Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
MIME-Version: 1.0
References: <20220916103817.9490-1-guoren@kernel.org> <20220916103817.9490-2-guoren@kernel.org>
 <CABgGipWdm+-pOrj-ROR8fsVO7JEr4m64z7+zNW1_NszW74e5SA@mail.gmail.com>
In-Reply-To: <CABgGipWdm+-pOrj-ROR8fsVO7JEr4m64z7+zNW1_NszW74e5SA@mail.gmail.com>
From:   Guo Ren <guoren@kernel.org>
Date:   Sat, 17 Sep 2022 18:46:24 +0800
Message-ID: <CAJF2gTT-TOdoGuFdbR8Xwmfur-LNOCUq_sThr9ZpJeMKxudH1A@mail.gmail.com>
Subject: Re: [PATCH 1/3] riscv: ftrace: Fixup panic by disabling preemption
To:     Andy Chiu <andy.chiu@sifive.com>
Cc:     arnd@arndb.de, palmer@rivosinc.com, rostedt@goodmis.org,
        greentime.hu@sifive.com, zong.li@sifive.com, jrtc27@jrtc27.com,
        mingo@redhat.com, linux-arch@vger.kernel.org,
        linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org
Content-Type: text/plain; charset="UTF-8"
Precedence: bulk

Thanks! I would add your Signed-off-by: Andy Chiu
<andy.chiu@sifive.com> as the first author, next.

On Sat, Sep 17, 2022 at 9:32 AM Andy Chiu <andy.chiu@sifive.com> wrote:
>
> Yes, by disabling preemption and ensuring all sub-functions called by
> the busy waiting loop of stop_machine, which happens to be true on
> non-preemptive kernels, solve the problem from the original
> implementation.
>
> Andy Chiu <andy.chiu@sifive.com>


-- 
Best Regards
 Guo Ren