From 1cb108994c6830cc6a6e066ad7d9a22ef59fa167 Mon Sep 17 00:00:00 2001 From: Gautam Dawar Date: Wed, 30 Mar 2022 23:33:48 +0530 Subject: vhost_iotlb: split out IOTLB initialization This patch splits out IOTLB initialization to make sure it could be reused by external modules. Signed-off-by: Jason Wang Signed-off-by: Gautam Dawar Message-Id: <20220330180436.24644-9-gdawar@xilinx.com> Signed-off-by: Michael S. Tsirkin --- drivers/vhost/iotlb.c | 23 ++++++++++++++++++----- 1 file changed, 18 insertions(+), 5 deletions(-) (limited to 'drivers/vhost') 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 @@ -125,6 +125,23 @@ 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 @@ -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; } -- cgit v1.2.3