Re: [PATCH v7 01/10] iommu: Add pasids field in struct iommu_device

[Jean-Philippe Brucker]

Hi Baolu,

On Thu, May 19, 2022 at 03:20:38PM +0800, Lu Baolu wrote:
> diff --git a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c
> index 88817a3376ef..6e2cd082c670 100644
> --- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c
> +++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c
> @@ -3546,6 +3546,7 @@ static int arm_smmu_device_hw_probe(struct arm_smmu_device *smmu)
>  	/* SID/SSID sizes */
>  	smmu->ssid_bits = FIELD_GET(IDR1_SSIDSIZE, reg);
>  	smmu->sid_bits = FIELD_GET(IDR1_SIDSIZE, reg);
> +	smmu->iommu.pasids = smmu->ssid_bits;

This should be 1UL << smmu->ssid_bits

Thanks,
Jean