From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.4 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING,SPF_PASS,URIBL_BLOCKED, USER_AGENT_MUTT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5092BC5CFFE for ; Mon, 10 Dec 2018 20:30:48 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 12ABD2084C for ; Mon, 10 Dec 2018 20:30:48 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 12ABD2084C Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=libc.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729645AbeLJUap (ORCPT ); Mon, 10 Dec 2018 15:30:45 -0500 Received: from 216-12-86-13.cv.mvl.ntelos.net ([216.12.86.13]:58724 "EHLO brightrain.aerifal.cx" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729057AbeLJUaj (ORCPT ); Mon, 10 Dec 2018 15:30:39 -0500 Received: from dalias by brightrain.aerifal.cx with local (Exim 3.15 #2) id 1gWSCK-0000AH-00; Mon, 10 Dec 2018 20:30:36 +0000 Date: Mon, 10 Dec 2018 15:30:36 -0500 From: Rich Felker To: Firoz Khan Cc: linux-sh@vger.kernel.org, Yoshinori Sato , Greg Kroah-Hartman , Philippe Ombredanne , Thomas Gleixner , Kate Stewart , y2038 Mailman List , Linux Kernel Mailing List , Linux-Arch , Arnd Bergmann , Deepa Dinamani , Marcin Juszkiewicz Subject: Re: [PATCH v3 0/3] sh: system call table generation support Message-ID: <20181210203036.GM23599@brightrain.aerifal.cx> References: <1542169930-24118-1-git-send-email-firoz.khan@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Nov 19, 2018 at 10:38:20AM +0530, Firoz Khan wrote: > On Wed, 14 Nov 2018 at 10:02, Firoz Khan wrote: > > > > The purpose of this patch series is, we can easily > > add/modify/delete system call table support by cha- > > nging entry in syscall.tbl file instead of manually > > changing many files. The other goal is to unify the > > system call table generation support implementation > > across all the architectures. > > > > The system call tables are in different format in > > all architecture. It will be difficult to manually > > add, modify or delete the system calls in the resp- > > ective files manually. To make it easy by keeping a > > script and which'll generate uapi header file and > > syscall table file. > > > > syscall.tbl contains the list of available system > > calls along with system call number and correspond- > > ing entry point. Add a new system call in this arch- > > itecture will be possible by adding new entry in > > the syscall.tbl file. > > > > Adding a new table entry consisting of: > > - System call number. > > - ABI. > > - System call name. > > - Entry point name. > > > > Please note, this support is only available for 32-bit > > kernel, not 64-bit kernel. As I came across the 64-bit > > kernel is not active for long time. > > > > ARM, s390 and x86 architecuture does exist the sim- > > ilar support. I leverage their implementation to come > > up with a generic solution. > > > > I have done the same support for work for alpha, ia64, > > m68k, microblaze, mips, parisc, powerpc, sparc, and > > xtensa. Below mentioned git repository contains more > > details about the workflow. > > > > https://github.com/frzkhn/system_call_table_generator/ > > > > Finally, this is the ground work to solve the Y2038 > > issue. We need to add two dozen of system calls to solve > > Y2038 issue. So this patch series will help to add new > > system calls easily by adding new entry in the syscall- > > .tbl. > > > > Changes since v2: > > - changed from generic-y to generated-y in Kbuild. > > > > Changes since v1: > > - optimized/updated the syscall table generation > > scripts. > > - fixed all mixed indentation issues in syscall.tbl. > > - added "comments" in syscall.tbl. > > > > Firoz Khan (3): > > sh: add __NR_syscalls along with NR_syscalls > > sh: add system call table generation support > > sh: generate uapi header and syscall table header files > > Gentle reminder! > > Could someone review this patch series. I haven't received any > feedback till now. I'm way behind, but fine with it going upstream via whatever tree is appropriate. I think Arnd will take care of it. Acked-by: Rich Felker > FYI, this support is only available for 32-bit kernel, not 64-bit > kernel. As I came across the 64-bit kernel is not active for long time. Support for 64-bit, which AFAIK barely ever existed in hardware, was removed from GCC a long time ago. At some point it needs to be removed from the kernel too, and doing so should allow a lot of cleanup. Rich