From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <linux-kernel-owner@vger.kernel.org>
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
	id S1753603AbbIKQdO (ORCPT <rfc822;w@1wt.eu>);
	Fri, 11 Sep 2015 12:33:14 -0400
Received: from mail-ob0-f169.google.com ([209.85.214.169]:35481 "EHLO
	mail-ob0-f169.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org
	with ESMTP id S1753117AbbIKQdK (ORCPT
	<rfc822;linux-kernel@vger.kernel.org>);
	Fri, 11 Sep 2015 12:33:10 -0400
MIME-Version: 1.0
In-Reply-To: <2108882.tTxglVCXxY@wuerfel>
References: <cb5138299d37d5800e2d135b01a7667fa6115854.1436912629.git.luto@kernel.org>
 <49726621.LPTnfQXYGz@wuerfel> <CAMuHMdXX31xZ4AS6FbeXLXgDn5UV5=0C3hrihuwDOP_abuJsBg@mail.gmail.com>
 <2108882.tTxglVCXxY@wuerfel>
From: Andy Lutomirski <luto@amacapital.net>
Date: Fri, 11 Sep 2015 09:32:46 -0700
Message-ID: <CALCETrVbNs-bOfr8cC3CC2RrBtKctdw4d0o9Ds6RQfXEm466YQ@mail.gmail.com>
Subject: Re: [PATCH] x86: Wire up 32-bit direct socket calls
To: Arnd Bergmann <arnd@arndb.de>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>,
        Heiko Carstens <heiko.carstens@de.ibm.com>,
        "H. Peter Anvin" <hpa@zytor.com>, Andy Lutomirski <luto@kernel.org>,
        X86 ML <x86@kernel.org>, Network Development <netdev@vger.kernel.org>,
        Tulio Magno Quites Machado Filho 
	<tuliom@linux.vnet.ibm.com>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        Alexander Larsson <alexl@redhat.com>,
        Cosimo Cecchi <cosimo@endlessm.com>,
        Dan Nicholson <nicholson@endlessm.com>,
        libc-alpha <libc-alpha@sourceware.org>,
        Rajalakshmi Srinivasaraghavan <raji@linux.vnet.ibm.com>,
        Linux-Arch <linux-arch@vger.kernel.org>
Content-Type: text/plain; charset=UTF-8
Sender: linux-kernel-owner@vger.kernel.org
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org

On Fri, Sep 11, 2015 at 3:14 AM, Arnd Bergmann <arnd@arndb.de> wrote:
> On Friday 11 September 2015 11:54:50 Geert Uytterhoeven wrote:
>> To make sure I don't miss any (it seems I missed recvmmsg and sendmmsg for
>> the socketcall case, sigh), this is the list of ipc syscalls to implement?
>>
>>     sys_msgget
>>     sys_msgctl
>>     sys_msgrcv
>>     sys_msgsnd
>>     sys_semget
>>     sys_semctl
>>     sys_semtimedop
>>     sys_shmget
>>     sys_shmctl
>>     sys_shmat
>>     sys_shmdt
>>
>> sys_semop() seems to be unneeded because it can be implemented using
>> sys_semtimedop()?
>>
>
> Yes, that list looks right. IPC also includes a set of six sys_mq_*
> call, but I believe that everyone already has those as they are not
> covered by sys_ipc.
>
> For y2038 compatibility, we will likely add a new variant of
> semtimedop that takes a 64-bit timespec. While the argument passed
> there is a relative time that will never need to be longer than 68
> years, we need to accommodate user space that defines timespec
> in a sane way, and converting the argument in libc would be awkward.
>

I missed sys_ipc entirely.

Ingo, Thomas, want to just wire those up, too?  I can send a patch
next week, but it'll be as trivial as the socket one.

--Andy