linux-kernel - Re: [PATCH v7 01/10] iommu: Add pasids field in struct iommu

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Date:   Thu, 19 May 2022 19:55:13 +0800
From:   Baolu Lu <baolu.lu@...ux.intel.com>
To:     Jean-Philippe Brucker <jean-philippe@...aro.org>
Cc:     baolu.lu@...ux.intel.com, Joerg Roedel <joro@...tes.org>,
        Jason Gunthorpe <jgg@...dia.com>,
        Christoph Hellwig <hch@...radead.org>,
        Kevin Tian <kevin.tian@...el.com>,
        Ashok Raj <ashok.raj@...el.com>, Will Deacon <will@...nel.org>,
        Robin Murphy <robin.murphy@....com>,
        Jean-Philippe Brucker <jean-philippe@...aro.com>,
        Dave Jiang <dave.jiang@...el.com>,
        Vinod Koul <vkoul@...nel.org>,
        Eric Auger <eric.auger@...hat.com>,
        Liu Yi L <yi.l.liu@...el.com>,
        Jacob jun Pan <jacob.jun.pan@...el.com>,
        iommu@...ts.linux-foundation.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v7 01/10] iommu: Add pasids field in struct iommu_device

Hi Jean,

On 2022/5/19 18:37, Jean-Philippe Brucker wrote:
> 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

Done. Thank you for the reminding.

Best regards,
baolu