linux-kernel - Re: [PATCH v3 3/5] iommufd/vdevice: Remove struct device reference from struct vdevice

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Message-ID: <20250704150636.GJ1410929@nvidia.com>
Date: Fri, 4 Jul 2025 12:06:36 -0300
From: Jason Gunthorpe <jgg@...dia.com>
To: Xu Yilun <yilun.xu@...ux.intel.com>
Cc: kevin.tian@...el.com, will@...nel.org, aneesh.kumar@...nel.org,
	iommu@...ts.linux.dev, linux-kernel@...r.kernel.org,
	joro@...tes.org, robin.murphy@....com, shuah@...nel.org,
	nicolinc@...dia.com, aik@....com, dan.j.williams@...el.com,
	baolu.lu@...ux.intel.com, yilun.xu@...el.com
Subject: Re: [PATCH v3 3/5] iommufd/vdevice: Remove struct device reference
 from struct vdevice

On Fri, Jun 27, 2025 at 11:38:07AM +0800, Xu Yilun wrote:
> Remove struct device *dev from struct vdevice.
> 
> The dev pointer is the Plan B for vdevice to reference the physical
> device. As now vdev->idev is added without refcounting concern, just
> use vdev->idev->dev when needed.
> 
> Signed-off-by: Xu Yilun <yilun.xu@...ux.intel.com>
> ---
>  drivers/iommu/iommufd/driver.c          | 4 ++--
>  drivers/iommu/iommufd/iommufd_private.h | 1 -
>  drivers/iommu/iommufd/viommu.c          | 3 ---
>  3 files changed, 2 insertions(+), 6 deletions(-)

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

Jason