| Message ID | 20210315053721.189-4-xieyongji@bytedance.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | Introduce VDUSE - vDPA Device in Userspace | expand |
在 2021/3/15 下午1:37, Xie Yongji 写道: > Use vhost_dev->mutex to protect vhost device iotlb from > concurrent access. > > Fixes: 4c8cf318("vhost: introduce vDPA-based backend") > Signed-off-by: Xie Yongji <xieyongji@bytedance.com> Acked-by: Jason Wang <jasowang@redhat.com> Please cc stable for next version. Thanks > --- > drivers/vhost/vdpa.c | 6 +++++- > 1 file changed, 5 insertions(+), 1 deletion(-) > > diff --git a/drivers/vhost/vdpa.c b/drivers/vhost/vdpa.c > index cb14c66eb2ec..3f7175c2ac24 100644 > --- a/drivers/vhost/vdpa.c > +++ b/drivers/vhost/vdpa.c > @@ -719,9 +719,11 @@ static int vhost_vdpa_process_iotlb_msg(struct vhost_dev *dev, > const struct vdpa_config_ops *ops = vdpa->config; > int r = 0; > > + mutex_lock(&dev->mutex); > + > r = vhost_dev_check_owner(dev); > if (r) > - return r; > + goto unlock; > > switch (msg->type) { > case VHOST_IOTLB_UPDATE: > @@ -742,6 +744,8 @@ static int vhost_vdpa_process_iotlb_msg(struct vhost_dev *dev, > r = -EINVAL; > break; > } > +unlock: > + mutex_unlock(&dev->mutex); > > return r; > }
On Tue, Mar 23, 2021 at 11:02 AM Jason Wang <jasowang@redhat.com> wrote: > > > 在 2021/3/15 下午1:37, Xie Yongji 写道: > > Use vhost_dev->mutex to protect vhost device iotlb from > > concurrent access. > > > > Fixes: 4c8cf318("vhost: introduce vDPA-based backend") > > Signed-off-by: Xie Yongji <xieyongji@bytedance.com> > > > Acked-by: Jason Wang <jasowang@redhat.com> > > Please cc stable for next version. > Sure. Thanks, Yongji
On Mon, Mar 15, 2021 at 01:37:13PM +0800, Xie Yongji wrote: >Use vhost_dev->mutex to protect vhost device iotlb from >concurrent access. > >Fixes: 4c8cf318("vhost: introduce vDPA-based backend") >Signed-off-by: Xie Yongji <xieyongji@bytedance.com> >--- > drivers/vhost/vdpa.c | 6 +++++- > 1 file changed, 5 insertions(+), 1 deletion(-) Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
diff --git a/drivers/vhost/vdpa.c b/drivers/vhost/vdpa.c index cb14c66eb2ec..3f7175c2ac24 100644 --- a/drivers/vhost/vdpa.c +++ b/drivers/vhost/vdpa.c @@ -719,9 +719,11 @@ static int vhost_vdpa_process_iotlb_msg(struct vhost_dev *dev, const struct vdpa_config_ops *ops = vdpa->config; int r = 0; + mutex_lock(&dev->mutex); + r = vhost_dev_check_owner(dev); if (r) - return r; + goto unlock; switch (msg->type) { case VHOST_IOTLB_UPDATE: @@ -742,6 +744,8 @@ static int vhost_vdpa_process_iotlb_msg(struct vhost_dev *dev, r = -EINVAL; break; } +unlock: + mutex_unlock(&dev->mutex); return r; }
Use vhost_dev->mutex to protect vhost device iotlb from concurrent access. Fixes: 4c8cf318("vhost: introduce vDPA-based backend") Signed-off-by: Xie Yongji <xieyongji@bytedance.com> --- drivers/vhost/vdpa.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-)