linux-kernel - RE: [PATCH 1/7] iommu/vt-d: Allocate pasid table in device probe path

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Message-ID: <BN9PR11MB5276E7FCC95748AFC30161628C3A9@BN9PR11MB5276.namprd11.prod.outlook.com>
Date:   Sat, 5 Nov 2022 01:33:32 +0000
From:   "Tian, Kevin" <kevin.tian@...el.com>
To:     Baolu Lu <baolu.lu@...ux.intel.com>,
        "iommu@...ts.linux.dev" <iommu@...ts.linux.dev>
CC:     Joerg Roedel <joro@...tes.org>, Will Deacon <will@...nel.org>,
        "Robin Murphy" <robin.murphy@....com>,
        "Liu, Yi L" <yi.l.liu@...el.com>,
        "Pan, Jacob jun" <jacob.jun.pan@...el.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH 1/7] iommu/vt-d: Allocate pasid table in device probe path

> From: Baolu Lu <baolu.lu@...ux.intel.com>
> Sent: Saturday, November 5, 2022 9:10 AM
> 
> On 2022/11/4 10:06, Tian, Kevin wrote:
> >> From: Lu Baolu <baolu.lu@...ux.intel.com>
> >> Sent: Thursday, November 3, 2022 1:53 PM
> >>
> >> @@ -4513,6 +4506,16 @@ static struct iommu_device
> >> *intel_iommu_probe_device(struct device *dev)
> >>
> >>   	dev_iommu_priv_set(dev, info);
> >>
> >> +	if (sm_supported(iommu) && !dev_is_real_dma_subdevice(dev)) {
> >> +		ret = intel_pasid_alloc_table(dev);
> >> +		if (ret) {
> >> +			dev_err(dev, "PASID table allocation failed\n");
> >> +			dev_iommu_priv_set(dev, NULL);
> >> +			kfree(info);
> >> +			return ERR_PTR(ret);
> >> +		}
> >> +	}
> >> +
> >
> > move the added lines before dev_iommu_priv_set()
> 
> intel_pasid_alloc_table() needs to reference info and store the pasid
> table into it.
> 

Yes, I overlooked it.

Reviewed-by: Kevin Tian <kevin.tian@...el.com>