iotlb->flags = flags; - INIT_LIST_HEAD(&iotlb->list); + vhost_iotlb_init(iotlb, limit, flags); return iotlb; } diff --git a/include/linux/vhost_iotlb.h b/include/linux/vhost_iotlb.h index 2d0e2f52f938..e79a40838998 100644 --- a/include/linux/vhost_iotlb.h +++ b/include/linux/vhost_iotlb.h @@ -36,6 +36,8 @@ int vhost_iotlb_add_range(struct vhost_iotlb *iotlb, u64 start, u64 last, u64 addr, unsigned int perm); void vhost_iotlb_del_range(struct vhost_iotlb *iotlb, u64 start, u64 last); +void vhost_iotlb_init(struct vhost_iotlb *iotlb, unsigned int limit, + unsigned int flags); struct vhost_iotlb *vhost_iotlb_alloc(unsigned int limit, unsigned int flags); void vhost_iotlb_free(struct vhost_iotlb *iotlb); void vhost_iotlb_reset(struct vhost_iotlb *iotlb); |