linux-kernel - Re: [PATCH v2 0/5] alpha: system call table generation support

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Message-ID: <CALxhOnjYVVC7-_h8975OLKZg4x8ApgfG4EaxmGy3HLFiLCcdGw@mail.gmail.com>
Date:   Tue, 6 Nov 2018 09:42:21 +0530
From:   Firoz Khan <firoz.khan@...aro.org>
To:     Matt Turner <mattst88@...il.com>
Cc:     linux-alpha@...r.kernel.org, Richard Henderson <rth@...ddle.net>,
        Ivan Kokshaysky <ink@...assic.park.msu.ru>,
        Thomas Gleixner <tglx@...utronix.de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Philippe Ombredanne <pombredanne@...b.com>,
        Kate Stewart <kstewart@...uxfoundation.org>,
        y2038 Mailman List <y2038@...ts.linaro.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux-Arch <linux-arch@...r.kernel.org>,
        Arnd Bergmann <arnd@...db.de>,
        Deepa Dinamani <deepa.kernel@...il.com>,
        Marcin Juszkiewicz <marcin.juszkiewicz@...aro.org>
Subject: Re: [PATCH v2 0/5] alpha: system call table generation support

Hi Matt,

On Tue, 6 Nov 2018 at 03:01, Matt Turner <mattst88@...il.com> wrote:
>
> On Thu, Nov 1, 2018 at 6:44 AM Firoz Khan <firoz.khan@...aro.org> 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.
>
> Sounds like a worthy goal.

Thanks! This is Arnd's idea to come up with a common script
for all the architecture. This implementation is a groundwork to
solve Y2038 issue.

>
> I tried applying the patches and it seems they haven't been rebased
> since v4.18. My rebases are in
> https://git.kernel.org/pub/scm/linux/kernel/git/mattst88/alpha.git/log/?h=for-linus

I was rebased with 4.19-rc8 before sending v2 (what I remember).

>
> They seem to work for me, FWIW.
>
> Is your plan to have the patches go through the separate architecture
> trees, or go in together? I think I'd at least prefer for another
> architecture to take the plunge before alpha.

I would like Arnd's to comment on this as it is my first patch series. As I
mentioned in the cover letter this implementation done for 8 architecture-
alpha, ia64, m68k, microblaze, parisc, sh, sparc, and xtensa. Most of the
review are also done. mips and powerpc are *almost* completed. FYI,
The system call table generation script for IA64 merged in linux-next.

Firoz