On 2020/6/2 下午9:05, Michael S. Tsirkin wrote:

As testing shows no performance change, switch to that now.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
Link: https://lore.kernel.org/r/20200401183118.8334-3-eperezma@redhat.com (local)
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
---
  drivers/vhost/vhost.c | 251 +-----------------------------------------
  drivers/vhost/vhost.h |   4 -
  2 files changed, 2 insertions(+), 253 deletions(-)

Since we don't have a way to switch back, it's better to remove "by 
default" in the title.

Thanks