On Mon, 2017-08-21 at 22:45 +0300, Michael S. Tsirkin wrote: > On Sat, Aug 19, 2017 at 03:41:14PM +0900, Koichiro Den wrote: > > Signed-off-by: Koichiro Den <den@xxxxxxxxxxxxx> > > --- > > 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; > > This works but it probably makes sense to just refactor the code to make end > of > range a variable. I posted a patch like this, pls take a look. > > > -- > > 2.9.4 > > Ok, thanks.