Re: [PATCH v4 3/6] iommu/sva: Stop using ioasid_set for SVA

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To: Fenghua Yu <fenghua.yu@xxxxxxxxx>
Subject: Re: [PATCH v4 3/6] iommu/sva: Stop using ioasid_set for SVA
From: Jason Gunthorpe <jgg@xxxxxxxxxx>
Date: Mon, 20 Mar 2023 11:11:12 -0300
Cc: Jacob Pan <jacob.jun.pan@xxxxxxxxxxxxxxx>, Baolu Lu <baolu.lu@xxxxxxxxxxxxxxx>, Jean-Philippe Brucker <jean-philippe@xxxxxxxxxx>, LKML <linux-kernel@xxxxxxxxxxxxxxx>, iommu@xxxxxxxxxxxxxxx, Joerg Roedel <joro@xxxxxxxxxx>, Jean-Philippe Brucker <jean-philippe@xxxxxxxxxx>, Dave Hansen <dave.hansen@xxxxxxxxx>, Thomas Gleixner <tglx@xxxxxxxxxxxxx>, X86 Kernel <x86@xxxxxxxxxx>, bp@xxxxxxxxx, "H. Peter Anvin" <hpa@xxxxxxxxx>, Peter Zijlstra <peterz@xxxxxxxxxxxxx>, corbet@xxxxxxx, vkoul@xxxxxxxxxx, dmaengine@xxxxxxxxxxxxxxx, linux-doc@xxxxxxxxxxxxxxx, Robin Murphy <robin.murphy@xxxxxxx>, Will Deacon <will@xxxxxxxxxx>, David Woodhouse <dwmw2@xxxxxxxxxxxxx>, Raj Ashok <ashok.raj@xxxxxxxxx>, "Tian, Kevin" <kevin.tian@xxxxxxxxx>, Yi Liu <yi.l.liu@xxxxxxxxx>, Dave Jiang <dave.jiang@xxxxxxxxx>, Kirill Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx>
In-reply-to: <3050c4a3-8ced-2469-4546-4af9620d3363@intel.com>
References: <20230301235646.2692846-4-jacob.jun.pan@linux.intel.com> <3b7fb4d3-1fe9-a3be-46ad-c271be9f96c7@linux.intel.com> <20230302091707.58d59964@jacob-builder> <794c7dad-2e62-3afa-ea10-92179b0d1659@linux.intel.com> <20230303093235.GB361458@myrica> <3b2c6fe9-821f-9b84-acb6-777e8517a0fc@linux.intel.com> <ZAHzAa0mnilf0N9K@nvidia.com> <20230307143209.2873d9e2@jacob-builder> <ZAjSsm4/PDRqViwa@nvidia.com> <3050c4a3-8ced-2469-4546-4af9620d3363@intel.com>

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

References:
- [PATCH v4 3/6] iommu/sva: Stop using ioasid_set for SVA
  - From: Jacob Pan
- Re: [PATCH v4 3/6] iommu/sva: Stop using ioasid_set for SVA
  - From: Baolu Lu
- Re: [PATCH v4 3/6] iommu/sva: Stop using ioasid_set for SVA
  - From: Jacob Pan
- Re: [PATCH v4 3/6] iommu/sva: Stop using ioasid_set for SVA
  - From: Baolu Lu
- Re: [PATCH v4 3/6] iommu/sva: Stop using ioasid_set for SVA
  - From: Jean-Philippe Brucker
- Re: [PATCH v4 3/6] iommu/sva: Stop using ioasid_set for SVA
  - From: Baolu Lu
- Re: [PATCH v4 3/6] iommu/sva: Stop using ioasid_set for SVA
  - From: Jason Gunthorpe
- Re: [PATCH v4 3/6] iommu/sva: Stop using ioasid_set for SVA
  - From: Jacob Pan
- Re: [PATCH v4 3/6] iommu/sva: Stop using ioasid_set for SVA
  - From: Jason Gunthorpe
- Re: [PATCH v4 3/6] iommu/sva: Stop using ioasid_set for SVA
  - From: Fenghua Yu

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