linux-kernel - Re: [PATCH v2 02/22] iommu: Pass in a driver-level user data structure to viommu

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Message-ID: <e569c927-65ff-4c0f-8922-45e404fefc5e@linux.intel.com>
Date: Sun, 27 Apr 2025 14:31:54 +0800
From: Baolu Lu <baolu.lu@...ux.intel.com>
To: Nicolin Chen <nicolinc@...dia.com>, jgg@...dia.com, kevin.tian@...el.com,
 corbet@....net, will@...nel.org
Cc: bagasdotme@...il.com, robin.murphy@....com, joro@...tes.org,
 thierry.reding@...il.com, vdumpa@...dia.com, jonathanh@...dia.com,
 shuah@...nel.org, jsnitsel@...hat.com, nathan@...nel.org,
 peterz@...radead.org, yi.l.liu@...el.com, mshavit@...gle.com,
 praan@...gle.com, zhangzekun11@...wei.com, iommu@...ts.linux.dev,
 linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
 linux-arm-kernel@...ts.infradead.org, linux-tegra@...r.kernel.org,
 linux-kselftest@...r.kernel.org, patches@...ts.linux.dev, mochs@...dia.com,
 alok.a.tiwari@...cle.com, vasant.hegde@....com
Subject: Re: [PATCH v2 02/22] iommu: Pass in a driver-level user data
 structure to viommu_alloc op

On 4/26/25 13:57, Nicolin Chen wrote:
> The new type of vIOMMU for tegra241-cmdqv needs to pass in a driver-level
> data structure from user space via iommufd, so add a user_data to the op.
> 
> Reviewed-by: Jason Gunthorpe<jgg@...dia.com>
> Signed-off-by: Nicolin Chen<nicolinc@...dia.com>

It would be better to add some words explaining what kind of user data
can be passed when allocating a vIOMMU object and the reason why this
might be necessary.

Reviewed-by: Lu Baolu <baolu.lu@...ux.intel.com>

Thanks,
baolu