linux-kernel - Re: [PATCH 00/18] treewide: fix object files shared between several modules

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Date:   Fri, 10 Feb 2023 18:31:30 +0100
From:   Alexander Lobakin <alobakin@...lbox.org>
To:     linux-kbuild@...r.kernel.org
Cc:     Alexander Lobakin <alobakin@...lbox.org>,
        Masahiro Yamada <masahiroy@...nel.org>,
        Nicolas Schier <nicolas@...sle.eu>,
        Jens Axboe <axboe@...nel.dk>,
        Boris Brezillon <bbrezillon@...nel.org>,
        Borislav Petkov <bp@...en8.de>,
        Tony Luck <tony.luck@...el.com>,
        Miquel Raynal <miquel.raynal@...tlin.com>,
        Vladimir Oltean <vladimir.oltean@....com>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        Derek Chickles <dchickles@...vell.com>,
        Ioana Ciornei <ioana.ciornei@....com>,
        Salil Mehta <salil.mehta@...wei.com>,
        Sunil Goutham <sgoutham@...vell.com>,
        Grygorii Strashko <grygorii.strashko@...com>,
        Daniel Scally <djrscally@...il.com>,
        Hans de Goede <hdegoede@...hat.com>,
        Mark Brown <broonie@...nel.org>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        NXP Linux Team <linux-imx@....com>, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 00/18] treewide: fix object files shared between several modules

From: Alexander Lobakin <alobakin@...me>
Date: Sat, 19 Nov 2022 23:03:57 +0000

> This is a follow-up to the series[0] that adds Kbuild warning if an
> object is linked into several modules (including vmlinux) in order
> to prevent hidden side effects from appearing.
> The original series, as well as this one, was inspired by the recent
> issue[1] with the ZSTD modules on a platform which has such sets of
> vmlinux cflags and module cflags so that objects built with those
> two even refuse to link with each other.
> The final goal is to forbid linking one object several times
> entirely.

Oh well,

Sorry for quite abandoning the series. A bit busy RN to work on the kernel
outside work. If someone wants to pick patches related to his driver and
send them separately, just how the Ocelot folks did, feel free to.
I'll get back to this one in approx 2-4 weeks.

>
> Patches 1-7 and 10-11 was runtime-tested by me. Pathes 8-9 and 12-18
> are compile-time tested only (compile, link, modpost), so I
> encourage the maintainers to review them carefully. At least the
> last one, for cpsw, most likely has issues :D
> Masahiro's patches are taken from his WIP tree[2], with the two last
> finished by me.

[...]

> --
> 2.38.1

Thanks,
Olek