Date:   Mon, 20 Mar 2023 11:11:12 -0300
From:   Jason Gunthorpe <jgg@nvidia.com>
To:     Fenghua Yu <fenghua.yu@intel.com>
Cc:     Jacob Pan <jacob.jun.pan@linux.intel.com>,
        Baolu Lu <baolu.lu@linux.intel.com>,
        Jean-Philippe Brucker <jean-philippe@linaro.org>,
        LKML <linux-kernel@vger.kernel.org>, iommu@lists.linux.dev,
        Joerg Roedel <joro@8bytes.org>,
        Jean-Philippe Brucker <jean-philippe@linaro.com>,
        Dave Hansen <dave.hansen@intel.com>,
        Thomas Gleixner <tglx@linutronix.de>,
        X86 Kernel <x86@kernel.org>, bp@alien8.de,
        "H. Peter Anvin" <hpa@zytor.com>,
        Peter Zijlstra <peterz@infradead.org>, corbet@lwn.net,
        vkoul@kernel.org, dmaengine@vger.kernel.org,
        linux-doc@vger.kernel.org, Robin Murphy <robin.murphy@arm.com>,
        Will Deacon <will@kernel.org>,
        David Woodhouse <dwmw2@infradead.org>,
        Raj Ashok <ashok.raj@intel.com>,
        "Tian, Kevin" <kevin.tian@intel.com>, Yi Liu <yi.l.liu@intel.com>,
        Dave Jiang <dave.jiang@intel.com>,
        Kirill Shutemov <kirill.shutemov@linux.intel.com>
Subject: Re: [PATCH v4 3/6] iommu/sva: Stop using ioasid_set for SVA
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On Sat, Mar 11, 2023 at 09:18:30AM -0800, Fenghua Yu wrote:

> Ok. I will maintain mm and find mm from PASID inside IDXD driver. And will
> implement accessing the remote mm inside IDXD driver although the
> implementation will have duplicate code as access_remote_vm().

If you really need it and it really makes sense, then export it 

Jason