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From:   Anup Patel <anup@brainfault.org>
Date:   Fri, 5 Jun 2020 14:33:01 +0530
Message-ID: <CAAhSdy0qP6iNY9cDkyCZ65-DmketizjSQsuwk1wHyyQj5GKcAg@mail.gmail.com>
Subject: Re: [PATCH v2 1/1] riscv: Select ARCH_SUPPORTS_ATOMIC_RMW by default
To:     Chenxi Mao <maochenxi@eswin.com>
Cc:     Paul Walmsley <paul.walmsley@sifive.com>,
        linux-riscv <linux-riscv@lists.infradead.org>,
        Albert Ou <aou@eecs.berkeley.edu>,
        Palmer Dabbelt <palmer@dabbelt.com>,
        "linux-kernel@vger.kernel.org List" <linux-kernel@vger.kernel.org>
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On Fri, Jun 5, 2020 at 10:45 AM Chenxi Mao <maochenxi@eswin.com> wrote:
>
> Select ARCH_SUPPORTS_ATOMIC_RMW by default to enabel osqlocks.
>
> PS2: Add signed off info.
>
> Signed-off-by: Chenxi Mao <maochenxi@eswin.com>
> ---
>  arch/riscv/Kconfig | 1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
> index a31e1a41913a..cbdc605d20d9 100644
> --- a/arch/riscv/Kconfig
> +++ b/arch/riscv/Kconfig
> @@ -68,6 +68,7 @@ config RISCV
>         select ARCH_HAS_GCOV_PROFILE_ALL
>         select HAVE_COPY_THREAD_TLS
>         select HAVE_ARCH_KASAN if MMU && 64BIT
> +       select ARCH_SUPPORTS_ATOMIC_RMW
>
>  config ARCH_MMAP_RND_BITS_MIN
>         default 18 if 64BIT
> --
> 2.25.1
>
>

Looks good to me.

Reviewed-by: Anup Patel <anup@brainfault.org>

This is a good candidate for Linux-5.8. Palmer ??

Regards,
Anup