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Date:   Wed, 25 Oct 2023 21:56:47 +0200
From:   Thomas Gleixner <>
To:     Anup Patel <>,
        Palmer Dabbelt <>,
        Paul Walmsley <>,
        Rob Herring <>,
        Krzysztof Kozlowski <>,
        Frank Rowand <>,
        Conor Dooley <>
Cc:     Marc Zyngier <>,
        Björn Töpel <>,
        Atish Patra <>,
        Andrew Jones <>,
        Sunil V L <>,
        Saravana Kannan <>,
        Anup Patel <>,,,, Anup Patel <>
Subject: Re: [PATCH v11 08/14] irqchip/riscv-imsic: Add support for platform
 MSI irqdomain

On Mon, Oct 23 2023 at 22:57, Anup Patel wrote:
> The Linux platform MSI support requires a platform MSI irqdomain so
> let us add a platform irqchip driver for RISC-V IMSIC which provides
> a base IRQ domain and platform MSI domain. This driver assumes that
> the IMSIC state is already initialized by the IMSIC early driver.

Please no. The platform MSI cruft is really a horrible concept and there
is ongoing work (sadly mightily delayed) to convert the main (ab)user
ARM over to per device MSI domains.

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