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From:   Thomas Gleixner <tglx@linutronix.de>
To:     Alexandre Chartre <alexandre.chartre@oracle.com>,
        LKML <linux-kernel@vger.kernel.org>
Cc:     x86@kernel.org, Steven Rostedt <rostedt@goodmis.org>,
        Brian Gerst <brgerst@gmail.com>,
        Juergen Gross <jgross@suse.com>,
        Paolo Bonzini <pbonzini@redhat.com>,
        Arnd Bergmann <arnd@arndb.de>
Subject: Re: [patch 08/24] x86/entry: Convert Divide Error to IDTENTRY
In-Reply-To: <4afd832a-2a78-798a-97e0-d1e3636cc290@oracle.com>
References: <20200225221606.511535280@linutronix.de> <20200225222648.970676604@linutronix.de> <4afd832a-2a78-798a-97e0-d1e3636cc290@oracle.com>
Date:   Wed, 04 Mar 2020 14:09:56 +0100
Message-ID: <87lfogl10b.fsf@nanos.tec.linutronix.de>
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Sender: linux-kernel-owner@vger.kernel.org
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Alexandre Chartre <alexandre.chartre@oracle.com> writes:
> On 2/25/20 11:16 PM, Thomas Gleixner wrote:
>> +/* Simple exception entries: */
>> +DECLARE_IDTENTRY(X86_TRAP_DE,		exc_divide_error);
>> +
>
> I think this macro has a tricky behavior because it will declare C functions
> when included in a C file, and define assembly idtentry when included in an
> assembly file.
>
> I see your point which is to have a single statement which provides both C
> and assembly functions, but this dual behavior is not obvious when reading
> the code. Maybe add a comment to explain this behavior?

Done.