[PATCH v3 3/3] iommu/arm-smmu-v3: Allow ATS to be always on

Tian, Kevin kevin.tian at intel.com
Tue Mar 31 01:40:17 PDT 2026


> From: Nicolin Chen <nicolinc at nvidia.com>
> Sent: Saturday, March 7, 2026 7:41 AM
> 
> +
> +	master->ats_always_on = true;
> +
> +	ret = arm_smmu_alloc_cd_tables(master);
> +	if (ret)
> +		return ret;
> +
> +out_prepare:
> +	pci_prepare_ats(pdev, stu);
> +	return 0;

is there a problem leaving ats_always_on being true while
allocating cd tables fails?



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