linux-kernel - Re: [PATCH v10 0/7] Linux RISC-V IOMMU Support

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Message-ID: <0a0b8b94-ad94-46ea-ac0d-cbf35dec0f50@iscas.ac.cn>
Date: Wed, 5 Nov 2025 18:08:53 +0800
From: Vivian Wang <wangruikang@...as.ac.cn>
To: Tomasz Jeznach <tjeznach@...osinc.com>
Cc: Anup Patel <apatel@...tanamicro.com>, devicetree@...r.kernel.org,
 Conor Dooley <conor+dt@...nel.org>, Albert Ou <aou@...s.berkeley.edu>,
 linux@...osinc.com, linux-kernel@...r.kernel.org,
 Rob Herring <robh+dt@...nel.org>, Sebastien Boeuf <seb@...osinc.com>,
 iommu@...ts.linux.dev, Palmer Dabbelt <palmer@...belt.com>,
 Nick Kossifidis <mick@....forth.gr>, Krzysztof Kozlowski
 <krzk+dt@...nel.org>, linux-riscv@...ts.infradead.org,
 Joerg Roedel <joro@...tes.org>, Will Deacon <will@...nel.org>,
 Robin Murphy <robin.murphy@....com>, Paul Walmsley <paul.walmsley@...ive.com>
Subject: Re: [PATCH v10 0/7] Linux RISC-V IOMMU Support

Hi Tomasz,

On 10/16/24 14:52, Tomasz Jeznach wrote:
> This patch series introduces support for RISC-V IOMMU architected
> hardware into the Linux kernel.
>
> [...]
>
> Follow-up patch series providing MSI interrupt remapping, complete ATS/PRI/SVA
> and VFIO/IOMMUFD support are available at the GitHub [2], and has been tested
> with published QEMU RISC-V IOMMU device model [3].

I'm currently looking into building drivers for some "accelerator" style
devices, and I'm trying to figure out the current situation of drivers
for the more advanced IOMMU features, specifically the ATS/PRI/SVA combo.

I see that the GitHub branch has been rebased in May to 6.15, but
seemingly hasn't been touched since. Is this still the latest version of
these patches? Aside from other IOMMU subsystem-wide changes since
v6.15, is there any other code/information that I should take into account?

This isn't super urgent or anything, but I'm pretty new to this, and
given that a year has passed since this series has been merged, I'm not
sure if there's some other development I've missed.

Thanks for your help.

Vivian "dramforever" Wang