linux-kernel - RE: [PATCH v2 09/12] iommu/vt-d: Check device list of domain in domain free path

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Message-ID: <BN9PR11MB5276A0A772A7DE19239796B38CAA9@BN9PR11MB5276.namprd11.prod.outlook.com>
Date:   Tue, 14 Jun 2022 06:57:21 +0000
From:   "Tian, Kevin" <kevin.tian@...el.com>
To:     Lu Baolu <baolu.lu@...ux.intel.com>,
        Joerg Roedel <joro@...tes.org>,
        "Raj, Ashok" <ashok.raj@...el.com>,
        Christoph Hellwig <hch@...radead.org>,
        "Jason Gunthorpe" <jgg@...dia.com>
CC:     Will Deacon <will@...nel.org>, Robin Murphy <robin.murphy@....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>
Subject: RE: [PATCH v2 09/12] iommu/vt-d: Check device list of domain in
 domain free path

> From: Lu Baolu <baolu.lu@...ux.intel.com>
> Sent: Tuesday, June 14, 2022 10:52 AM
> 
> When the IOMMU domain is about to be freed, it should not be set on any
> device. Instead of silently dealing with some bug cases, it's better to
> trigger a warning to report and fix any potential bugs at the first time.
> 
> Signed-off-by: Lu Baolu <baolu.lu@...ux.intel.com>
> Reviewed-by: Jason Gunthorpe <jgg@...dia.com>

Reviewed-by: Kevin Tian <kevin.tian@...el.com>