> > +Note that master is not expected to issue more than one > > VHOST_USER_SET_LOG_BASE > > +request before the rings are fully stopped by the master. Thus no > > modifications > > +to log_base address are allowed before the rings are restated and the > > client > > +can ignore all subsequent VHOST_USER_SET_LOG_BASE requests after the > > log_base > > +address has been established. > > + > > Do we actually issue VHOST_USER_SET_LOG_BASE when ring is started?
Sorry, missed this question in the previous answer. Yes, actually qemu issues set_log_base() only in the process of migration, and before that rings are enabled and actively updated. > > Can we put it simpler: > > master must not send VHOST_USER_SET_LOG_BASE when ring > is started and logging of used ring writes is started. > > ?
