linux-kernel - Re: [PATCH v2] iommu: Set owner token to SVA domain

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Message-ID: <20231208134024.GV1489931@ziepe.ca>
Date:   Fri, 8 Dec 2023 09:40:24 -0400
From:   Jason Gunthorpe <jgg@...pe.ca>
To:     Lu Baolu <baolu.lu@...ux.intel.com>
Cc:     Joerg Roedel <joro@...tes.org>, Will Deacon <will@...nel.org>,
        Robin Murphy <robin.murphy@....com>,
        Kevin Tian <kevin.tian@...el.com>, iommu@...ts.linux.dev,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] iommu: Set owner token to SVA domain

On Fri, Dec 08, 2023 at 09:53:14AM +0800, Lu Baolu wrote:
> Commit a9c362db3920 ("iommu: Validate that devices match domains") added
> an owner token to the iommu_domain. This token is checked during domain
> attachment to RID or PASID through the generic iommu interfaces.
> 
> The SVA domains are attached to PASIDs through those iommu interfaces.
> Therefore, they require the owner token to be set during allocation.
> Otherwise, they fail to attach.
> 
> Set the owner token for SVA domains.
> 
> Fixes: a9c362db3920 ("iommu: Validate that devices match domains")
> Cc: Robin Murphy <robin.murphy@....com>
> Signed-off-by: Lu Baolu <baolu.lu@...ux.intel.com>
> ---
>  drivers/iommu/iommu.c | 1 +
>  1 file changed, 1 insertion(+)

Reviewed-by: Jason Gunthorpe <jgg@...dia.com>

Jason