linux-kernel - Re: [PATCH v12 5/5] iommu: Remove mode argument from iommu_set_dma

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Message-ID: <1b58516d-73d5-0c40-11de-58b998ec803e@linux.intel.com>
Date:   Sat, 12 Jun 2021 10:23:54 +0800
From:   Lu Baolu <baolu.lu@...ux.intel.com>
To:     John Garry <john.garry@...wei.com>, joro@...tes.org,
        will@...nel.org, dwmw2@...radead.org, robin.murphy@....com
Cc:     baolu.lu@...ux.intel.com, linux-kernel@...r.kernel.org,
        iommu@...ts.linux-foundation.org, linuxarm@...wei.com,
        thunder.leizhen@...wei.com, chenxiang66@...ilicon.com
Subject: Re: [PATCH v12 5/5] iommu: Remove mode argument from
 iommu_set_dma_strict()

On 2021/6/11 20:20, John Garry wrote:
> diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c
> index ccbd5d4c1a50..146cb71c7441 100644
> --- a/drivers/iommu/iommu.c
> +++ b/drivers/iommu/iommu.c
> @@ -350,10 +350,9 @@ static int __init iommu_dma_setup(char *str)
>   }
>   early_param("iommu.strict", iommu_dma_setup);
>   
> -void iommu_set_dma_strict(bool strict)
> +void iommu_set_dma_strict(void)
>   {
> -	if (strict || !(iommu_cmd_line & IOMMU_CMD_LINE_STRICT))
> -		iommu_dma_strict = strict;
> +		iommu_dma_strict = true;
>   }

Will this change break the functionality of iommu.strict?

Best regards,
baolu