linux-kernel - RE: [PATCH v8 3/7] iommu/sva: Remove PASID to mm lookup function

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Message-ID: <BN9PR11MB5276C5D73B341655C3DA9B908C849@BN9PR11MB5276.namprd11.prod.outlook.com>
Date:   Fri, 24 Mar 2023 02:45:27 +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>,
        Jason Gunthorpe <jgg@...dia.com>,
        Lu Baolu <baolu.lu@...ux.intel.com>,
        Joerg Roedel <joro@...tes.org>,
        "Jean-Philippe Brucker" <jean-philippe@...aro.com>,
        Robin Murphy <robin.murphy@....com>,
        "Hansen, Dave" <dave.hansen@...el.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        X86 Kernel <x86@...nel.org>, "bp@...en8.de" <bp@...en8.de>,
        "H. Peter Anvin" <hpa@...or.com>,
        Peter Zijlstra <peterz@...radead.org>,
        "corbet@....net" <corbet@....net>,
        "vkoul@...nel.org" <vkoul@...nel.org>,
        "dmaengine@...r.kernel.org" <dmaengine@...r.kernel.org>,
        "linux-doc@...r.kernel.org" <linux-doc@...r.kernel.org>
CC:     Will Deacon <will@...nel.org>,
        David Woodhouse <dwmw2@...radead.org>,
        "Raj, Ashok" <ashok.raj@...el.com>,
        "Liu, Yi L" <yi.l.liu@...el.com>,
        "Yu, Fenghua" <fenghua.yu@...el.com>,
        "Jiang, Dave" <dave.jiang@...el.com>,
        "Kirill Shutemov" <kirill.shutemov@...ux.intel.com>,
        "Luck, Tony" <tony.luck@...el.com>
Subject: RE: [PATCH v8 3/7] iommu/sva: Remove PASID to mm lookup function

> From: Jacob Pan <jacob.jun.pan@...ux.intel.com>
> Sent: Thursday, March 23, 2023 4:08 AM
> 
> There is no user of iommu_sva_find() function, remove it so that PASID
> allocator can be a simple IDA. Device drivers are expected to store
> and keep track of their own PASID metadata.
> 
> Reviewed-by: Lu Baolu <baolu.lu@...ux.intel.com>
> Signed-off-by: Jason Gunthorpe<jgg@...dia.com>
> Signed-off-by: Jacob Pan <jacob.jun.pan@...ux.intel.com>

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