From: Nicolin Chen <nicolinc@nvidia.com>
To: Yi Liu <yi.l.liu@intel.com>
Cc: <joro@8bytes.org>, <jgg@nvidia.com>, <kevin.tian@intel.com>,
<baolu.lu@linux.intel.com>, <will@kernel.org>,
<alex.williamson@redhat.com>, <eric.auger@redhat.com>,
<kvm@vger.kernel.org>, <chao.p.peng@linux.intel.com>,
<iommu@lists.linux.dev>, <zhenzhong.duan@intel.com>,
<vasant.hegde@amd.com>
Subject: Re: [PATCH v3 1/9] iommu: Pass old domain to set_dev_pasid op
Date: Mon, 21 Oct 2024 22:12:54 -0700 [thread overview]
Message-ID: <Zxc0VkaT5ADTgIzm@nvidia.com> (raw)
In-Reply-To: <20241018055402.23277-2-yi.l.liu@intel.com>
On Thu, Oct 17, 2024 at 10:53:54PM -0700, Yi Liu wrote:
> To support domain replacement for pasid, the underlying iommu driver needs
> to know the old domain hence be able to clean up the existing attachment.
> It would be much convenient for iommu layer to pass down the old domain.
> Otherwise, iommu drivers would need to track domain for pasids by themselves,
> this would duplicate code among the iommu drivers. Or iommu drivers would
> rely group->pasid_array to get domain, which may not always the correct
> one.
>
> Suggested-by: Jason Gunthorpe <jgg@nvidia.com>
> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
> Reviewed-by: Kevin Tian <kevin.tian@intel.com>
> Signed-off-by: Yi Liu <yi.l.liu@intel.com>
Reviewed-by: Nicolin Chen <nicolinc@nvidia.com>
next prev parent reply other threads:[~2024-10-22 5:13 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-10-18 5:53 [PATCH v3 0/9] Make set_dev_pasid op supporting domain replacement Yi Liu
2024-10-18 5:53 ` [PATCH v3 1/9] iommu: Pass old domain to set_dev_pasid op Yi Liu
2024-10-21 5:55 ` Baolu Lu
2024-10-22 5:12 ` Nicolin Chen [this message]
2024-10-18 5:53 ` [PATCH v3 2/9] iommu/vt-d: Move intel_drain_pasid_prq() into intel_pasid_tear_down_entry() Yi Liu
2024-10-21 5:58 ` Baolu Lu
2024-10-18 5:53 ` [PATCH v3 3/9] iommu/vt-d: Let intel_pasid_tear_down_entry() return pasid entry Yi Liu
2024-10-21 6:13 ` Baolu Lu
2024-10-21 6:35 ` Yi Liu
2024-10-21 6:59 ` Baolu Lu
2024-10-21 7:24 ` Yi Liu
2024-10-22 9:23 ` Baolu Lu
2024-10-22 9:38 ` Yi Liu
2024-10-22 11:23 ` Baolu Lu
2024-10-22 13:25 ` Yi Liu
2024-10-23 1:10 ` Baolu Lu
2024-10-18 5:53 ` [PATCH v3 4/9] iommu/vt-d: Make pasid setup helpers support modifying present " Yi Liu
2024-10-18 5:53 ` [PATCH v3 5/9] iommu/vt-d: Rename prepare_domain_attach_device() Yi Liu
2024-10-21 6:18 ` Baolu Lu
2024-10-21 6:36 ` Yi Liu
2024-10-18 5:53 ` [PATCH v3 6/9] iommu/vt-d: Make intel_iommu_set_dev_pasid() to handle domain replacement Yi Liu
2024-10-18 5:54 ` [PATCH v3 7/9] iommu/vt-d: Add set_dev_pasid callback for nested domain Yi Liu
2024-10-18 5:54 ` [PATCH v3 8/9] iommu/arm-smmu-v3: Make set_dev_pasid() op support replace Yi Liu
2024-10-22 5:25 ` Nicolin Chen
2024-10-22 6:07 ` Yi Liu
2024-10-18 5:54 ` [PATCH v3 9/9] iommu: Make set_dev_pasid op support domain replacement Yi Liu
2024-10-21 6:27 ` Baolu Lu
2024-10-21 6:40 ` Yi Liu
2024-10-21 10:50 ` Vasant Hegde
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