linux-kernel - Re: [RFC PATCH v1 01/10] RISC-V: Clear SIP bit only when using SBI IPI operations

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Message-ID: <CAEUhbmXhDZExHpZwVUEW-xz2nq_j5SXev4pZBhG4qAtPr2riCA@mail.gmail.com>
Date:   Mon, 14 Jun 2021 21:33:53 +0800
From:   Bin Meng <bmeng.cn@...il.com>
To:     Anup Patel <anup.patel@....com>
Cc:     Palmer Dabbelt <palmer@...belt.com>,
        Palmer Dabbelt <palmerdabbelt@...gle.com>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Marc Zyngier <maz@...nel.org>,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Atish Patra <atish.patra@....com>,
        Alistair Francis <Alistair.Francis@....com>,
        Anup Patel <anup@...infault.org>,
        linux-riscv <linux-riscv@...ts.infradead.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        devicetree <devicetree@...r.kernel.org>
Subject: Re: [RFC PATCH v1 01/10] RISC-V: Clear SIP bit only when using SBI
 IPI operations

On Sun, Jun 13, 2021 at 12:07 AM Anup Patel <anup.patel@....com> wrote:
>
> The software interrupt pending (i.e. [M|S]SIP) bit is writeable for
> S-mode but readonly for M-mode so we clear this bit only when using

nits: read-only

> SBI IPI operations.
>
> Signed-off-by: Anup Patel <anup.patel@....com>
> ---
>  arch/riscv/kernel/sbi.c | 8 +++++++-
>  arch/riscv/kernel/smp.c | 2 --
>  2 files changed, 7 insertions(+), 3 deletions(-)
>

Otherwise,
Reviewed-by: Bin Meng <bmeng.cn@...il.com>