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

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Message-ID: <20240708163407.GC14050@ziepe.ca>
Date: Mon, 8 Jul 2024 13:34:07 -0300
From: Jason Gunthorpe <jgg@...pe.ca>
To: Will Deacon <will@...nel.org>
Cc: Joerg Roedel <joro@...tes.org>, Robin Murphy <robin.murphy@....com>,
	Kevin Tian <kevin.tian@...el.com>,
	Lu Baolu <baolu.lu@...ux.intel.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 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.

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

Jason