linux-kernel - RE: [PATCH v7 03/10] iommu/sva: Add iommu_sva

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Message-ID: <BN9PR11MB5276D2DFFBFB4C57FA3854798CD79@BN9PR11MB5276.namprd11.prod.outlook.com>
Date:   Tue, 24 May 2022 09:44:08 +0000
From:   "Tian, Kevin" <kevin.tian@...el.com>
To:     Baolu Lu <baolu.lu@...ux.intel.com>,
        Joerg Roedel <joro@...tes.org>,
        Jason Gunthorpe <jgg@...dia.com>,
        Christoph Hellwig <hch@...radead.org>,
        "Raj, Ashok" <ashok.raj@...el.com>, Will Deacon <will@...nel.org>,
        "Robin Murphy" <robin.murphy@....com>,
        Jean-Philippe Brucker <jean-philippe@...aro.com>,
        "Jiang, Dave" <dave.jiang@...el.com>, Vinod Koul <vkoul@...nel.org>
CC:     Eric Auger <eric.auger@...hat.com>,
        "Liu, Yi L" <yi.l.liu@...el.com>,
        "Pan, Jacob jun" <jacob.jun.pan@...el.com>,
        "iommu@...ts.linux-foundation.org" <iommu@...ts.linux-foundation.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "Jean-Philippe Brucker" <jean-philippe@...aro.org>
Subject: RE: [PATCH v7 03/10] iommu/sva: Add iommu_sva_domain support

> From: Baolu Lu <baolu.lu@...ux.intel.com>
> Sent: Monday, May 23, 2022 3:13 PM
> > @@ -254,6 +259,7 @@ struct iommu_ops {
> >   	int (*def_domain_type)(struct device *dev);
> >
> >   	const struct iommu_domain_ops *default_domain_ops;
> > +	const struct iommu_domain_ops *sva_domain_ops;
> 
> Per Joerg's comment in anther thread,
> 
> https://lore.kernel.org/linux-iommu/YodVJ7ervpIdWfg+@8bytes.org/
> 
> adding a sva_domain_ops here is not the right way to go.
> 
> If no objection, I will make the sva domain go through the
> generic domain_alloc/free() callbacks in the next version.
> 

suppose it's just back to what v1-v6 did which all registered the ops
in domain_alloc() callback?