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From: Jason Gunthorpe via iommu <iommu@lists.linux-foundation.org>
To: Jacob Pan <jacob.jun.pan@linux.intel.com>
Cc: "Tian, Kevin" <kevin.tian@intel.com>,
	Tony Luck <tony.luck@intel.com>,
	Dave Jiang <dave.jiang@intel.com>,
	Raj Ashok <ashok.raj@intel.com>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	"Kumar, Sanjay K" <sanjay.k.kumar@intel.com>,
	LKML <linux-kernel@vger.kernel.org>,
	Christoph Hellwig <hch@infradead.org>,
	iommu@lists.linux-foundation.org,
	Jacob Pan <jacob.jun.pan@intel.com>,
	Barry Song <21cnbao@gmail.com>,
	Dan Williams <dan.j.williams@intel.com>,
	Jean-Philippe Brucker <jean-philippe@linaro.com>,
	"Zanussi, Tom" <tom.zanussi@intel.com>
Subject: Re: [PATCH 3/4] iommu/vt-d: Support PASID DMA for in-kernel usage
Date: Thu, 9 Dec 2021 19:41:35 -0400	[thread overview]
Message-ID: <20211209234135.GA6385@nvidia.com> (raw)
In-Reply-To: <20211209152113.64b817b9@jacob-builder>

On Thu, Dec 09, 2021 at 03:21:13PM -0800, Jacob Pan wrote:

> For DMA PASID storage, can we store it in the iommu_domain instead of
> iommu_group?

It doesn't make sense to put in the domain, the domain should be only
the page table and not have any relation to how things are matched to
it

Jason
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iommu@lists.linux-foundation.org
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WARNING: multiple messages have this Message-ID (diff)
From: Jason Gunthorpe <jgg@nvidia.com>
To: Jacob Pan <jacob.jun.pan@linux.intel.com>
Cc: Lu Baolu <baolu.lu@linux.intel.com>,
	iommu@lists.linux-foundation.org,
	LKML <linux-kernel@vger.kernel.org>,
	Joerg Roedel <joro@8bytes.org>,
	Christoph Hellwig <hch@infradead.org>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Jean-Philippe Brucker <jean-philippe@linaro.com>,
	Jacob Pan <jacob.jun.pan@intel.com>,
	Raj Ashok <ashok.raj@intel.com>,
	"Kumar, Sanjay K" <sanjay.k.kumar@intel.com>,
	Dave Jiang <dave.jiang@intel.com>,
	Tony Luck <tony.luck@intel.com>, Yi Liu <yi.l.liu@intel.com>,
	"Tian, Kevin" <kevin.tian@intel.com>,
	Barry Song <21cnbao@gmail.com>,
	"Zanussi, Tom" <tom.zanussi@intel.com>,
	Dan Williams <dan.j.williams@intel.com>
Subject: Re: [PATCH 3/4] iommu/vt-d: Support PASID DMA for in-kernel usage
Date: Thu, 9 Dec 2021 19:41:35 -0400	[thread overview]
Message-ID: <20211209234135.GA6385@nvidia.com> (raw)
In-Reply-To: <20211209152113.64b817b9@jacob-builder>

On Thu, Dec 09, 2021 at 03:21:13PM -0800, Jacob Pan wrote:

> For DMA PASID storage, can we store it in the iommu_domain instead of
> iommu_group?

It doesn't make sense to put in the domain, the domain should be only
the page table and not have any relation to how things are matched to
it

Jason

  reply	other threads:[~2021-12-09 23:41 UTC|newest]

Thread overview: 93+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-12-07 13:47 [PATCH 0/4] Enable PASID for DMA API users Jacob Pan
2021-12-07 13:47 ` Jacob Pan
2021-12-07 13:47 ` [PATCH 1/4] ioasid: Reserve a global PASID for in-kernel DMA Jacob Pan
2021-12-07 13:47   ` Jacob Pan
2021-12-09 11:03   ` Jean-Philippe Brucker
2021-12-09 11:03     ` Jean-Philippe Brucker
2021-12-09 18:14     ` Jacob Pan
2021-12-09 18:14       ` Jacob Pan
2021-12-10  9:06       ` Jean-Philippe Brucker
2021-12-10  9:06         ` Jean-Philippe Brucker
2021-12-10 12:31         ` Jason Gunthorpe via iommu
2021-12-10 12:31           ` Jason Gunthorpe
2021-12-10 18:05           ` Jacob Pan
2021-12-10 18:05             ` Jacob Pan
2021-12-11  8:39             ` Tian, Kevin
2021-12-11  8:39               ` Tian, Kevin
2021-12-12 23:34               ` Jason Gunthorpe via iommu
2021-12-12 23:34                 ` Jason Gunthorpe
2021-12-07 13:47 ` [PATCH 2/4] iommu: Add PASID support for DMA mapping API users Jacob Pan
2021-12-07 13:47   ` Jacob Pan
2021-12-08  2:31   ` Lu Baolu
2021-12-08  2:31     ` Lu Baolu
2021-12-08 18:49     ` Jacob Pan
2021-12-08 18:49       ` Jacob Pan
2021-12-09  1:56       ` Tian, Kevin
2021-12-09  1:56         ` Tian, Kevin
2021-12-09  2:21         ` Lu Baolu
2021-12-09  2:21           ` Lu Baolu
2021-12-09 16:32           ` Jacob Pan
2021-12-09 16:32             ` Jacob Pan
2021-12-09 16:57             ` Raj, Ashok
2021-12-09 16:57               ` Raj, Ashok
2021-12-09 17:34               ` Jacob Pan
2021-12-09 17:34                 ` Jacob Pan
2021-12-07 13:47 ` [PATCH 3/4] iommu/vt-d: Support PASID DMA for in-kernel usage Jacob Pan
2021-12-07 13:47   ` Jacob Pan
2021-12-08 13:22   ` Jason Gunthorpe via iommu
2021-12-08 13:22     ` Jason Gunthorpe
2021-12-08 19:16     ` Jacob Pan
2021-12-08 19:16       ` Jacob Pan
2021-12-09  2:32       ` Lu Baolu
2021-12-09  2:32         ` Lu Baolu
2021-12-09 23:21         ` Jacob Pan
2021-12-09 23:21           ` Jacob Pan
2021-12-09 23:41           ` Jason Gunthorpe via iommu [this message]
2021-12-09 23:41             ` Jason Gunthorpe
2021-12-10  6:46           ` Lu Baolu
2021-12-10  6:46             ` Lu Baolu
2021-12-10 17:50             ` Jacob Pan
2021-12-10 17:50               ` Jacob Pan
2021-12-10 17:48               ` Jason Gunthorpe via iommu
2021-12-10 17:48                 ` Jason Gunthorpe
2021-12-10 18:18                 ` Jacob Pan
2021-12-10 18:18                   ` Jacob Pan
2021-12-10 18:53                   ` Jason Gunthorpe via iommu
2021-12-10 18:53                     ` Jason Gunthorpe
2021-12-07 13:47 ` [PATCH 4/4] dmaengine: idxd: Use DMA API for in-kernel DMA with PASID Jacob Pan
2021-12-07 13:47   ` Jacob Pan
2021-12-07 23:27   ` Dave Jiang
2021-12-07 23:27     ` Dave Jiang
2021-12-08  4:56     ` Vinod Koul
2021-12-08  4:56       ` Vinod Koul
2021-12-08 17:36       ` Jacob Pan
2021-12-08 17:36         ` Jacob Pan
2021-12-08 13:13   ` Jason Gunthorpe via iommu
2021-12-08 13:13     ` Jason Gunthorpe
2021-12-08 15:35     ` Dave Jiang
2021-12-08 15:35       ` Dave Jiang
2021-12-08 17:51       ` Jason Gunthorpe via iommu
2021-12-08 17:51         ` Jason Gunthorpe
2021-12-09  1:48         ` Tian, Kevin
2021-12-09  1:48           ` Tian, Kevin
2021-12-09 19:18           ` Jacob Pan
2021-12-09 19:18             ` Jacob Pan
2021-12-08 19:55     ` Jacob Pan
2021-12-08 19:55       ` Jacob Pan
2021-12-08 20:30       ` Jason Gunthorpe via iommu
2021-12-08 20:30         ` Jason Gunthorpe
2021-12-08 21:59         ` Jacob Pan
2021-12-08 21:59           ` Jacob Pan
2021-12-08 23:39           ` Jason Gunthorpe via iommu
2021-12-08 23:39             ` Jason Gunthorpe
2021-12-09  0:12             ` Dave Jiang
2021-12-09  0:12               ` Dave Jiang
2021-12-09  2:06               ` Tian, Kevin
2021-12-09  2:06                 ` Tian, Kevin
2021-12-08 18:37   ` kernel test robot
2021-12-08 18:37     ` kernel test robot
2021-12-08 18:37     ` kernel test robot
2021-12-08 13:10 ` [PATCH 0/4] Enable PASID for DMA API users Jason Gunthorpe via iommu
2021-12-08 13:10   ` Jason Gunthorpe
2021-12-08 18:15   ` Jacob Pan
2021-12-08 18:15     ` Jacob Pan

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