From: Jason Gunthorpe <jgg@nvidia.com>
To: Jean-Philippe Brucker <jean-philippe@linaro.org>
Cc: "Tian, Kevin" <kevin.tian@intel.com>,
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>,
"iommu@lists.linux-foundation.org"
<iommu@lists.linux-foundation.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH v6 03/12] iommu: Add attach/detach_dev_pasid domain ops
Date: Thu, 12 May 2022 08:51:01 -0300 [thread overview]
Message-ID: <20220512115101.GU49344@nvidia.com> (raw)
In-Reply-To: <Ynywqxo4P+aEeS6c@myrica>
On Thu, May 12, 2022 at 08:00:59AM +0100, Jean-Philippe Brucker wrote:
> > It is not "missing" it is just renamed to blocking_domain->ops->set_dev_pasid()
> >
> > The implementation of that function would be identical to
> > detach_dev_pasid.
>
> attach(dev, pasid, sva_domain)
> detach(dev, pasid, sva_domain)
>
> versus
>
> set_dev_pasid(dev, pasid, sva_domain)
> set_dev_pasid(dev, pasid, blocking)
>
> we loose the information of the domain previously attached, and the SMMU
> driver has to retrieve it to find the ASID corresponding to the mm.
It would be easy to have the old domain be an input as well - the core
code knows it.
Jason
next prev parent reply other threads:[~2022-05-12 11:51 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-05-10 6:17 [PATCH v6 00/12] iommu: SVA and IOPF refactoring Lu Baolu
2022-05-10 6:17 ` [PATCH v6 01/12] dmaengine: idxd: Separate user and kernel pasid enabling Lu Baolu
2022-05-10 6:17 ` [PATCH v6 02/12] iommu: Add pasid_bits field in struct dev_iommu Lu Baolu
2022-05-10 14:34 ` Jason Gunthorpe
2022-05-11 2:25 ` Baolu Lu
2022-05-11 8:00 ` Jean-Philippe Brucker
2022-05-11 11:59 ` Jason Gunthorpe
2022-05-10 6:17 ` [PATCH v6 03/12] iommu: Add attach/detach_dev_pasid domain ops Lu Baolu
2022-05-10 14:02 ` Jason Gunthorpe
2022-05-11 2:32 ` Baolu Lu
2022-05-11 4:09 ` Tian, Kevin
2022-05-11 7:54 ` Jean-Philippe Brucker
2022-05-11 12:02 ` Jason Gunthorpe
2022-05-12 7:00 ` Jean-Philippe Brucker
2022-05-12 11:51 ` Jason Gunthorpe [this message]
2022-05-16 2:03 ` Baolu Lu
2022-05-10 6:17 ` [PATCH v6 04/12] iommu/sva: Basic data structures for SVA Lu Baolu
2022-05-10 6:17 ` [PATCH v6 05/12] iommu/vt-d: Remove SVM_FLAG_SUPERVISOR_MODE support Lu Baolu
2022-05-10 14:35 ` Jason Gunthorpe
2022-05-10 6:17 ` [PATCH v6 06/12] iommu/vt-d: Add SVA domain support Lu Baolu
2022-05-10 6:17 ` [PATCH v6 07/12] arm-smmu-v3/sva: " Lu Baolu
2022-05-10 6:17 ` [PATCH v6 08/12] iommu/sva: Use attach/detach_pasid_dev in SVA interfaces Lu Baolu
2022-05-10 15:23 ` Jason Gunthorpe
2022-05-11 7:21 ` Baolu Lu
2022-05-11 14:53 ` Jason Gunthorpe
2022-05-12 3:02 ` Baolu Lu
2022-05-12 5:01 ` Tian, Kevin
2022-05-12 5:17 ` Baolu Lu
2022-05-12 5:44 ` Tian, Kevin
2022-05-12 6:16 ` Baolu Lu
2022-05-12 11:48 ` Jason Gunthorpe
2022-05-12 11:59 ` Baolu Lu
2022-05-12 12:03 ` Jason Gunthorpe
2022-05-12 12:47 ` Baolu Lu
2022-05-12 11:51 ` Jason Gunthorpe
2022-05-12 12:39 ` Baolu Lu
2022-05-10 6:17 ` [PATCH v6 09/12] iommu: Remove SVA related callbacks from iommu ops Lu Baolu
2022-05-10 6:17 ` [PATCH v6 10/12] iommu: Prepare IOMMU domain for IOPF Lu Baolu
2022-05-10 6:17 ` [PATCH v6 11/12] iommu: Per-domain I/O page fault handling Lu Baolu
2022-05-10 6:17 ` [PATCH v6 12/12] iommu: Rename iommu-sva-lib.{c,h} Lu Baolu
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