linux-kernel - Re: [PATCH v13 4/8] iommu/vt-d: Add bind guest PASID support

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Date:   Fri, 15 May 2020 09:01:33 +0800
From:   Lu Baolu <baolu.lu@...ux.intel.com>
To:     Jacob Pan <jacob.jun.pan@...ux.intel.com>,
        Christoph Hellwig <hch@...radead.org>
Cc:     baolu.lu@...ux.intel.com, iommu@...ts.linux-foundation.org,
        LKML <linux-kernel@...r.kernel.org>,
        Joerg Roedel <joro@...tes.org>,
        David Woodhouse <dwmw2@...radead.org>,
        Jean-Philippe Brucker <jean-philippe@...aro.com>,
        Eric Auger <eric.auger@...hat.com>,
        Yi Liu <yi.l.liu@...el.com>,
        "Tian, Kevin" <kevin.tian@...el.com>,
        Raj Ashok <ashok.raj@...el.com>,
        Alex Williamson <alex.williamson@...hat.com>,
        Jonathan Cameron <jic23@...nel.org>
Subject: Re: [PATCH v13 4/8] iommu/vt-d: Add bind guest PASID support

Hi Jacob,

On 5/14/20 11:57 PM, Jacob Pan wrote:
>>> +	/*
>>> +	 * PASID table is per device for better security.
>>> Therefore, for
>>> +	 * each bind of a new device even with an existing PASID,
>>> we need to
>>> +	 * call the nested mode setup function here.
>>> +	 */
>>> +	spin_lock(&iommu->lock);
>>> +	ret = intel_pasid_setup_nested(iommu,
>>> +				       dev,
>>> +				       (pgd_t *)data->gpgd,
>>> +				       data->hpasid,
>>> +				       &data->vtd,
>>> +				       dmar_domain,
>>> +				       data->addr_width);
>> Why not:
>>
>> 	et = intel_pasid_setup_nested(iommu, dev, (pgd_t *)data->gpgd,
>> 			data->hpasid, &data->vtd, dmar_domain,
>> 			data->addr_width);
>>
>> ?
>>
> I thought we want to align the parentheses? Either way is fine.
> Baolu?
> 

Let's keep the code style consistent in this file.

Best regards,
baolu