Message-ID: <c302c616-8c8d-0da1-c334-4d77cf2120bf@linaro.org>
Date:   Tue, 14 Feb 2023 08:50:33 +0100
MIME-Version: 1.0
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:102.0)
 Gecko/20100101 Thunderbird/102.7.2
Subject: Re: [PATCH v2 10/24] mips/cpu: Make sure play_dead() doesn't return
Content-Language: en-US
To:     Josh Poimboeuf <jpoimboe@kernel.org>, linux-kernel@vger.kernel.org
Cc:     jgross@suse.com, richard.henderson@linaro.org,
        ink@jurassic.park.msu.ru, mattst88@gmail.com,
        linux-alpha@vger.kernel.org, linux@armlinux.org.uk,
        linux-arm-kernel@lists.infradead.org, catalin.marinas@arm.com,
        will@kernel.org, guoren@kernel.org, linux-csky@vger.kernel.org,
        linux-ia64@vger.kernel.org, chenhuacai@kernel.org,
        kernel@xen0n.name, loongarch@lists.linux.dev, f.fainelli@gmail.com,
        bcm-kernel-feedback-list@broadcom.com, tsbogend@alpha.franken.de,
        linux-mips@vger.kernel.org, jiaxun.yang@flygoat.com,
        mpe@ellerman.id.au, npiggin@gmail.com, christophe.leroy@csgroup.eu,
        linuxppc-dev@lists.ozlabs.org, ysato@users.sourceforge.jp,
        dalias@libc.org, linux-sh@vger.kernel.org, davem@davemloft.net,
        sparclinux@vger.kernel.org, tglx@linutronix.de, mingo@redhat.com,
        bp@alien8.de, dave.hansen@linux.intel.com, x86@kernel.org,
        hpa@zytor.com, chris@zankel.net, jcmvbkbc@gmail.com,
        linux-xtensa@linux-xtensa.org, peterz@infradead.org,
        juri.lelli@redhat.com, vincent.guittot@linaro.org,
        dietmar.eggemann@arm.com, rostedt@goodmis.org, bsegall@google.com,
        mgorman@suse.de, bristot@redhat.com, vschneid@redhat.com,
        paulmck@kernel.org
References: <cover.1676358308.git.jpoimboe@kernel.org>
 <b195e4da190bb06b7d4af15d66ce6129e2347630.1676358308.git.jpoimboe@kernel.org>
From:   =?UTF-8?Q?Philippe_Mathieu-Daud=c3=a9?= <philmd@linaro.org>
In-Reply-To: <b195e4da190bb06b7d4af15d66ce6129e2347630.1676358308.git.jpoimboe@kernel.org>
Content-Type: text/plain; charset=UTF-8; format=flowed
Content-Transfer-Encoding: 8bit
Precedence: bulk

On 14/2/23 08:05, Josh Poimboeuf wrote:
> play_dead() doesn't return.  Make that more explicit with a BUG().
> 
> BUG() is preferable to unreachable() because BUG() is a more explicit
> failure mode and avoids undefined behavior like falling off the edge of
> the function into whatever code happens to be next.
> 
> Acked-by: Florian Fainelli <f.fainelli@gmail.com>
> Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org>
> ---
>   arch/mips/kernel/smp-bmips.c | 2 ++
>   arch/mips/loongson64/smp.c   | 1 +
>   2 files changed, 3 insertions(+)

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>