linux-kernel - Re: [PATCH v5 7/7] iommu: Clean up open-coded ownership checks

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Message-ID: <20231012125746.GB12142@willie-the-truck>
Date:   Thu, 12 Oct 2023 13:57:46 +0100
From:   Will Deacon <will@...nel.org>
To:     Robin Murphy <robin.murphy@....com>
Cc:     joro@...tes.org, iommu@...ts.linux.dev, jgg@...dia.com,
        baolu.lu@...ux.intel.com, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v5 7/7] iommu: Clean up open-coded ownership checks

On Wed, Oct 11, 2023 at 07:14:54PM +0100, Robin Murphy wrote:
> Some drivers already implement their own defence against the possibility
> of being given someone else's device. Since this is now taken care of by
> the core code (and via a slightly different path from the original
> fwspec-based idea), let's clean them up.
> 
> Reviewed-by: Jason Gunthorpe <jgg@...dia.com>
> Signed-off-by: Robin Murphy <robin.murphy@....com>
> ---
>  drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c |  3 ---
>  drivers/iommu/arm/arm-smmu/arm-smmu.c       |  9 +--------
>  drivers/iommu/arm/arm-smmu/qcom_iommu.c     | 16 +++-------------
>  drivers/iommu/mtk_iommu.c                   |  7 +------
>  drivers/iommu/mtk_iommu_v1.c                |  3 ---
>  drivers/iommu/sprd-iommu.c                  |  8 +-------
>  drivers/iommu/virtio-iommu.c                |  3 ---
>  7 files changed, 6 insertions(+), 43 deletions(-)

Acked-by: Will Deacon <will@...nel.org>

Will