On Thu, Sep 24, 2020 at 03:26:08PM +0800, Jason Wang wrote: > > On 2020/9/24 下午3:16, Eli Cohen wrote: > > On Thu, Sep 24, 2020 at 11:21:02AM +0800, Jason Wang wrote: > > > Commit 653055b9acd4 ("vhost-vdpa: support get/set backend features") > > > introduces two malfunction backend features ioctls: > > > > > > 1) the ioctls was blindly added to vring ioctl instead of vdpa device > > > ioctl > > > 2) vhost_set_backend_features() was called when dev mutex has already > > > been held which will lead a deadlock > > > > > I assume this patch requires some patch in qemu as well. Do you have > > such patch? > > > > It's this series: [PATCH 0/3] Vhost-vDPA: batch IOTLB updating. > > You were copied. > Right, I miss those. Thanks.