On Sun, Apr 11, 2021 at 01:36:18PM +0800, Yongji Xie wrote: > On Sat, Apr 10, 2021 at 12:16 AM Michael S. Tsirkin <[email protected]> wrote: > > > > On Wed, Mar 31, 2021 at 04:05:12PM +0800, Xie Yongji wrote: > > > Use vhost_dev->mutex to protect vhost device iotlb from > > > concurrent access. > > > > > > Fixes: 4c8cf318("vhost: introduce vDPA-based backend") > > > Cc: [email protected] > > > Signed-off-by: Xie Yongji <[email protected]> > > > Acked-by: Jason Wang <[email protected]> > > > Reviewed-by: Stefano Garzarella <[email protected]> > > > > I could not figure out whether there's a bug there now. > > If yes when is the concurrent access triggered? > > > > When userspace sends the VHOST_IOTLB_MSG_V2 message concurrently? > > vhost_vdpa_chr_write_iter -> vhost_chr_write_iter -> > vhost_vdpa_process_iotlb_msg() > > Thanks, > Yongji
And then what happens currently? -- MST
