linux-kernel - Re: [PATCH 0/4] iommu: Remove iommu

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Message-ID: <20240423140803.GA931103@myrica>
Date: Tue, 23 Apr 2024 15:08:03 +0100
From: Jean-Philippe Brucker <jean-philippe@...aro.org>
To: Robin Murphy <robin.murphy@....com>
Cc: Will Deacon <will@...nel.org>, Joerg Roedel <joro@...tes.org>,
	linux-acpi@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org, iommu@...ts.linux.dev,
	devicetree@...r.kernel.org, Rob Herring <robh@...nel.org>,
	Saravana Kannan <saravanak@...gle.com>,
	Lorenzo Pieralisi <lpieralisi@...nel.org>,
	Hanjun Guo <guohanjun@...wei.com>,
	Sudeep Holla <sudeep.holla@....com>,
	"Rafael J. Wysocki" <rafael@...nel.org>,
	Len Brown <lenb@...nel.org>
Subject: Re: [PATCH 0/4] iommu: Remove iommu_fwspec ops

On Fri, Apr 19, 2024 at 05:55:58PM +0100, Robin Murphy wrote:
> Hi All,
> 
> Building on top of the arch_setup_dma_ops() cleanup[1], the next step
> down the chain is {acpi,of}_dma_configure()... There's plenty to do
> here, but it may as well start with this fairly self-contained little
> cleanup, pruning yet more redundancy and exposed API surface.

Tested with QEMU: SMMUv3 DT/IORT, virtio-iommu builtin/module DT/VIOT arm64/x86

Tested-by: Jean-Philippe Brucker <jean-philippe@...aro.org>

> 
> Thanks,
> Robin.
> 
> [1] https://lore.kernel.org/linux-iommu/cover.1713523152.git.robin.murphy@arm.com
> 
> 
> Robin Murphy (4):
>   iommu: Resolve fwspec ops automatically
>   ACPI: Retire acpi_iommu_fwspec_ops()
>   OF: Simplify of_iommu_configure()
>   iommu: Remove iommu_fwspec ops
> 
>  drivers/acpi/arm64/iort.c             | 19 +++-------
>  drivers/acpi/scan.c                   | 38 +++++---------------
>  drivers/acpi/viot.c                   | 11 ++----
>  drivers/iommu/arm/arm-smmu/arm-smmu.c |  3 +-
>  drivers/iommu/iommu-priv.h            |  7 ++++
>  drivers/iommu/iommu.c                 | 20 +++++------
>  drivers/iommu/mtk_iommu_v1.c          |  2 +-
>  drivers/iommu/of_iommu.c              | 50 ++++++++++-----------------
>  drivers/iommu/tegra-smmu.c            |  2 +-
>  drivers/of/device.c                   | 30 ++++++----------
>  include/acpi/acpi_bus.h               |  3 +-
>  include/linux/iommu.h                 | 15 ++------
>  12 files changed, 66 insertions(+), 134 deletions(-)
> 
> -- 
> 2.39.2.101.g768bb238c484.dirty
>