Rusty Russell wrote: > The 'disable_cb' callback is designed as an optimization to tell the host > we don't need callbacks now. As it is not reliable, the debug check is > overzealous: it can happen on two CPUs at the same time. Document this. > > Even if it were reliable, the virtio_net driver doesn't disable > callbacks on transmit so the START_USE/END_USE debugging reentrance > protection can be easily tripped even on UP. > > Thanks to Balaji Rao for the bug report and testing.
I think the printk() in start_xmit should be removed too (or at least rate limited). Regards, Anthony Liguori _______________________________________________ Virtualization mailing list Virtualization@lists.linux-foundation.org https://lists.linux-foundation.org/mailman/listinfo/virtualization
