Linux Virtualization: Re: [PATCH v2 4/7] iommu: Remove iommu_ops pgsize

Re: [PATCH v2 4/7] iommu: Remove iommu_ops pgsize_bitmap from simple drivers

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To: Jason Gunthorpe <jgg@xxxxxxxxxx>, Alexandre Ghiti <alex@xxxxxxxx>, Alim Akhtar <alim.akhtar@xxxxxxxxxxx>, Alyssa Rosenzweig <alyssa@xxxxxxxxxxxxx>, Albert Ou <aou@xxxxxxxxxxxxxxxxx>, asahi@xxxxxxxxxxxxxxx, Baolin Wang <baolin.wang@xxxxxxxxxxxxxxxxx>, David Woodhouse <dwmw2@xxxxxxxxxxxxx>, Gerald Schaefer <gerald.schaefer@xxxxxxxxxxxxx>, Heiko Stuebner <heiko@xxxxxxxxx>, iommu@xxxxxxxxxxxxxxx, Janne Grunau <j@xxxxxxxxxx>, Jean-Philippe Brucker <jean-philippe@xxxxxxxxxx>, Jernej Skrabec <jernej.skrabec@xxxxxxxxx>, Jonathan Hunter <jonathanh@xxxxxxxxxx>, Joerg Roedel <joro@xxxxxxxxxx>, Krzysztof Kozlowski <krzk@xxxxxxxxxx>, linux-arm-kernel@xxxxxxxxxxxxxxxxxxx, linux-arm-msm@xxxxxxxxxxxxxxx, linux-mediatek@xxxxxxxxxxxxxxxxxxx, linux-riscv@xxxxxxxxxxxxxxxxxxx, linux-rockchip@xxxxxxxxxxxxxxxxxxx, linux-s390@xxxxxxxxxxxxxxx, linux-samsung-soc@xxxxxxxxxxxxxxx, linux-sunxi@xxxxxxxxxxxxxxx, linux-tegra@xxxxxxxxxxxxxxx, Marek Szyprowski <m.szyprowski@xxxxxxxxxxx>, Matthias Brugger <matthias.bgg@xxxxxxxxx>, Matthew Rosato <mjrosato@xxxxxxxxxxxxx>, Neal Gompa <neal@xxxxxxxxx>, Orson Zhai <orsonzhai@xxxxxxxxx>, Palmer Dabbelt <palmer@xxxxxxxxxxx>, Paul Walmsley <paul.walmsley@xxxxxxxxxx>, Rob Clark <robin.clark@xxxxxxxxxxxxxxxx>, Robin Murphy <robin.murphy@xxxxxxx>, Samuel Holland <samuel@xxxxxxxxxxxx>, Sven Peter <sven@xxxxxxxxxx>, Thierry Reding <thierry.reding@xxxxxxxxx>, Krishna Reddy <vdumpa@xxxxxxxxxx>, virtualization@xxxxxxxxxxxxxxx, Chen-Yu Tsai <wens@xxxxxxxx>, Will Deacon <will@xxxxxxxxxx>, Yong Wu <yong.wu@xxxxxxxxxxxx>, Chunyan Zhang <zhang.lyra@xxxxxxxxx>

Subject: Re: [PATCH v2 4/7] iommu: Remove iommu_ops pgsize_bitmap from simple drivers

From: AngeloGioacchino Del Regno <angelogioacchino.delregno@xxxxxxxxxxxxx>

Date: Wed, 11 Jun 2025 11:40:12 +0200

Cc: Lu Baolu <baolu.lu@xxxxxxxxxxxxxxx>, Kevin Tian <kevin.tian@xxxxxxxxx>, patches@xxxxxxxxxxxxxxx, Niklas Schnelle <schnelle@xxxxxxxxxxxxx>, Sven Peter <sven@xxxxxxxxxxxxx>, Tomasz Jeznach <tjeznach@xxxxxxxxxxxx>

In-reply-to: <4-v2-68a2e1ba507c+1fb-iommu_rm_ops_pgsize_jgg@nvidia.com>

References: <4-v2-68a2e1ba507c+1fb-iommu_rm_ops_pgsize_jgg@nvidia.com>

User-agent: Mozilla Thunderbird

Il 09/06/25 22:41, Jason Gunthorpe ha scritto:

These drivers just have a constant value for their page size, move it
into their domain_alloc_paging function before setting up the geometry.

Reviewed-by: Kevin Tian <kevin.tian@xxxxxxxxx>
Acked-by: Niklas Schnelle <schnelle@xxxxxxxxxxxxx> # for s390-iommu.c
Signed-off-by: Jason Gunthorpe <jgg@xxxxxxxxxx>


For MediaTek:

Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@xxxxxxxxxxxxx>