linux-kernel - RE: [PATCH v11 7/8] iommu/vt-d: Add set_dev

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Message-ID: <BN9PR11MB52761E88986259521CA00F668C01A@BN9PR11MB5276.namprd11.prod.outlook.com>
Date:   Thu, 27 Jul 2023 05:48:35 +0000
From:   "Tian, Kevin" <kevin.tian@...el.com>
To:     Jacob Pan <jacob.jun.pan@...ux.intel.com>,
        LKML <linux-kernel@...r.kernel.org>,
        "iommu@...ts.linux.dev" <iommu@...ts.linux.dev>,
        Lu Baolu <baolu.lu@...ux.intel.com>,
        Joerg Roedel <joro@...tes.org>,
        Jean-Philippe Brucker <jean-philippe@...aro.com>,
        "Robin Murphy" <robin.murphy@....com>
CC:     Jason Gunthorpe <jgg@...dia.com>, Will Deacon <will@...nel.org>,
        "Liu, Yi L" <yi.l.liu@...el.com>,
        "Yu, Fenghua" <fenghua.yu@...el.com>,
        "Luck, Tony" <tony.luck@...el.com>
Subject: RE: [PATCH v11 7/8] iommu/vt-d: Add set_dev_pasid callback for dma
 domain

> From: Jacob Pan <jacob.jun.pan@...ux.intel.com>
> Sent: Tuesday, July 25, 2023 6:26 AM
> 
> From: Lu Baolu <baolu.lu@...ux.intel.com>
> 
> This allows the upper layers to set a domain to a PASID of a device
> if the PASID feature is supported by the IOMMU hardware. The typical
> use cases are, for example, kernel DMA with PASID and hardware
> assisted mediated device drivers.
> 
> The attaching device and pasid information is tracked in a per-domain
> list and is used for IOTLB and devTLB invalidation.
> 
> Signed-off-by: Lu Baolu <baolu.lu@...ux.intel.com>
> Signed-off-by: Jacob Pan <jacob.jun.pan@...ux.intel.com>

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