Thread (4 messages) 4 messages, 3 authors, 2017-08-22
STALE3209d

[PATCH 1/2] vhost: remove the possible fruitless search on iotlb prefetch

From: Koichiro Den <hidden>
Date: 2017-08-19 06:41:14
Also in: kvm, virtualization
Subsystem: the rest, virtio host (vhost) · Maintainers: Linus Torvalds, "Michael S. Tsirkin", Jason Wang

Signed-off-by: Koichiro Den <redacted>
---
 drivers/vhost/vhost.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c
index e4613a3c362d..93e909afc1c3 100644
--- a/drivers/vhost/vhost.c
+++ b/drivers/vhost/vhost.c
@@ -1184,7 +1184,7 @@ static int iotlb_access_ok(struct vhost_virtqueue *vq,
 	while (len > s) {
 		node = vhost_umem_interval_tree_iter_first(&umem->umem_tree,
 							   addr,
-							   addr + len - 1);
+							   addr + len - s - 1);
 		if (node == NULL || node->start > addr) {
 			vhost_iotlb_miss(vq, addr, access);
 			return false;
-- 
2.9.4
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