On Thu, Apr 16, 2020 at 12:28:52AM -0700, Christoph Hellwig wrote: > > + rcu_read_lock(); > > + hlist_for_each_entry_rcu(bond, &io_mm->devices, mm_node) > > + io_mm->ops->invalidate(bond->sva.dev, io_mm->pasid, io_mm->ctx, > > + start, end - start); > > + rcu_read_unlock(); > > +} > > What is the reason that the devices don't register their own notifiers? > This kinds of multiplexing is always rather messy, and you do it for > all the methods. This sends TLB and ATC invalidations through the IOMMU, it doesn't go through device drivers Thanks, Jean
