linux-kernel - Re: [PATCH v3 2/8] x86, syscalls: Refactor SYSCALL

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Message-ID: <CALCETrXYxKk+30Py0hUHuMiXCXLzYW6Oh8tDo-bBp9G2OWxqyw@mail.gmail.com>
Date:   Fri, 28 Feb 2020 10:35:28 -0800
From:   Andy Lutomirski <luto@...nel.org>
To:     Brian Gerst <brgerst@...il.com>
Cc:     LKML <linux-kernel@...r.kernel.org>, X86 ML <x86@...nel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...nel.org>, Borislav Petkov <bp@...en8.de>,
        "H . Peter Anvin" <hpa@...or.com>,
        Andy Lutomirski <luto@...nel.org>,
        Dominik Brodowski <linux@...inikbrodowski.net>
Subject: Re: [PATCH v3 2/8] x86, syscalls: Refactor SYSCALL_DEFINE0 macros

On Thu, Feb 27, 2020 at 5:28 AM Brian Gerst <brgerst@...il.com> wrote:
>
> Pull the common code out from the SYSCALL_DEFINE0 macros into a new
> __SYS_STUB0 macro.  Also conditionalize the X64 version in preparation for
> enabling syscall wrappers on 32-bit native kernels.

Reviewed-by: Andy Lutomirski <luto@...nel.org>

It would be really nice if there was a clean way to get rid of the
0-arg special case, but I don't immediately see one.

--Andy