Re: [PATCH 1/2] vhost: remove the possible fruitless search on iotlb prefetch
From: Koichiro Den <hidden>
Date: 2017-08-22 14:09:44
Also in:
kvm, virtualization
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:quoted
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-quoted
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.quoted
-- 2.9.4
Ok, thanks. _______________________________________________ Virtualization mailing list Virtualization@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/virtualization