Re: [PATCH v6 09/25] iommufd/viommu: Introduce IOMMUFD_OBJ_HW_QUEUE and its related struct

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To: Nicolin Chen <nicolinc@xxxxxxxxxx>
Subject: Re: [PATCH v6 09/25] iommufd/viommu: Introduce IOMMUFD_OBJ_HW_QUEUE and its related struct
From: Jason Gunthorpe <jgg@xxxxxxxxxx>
Date: Mon, 16 Jun 2025 10:47:23 -0300
Cc: kevin.tian@xxxxxxxxx, corbet@xxxxxxx, will@xxxxxxxxxx, bagasdotme@xxxxxxxxx, robin.murphy@xxxxxxx, joro@xxxxxxxxxx, thierry.reding@xxxxxxxxx, vdumpa@xxxxxxxxxx, jonathanh@xxxxxxxxxx, shuah@xxxxxxxxxx, jsnitsel@xxxxxxxxxx, nathan@xxxxxxxxxx, peterz@xxxxxxxxxxxxx, yi.l.liu@xxxxxxxxx, mshavit@xxxxxxxxxx, praan@xxxxxxxxxx, zhangzekun11@xxxxxxxxxx, iommu@xxxxxxxxxxxxxxx, linux-doc@xxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, linux-arm-kernel@xxxxxxxxxxxxxxxxxxx, linux-tegra@xxxxxxxxxxxxxxx, linux-kselftest@xxxxxxxxxxxxxxx, patches@xxxxxxxxxxxxxxx, mochs@xxxxxxxxxx, alok.a.tiwari@xxxxxxxxxx, vasant.hegde@xxxxxxx, dwmw2@xxxxxxxxxxxxx, baolu.lu@xxxxxxxxxxxxxxx
In-reply-to: <c9ce52fdbcc7a049b6e27e93875fba4cbc516220.1749884998.git.nicolinc@nvidia.com>
References: <cover.1749884998.git.nicolinc@nvidia.com> <c9ce52fdbcc7a049b6e27e93875fba4cbc516220.1749884998.git.nicolinc@nvidia.com>

On Sat, Jun 14, 2025 at 12:14:34AM -0700, Nicolin Chen wrote:
> +struct iommufd_hw_queue {
> +	struct iommufd_object obj;
> +	struct iommufd_ctx *ictx;

Try to avoid this if we don't need it

Reviewed-by: Jason Gunthorpe <jgg@xxxxxxxxxx>

Jason

Follow-Ups:
- Re: [PATCH v6 09/25] iommufd/viommu: Introduce IOMMUFD_OBJ_HW_QUEUE and its related struct
  - From: Nicolin Chen

References:
- [PATCH v6 00/25] iommufd: Add vIOMMU infrastructure (Part-4 HW QUEUE)
  - From: Nicolin Chen
- [PATCH v6 09/25] iommufd/viommu: Introduce IOMMUFD_OBJ_HW_QUEUE and its related struct
  - From: Nicolin Chen

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