Re: [PATCH v2 5/7] iommufd: Make iommufd_hw_pagetable_alloc() do iopt_table_add_domain()

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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



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