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From: Jason Gunthorpe <jgg@nvidia.com>
To: "Tian, Kevin" <kevin.tian@intel.com>
Cc: Baolu Lu <baolu.lu@linux.intel.com>,
	Joerg Roedel <joro@8bytes.org>,
	Christoph Hellwig <hch@infradead.org>,
	"Raj, Ashok" <ashok.raj@intel.com>, Will Deacon <will@kernel.org>,
	Robin Murphy <robin.murphy@arm.com>,
	Jean-Philippe Brucker <jean-philippe@linaro.com>,
	"Jiang, Dave" <dave.jiang@intel.com>,
	Vinod Koul <vkoul@kernel.org>, Eric Auger <eric.auger@redhat.com>,
	"Liu, Yi L" <yi.l.liu@intel.com>,
	"Pan, Jacob jun" <jacob.jun.pan@intel.com>,
	Zhangfei Gao <zhangfei.gao@linaro.org>,
	"Zhu, Tony" <tony.zhu@intel.com>,
	"iommu@lists.linux.dev" <iommu@lists.linux.dev>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	Jean-Philippe Brucker <jean-philippe@linaro.org>
Subject: Re: [PATCH v10 04/12] iommu: Add attach/detach_dev_pasid iommu interface
Date: Thu, 28 Jul 2022 08:59:45 -0300	[thread overview]
Message-ID: <YuJ6MXoNTj0RKCb8@nvidia.com> (raw)
In-Reply-To: <BN9PR11MB52766C3D37FA985DEBDC30C78C969@BN9PR11MB5276.namprd11.prod.outlook.com>

On Thu, Jul 28, 2022 at 03:06:47AM +0000, Tian, Kevin wrote:

> > Then we don't need this weirdo check in the core iommu code at all.
> 
> and then we could also move group->pasid_array to device->pasid_array
> with this approach. Though the end result doesn't change i.e. still only
> the singleton group can enable pasid the iommu core can just stick to
> the device manner now.

I don't see why, the group is still logically the unit of attachment
in the iommu area, and if we have a multi-device group it just means
we iterate over all the devices in the group when doing pasid set, no
different than a RID.

Jason

  reply	other threads:[~2022-07-28 16:59 UTC|newest]

Thread overview: 90+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-07-05  5:06 [PATCH v10 00/12] iommu: SVA and IOPF refactoring Lu Baolu
2022-07-05  5:06 ` [PATCH v10 01/12] iommu: Add max_pasids field in struct iommu_device Lu Baolu
2022-07-23 13:57   ` Jason Gunthorpe
2022-07-31 11:54   ` Yi Liu
2022-07-31 13:33     ` Baolu Lu
2022-07-05  5:07 ` [PATCH v10 02/12] iommu: Add max_pasids field in struct dev_iommu Lu Baolu
2022-07-23 14:02   ` Jason Gunthorpe
2022-07-31 11:55   ` Yi Liu
2022-07-05  5:07 ` [PATCH v10 03/12] iommu: Remove SVM_FLAG_SUPERVISOR_MODE support Lu Baolu
2022-07-31 12:01   ` Yi Liu
2022-07-31 13:39     ` Baolu Lu
2022-07-05  5:07 ` [PATCH v10 04/12] iommu: Add attach/detach_dev_pasid iommu interface Lu Baolu
2022-07-07  1:51   ` Tian, Kevin
2022-07-23 14:11   ` Jason Gunthorpe
2022-07-24  7:03     ` Baolu Lu
2022-07-25 14:40       ` Jason Gunthorpe
2022-07-26  6:23         ` Baolu Lu
2022-07-26 13:57           ` Jason Gunthorpe
2022-07-27  3:20             ` Tian, Kevin
2022-07-27 11:53               ` Jason Gunthorpe
2022-07-28  3:06                 ` Tian, Kevin
2022-07-28 11:59                   ` Jason Gunthorpe [this message]
2022-07-29  2:49                     ` Baolu Lu
2022-07-29  2:56                       ` Tian, Kevin
2022-07-29  3:20                         ` Baolu Lu
2022-07-29  4:22                           ` Tian, Kevin
2022-07-30  6:17                             ` Baolu Lu
2022-07-29  2:51                     ` Tian, Kevin
2022-07-29 12:22                       ` Jason Gunthorpe
2022-07-30  6:23                         ` Baolu Lu
2022-07-28  2:44             ` Baolu Lu
2022-07-28  6:27               ` Baolu Lu
2022-08-02  2:19             ` Baolu Lu
2022-08-02 12:37               ` Jason Gunthorpe
2022-08-03 13:07                 ` Baolu Lu
2022-08-03 19:03                   ` Jason Gunthorpe
2022-08-04  2:03                     ` Tian, Kevin
2022-08-04  2:42                     ` Baolu Lu
2022-07-24  7:23     ` Baolu Lu
2022-07-24  8:39     ` Baolu Lu
2022-07-24  9:13     ` Baolu Lu
2022-07-25  7:46       ` Tian, Kevin
2022-07-25 10:11         ` Baolu Lu
2022-07-31 12:10   ` Yi Liu
2022-07-05  5:07 ` [PATCH v10 05/12] iommu: Add IOMMU SVA domain support Lu Baolu
2022-07-07  1:52   ` Tian, Kevin
2022-07-07  3:01     ` Baolu Lu
2022-07-23 14:15   ` Jason Gunthorpe
2022-07-31 12:19   ` Yi Liu
2022-07-05  5:07 ` [PATCH v10 06/12] iommu/vt-d: Add " Lu Baolu
2022-07-23 14:16   ` Jason Gunthorpe
2022-07-31 12:20   ` Yi Liu
2022-07-05  5:07 ` [PATCH v10 07/12] arm-smmu-v3/sva: " Lu Baolu
2022-07-23 14:20   ` Jason Gunthorpe
2022-07-24 11:58     ` Baolu Lu
2022-07-05  5:07 ` [PATCH v10 08/12] iommu/sva: Refactoring iommu_sva_bind/unbind_device() Lu Baolu
2022-07-05 17:43   ` Jean-Philippe Brucker
2022-07-07  1:56   ` Tian, Kevin
2022-07-07  3:02     ` Baolu Lu
2022-07-23 14:26   ` Jason Gunthorpe
2022-07-24 13:48     ` Baolu Lu
2022-07-25  7:39       ` Jean-Philippe Brucker
2022-07-25  8:02         ` Tian, Kevin
2022-07-25  8:47           ` Jean-Philippe Brucker
2022-07-25  9:33         ` Baolu Lu
2022-07-25  9:52           ` Jean-Philippe Brucker
2022-07-25 14:46             ` Jason Gunthorpe
2022-07-25  7:50       ` Tian, Kevin
2022-07-25 10:22         ` Baolu Lu
2022-07-25 14:47           ` Jason Gunthorpe
2022-07-26  8:47             ` Baolu Lu
2022-07-31 12:36   ` Yi Liu
2022-07-31 13:45     ` Baolu Lu
2022-07-31 12:55   ` Yi Liu
2022-07-31 13:51     ` Baolu Lu
2022-07-05  5:07 ` [PATCH v10 09/12] iommu: Remove SVA related callbacks from iommu ops Lu Baolu
2022-07-23 14:27   ` Jason Gunthorpe
2022-07-31 12:38   ` Yi Liu
2022-07-05  5:07 ` [PATCH v10 10/12] iommu: Prepare IOMMU domain for IOPF Lu Baolu
2022-07-07  1:58   ` Tian, Kevin
2022-07-23 14:33   ` Jason Gunthorpe
2022-07-24 14:04     ` Baolu Lu
2022-07-25 14:49       ` Jason Gunthorpe
2022-07-31 12:50   ` Yi Liu
2022-07-31 13:47     ` Baolu Lu
2022-07-05  5:07 ` [PATCH v10 11/12] iommu: Per-domain I/O page fault handling Lu Baolu
2022-07-07  2:06   ` Tian, Kevin
2022-07-23 14:34   ` Jason Gunthorpe
2022-07-05  5:07 ` [PATCH v10 12/12] iommu: Rename iommu-sva-lib.{c,h} Lu Baolu
2022-07-23 14:34   ` Jason Gunthorpe

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