linux-kernel - Re: [PATCH v3 00/21] iommu: Refactoring domain allocation interface

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Message-ID: <56911ed6-d819-4882-9c7e-bfe4ba5826c2@linux.intel.com>
Date: Tue, 9 Jul 2024 10:10:44 +0800
From: Baolu Lu <baolu.lu@...ux.intel.com>
To: Jason Gunthorpe <jgg@...pe.ca>, Will Deacon <will@...nel.org>
Cc: baolu.lu@...ux.intel.com, Joerg Roedel <joro@...tes.org>,
 Robin Murphy <robin.murphy@....com>, Kevin Tian <kevin.tian@...el.com>,
 catalin.marinas@....com, kernel-team@...roid.com, Yi Liu
 <yi.l.liu@...el.com>, David Airlie <airlied@...il.com>,
 Daniel Vetter <daniel@...ll.ch>, Kalle Valo <kvalo@...nel.org>,
 Bjorn Andersson <andersson@...nel.org>,
 Mathieu Poirier <mathieu.poirier@...aro.org>,
 Alex Williamson <alex.williamson@...hat.com>, mst@...hat.com,
 Jason Wang <jasowang@...hat.com>, Thierry Reding <thierry.reding@...il.com>,
 Jonathan Hunter <jonathanh@...dia.com>,
 Mikko Perttunen <mperttunen@...dia.com>,
 Jeff Johnson <quic_jjohnson@...cinc.com>, ath10k@...ts.infradead.org,
 ath11k@...ts.infradead.org, iommu@...ts.linux.dev,
 dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 00/21] iommu: Refactoring domain allocation interface

On 7/9/24 12:34 AM, Jason Gunthorpe wrote:
> On Thu, Jul 04, 2024 at 03:18:56PM +0100, Will Deacon wrote:
>> On Mon, 10 Jun 2024 16:55:34 +0800, Lu Baolu wrote:
>>> The IOMMU subsystem has undergone some changes, including the removal
>>> of iommu_ops from the bus structure. Consequently, the existing domain
>>> allocation interface, which relies on a bus type argument, is no longer
>>> relevant:
>>>
>>>      struct iommu_domain *iommu_domain_alloc(struct bus_type *bus)
>>>
>>> [...]
>> Applied a few of these to iommu (iommufd/paging-domain-alloc), thanks!
>>
>> [01/21] iommu: Add iommu_paging_domain_alloc() interface
>>          https://git.kernel.org/iommu/c/a27bf2743cb8
>> [02/21] iommufd: Use iommu_paging_domain_alloc()
>>          https://git.kernel.org/iommu/c/26a581606fab
>> [03/21] vfio/type1: Use iommu_paging_domain_alloc()
>>          https://git.kernel.org/iommu/c/60ffc4501722
>> [04/21] vhost-vdpa: Use iommu_paging_domain_alloc()
>>          https://git.kernel.org/iommu/c/9c159f6de1ae
>> [05/21] drm/msm: Use iommu_paging_domain_alloc()
>>          https://git.kernel.org/iommu/c/45acf35af200
>>
>> [10/21] wifi: ath10k: Use iommu_paging_domain_alloc()
>>          https://git.kernel.org/iommu/c/d5b7485588df
>> [11/21] wifi: ath11k: Use iommu_paging_domain_alloc()
>>          https://git.kernel.org/iommu/c/ef50d41fbf1c
>>
>> [14/21] RDMA/usnic: Use iommu_paging_domain_alloc()
>>          https://git.kernel.org/iommu/c/3b10f25704be
>> [15/21] iommu/vt-d: Add helper to allocate paging domain
>>          https://git.kernel.org/iommu/c/9e9ba576c259
> Great, Lu can you please split the remaining by subsystem and try to
> get them to go through subsystem trees? Joerg can take the leftovers
> at rc6/7 or something like that so we can finish this.

Yes, sure. I guess I need to wait until 6.11-rc1 is out. It's a bit late
in the cycle for the subsystem trees to accept brand new changes.

> I think this is enough that Intel and AMD could now assert that dev is
> non-null?

Yes.

Thanks,
baolu