On Fri, Feb 24, 2023 at 06:35:22AM +0000, Tian, Kevin wrote: > > From: Jason Gunthorpe <jgg@xxxxxxxxxx> > > Sent: Thursday, February 23, 2023 5:03 AM > > > > +static int iommufd_device_do_attach(struct iommufd_device *idev, > > + struct iommufd_hw_pagetable *hwpt) > > +{ > > + int rc; > > + > > + mutex_lock(&hwpt->devices_lock); > > + rc = iommufd_hw_pagetable_attach(hwpt, idev); > > + if (rc) > > + goto out_unlock; > > > > idev->hwpt = hwpt; > > refcount_inc(&hwpt->obj.users); > > + /* hwpt->devices is all domains that have been attached */ > > list_add(&idev->devices_item, &hwpt->devices); > > s/domains/devices/ > > but I didn't see what additional info this comment actually > give in this place. It's there in a function name xxx_attach then > certainly every device in that list has been attached. > > > + > > + rc = iopt_table_add_domain(&hwpt->ioas->iopt, hwpt->domain); > > + if (rc) > > + goto out_detach; > > + > > + /* ioas->hwpt_list is hwpts after iopt_table_add_domain() */ > > + list_add_tail(&hwpt->hwpt_item, &hwpt->ioas->hwpt_list); > > again the comment is meaningless Okay I just deleted them Thanks, Jason