linux-kernel - Re: [PATCH] Revert "Makefile: install modules.builtin even if CONFIG

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Message-ID: <20200619074738.GB1427@infradead.org>
Date:   Fri, 19 Jun 2020 00:47:38 -0700
From:   Christoph Hellwig <hch@...radead.org>
To:     Masahiro Yamada <masahiroy@...nel.org>
Cc:     linux-kbuild@...r.kernel.org,
        Douglas Anderson <dianders@...omium.org>,
        Guenter Roeck <linux@...ck-us.net>,
        Jonas Karlman <jonas@...boo.se>,
        Michal Marek <michal.lkml@...kovi.net>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] Revert "Makefile: install modules.builtin even if
 CONFIG_MODULES=n"

On Fri, Jun 19, 2020 at 01:48:23PM +0900, Masahiro Yamada wrote:
> This reverts commit e0b250b57dcf403529081e5898a9de717f96b76b.
> 
> Now that "make install" copies modules.builtin to $(INSTALL_MOD_PATH),
> it breaks systems that do not set INSTALL_MOD_PATH for "make install".
> 
> While modules.builtin is useful for CONFIG_MODULES=n, this way gives
> unexpected impact to existing systems. Maybe "make modules_install"
> can install modules.builtin irrespective of CONFIG_MODULES as Jonas
> originally suggested. Anyway, this commit should be reverted ASAP.

What is the "unexpected impact?  This commit log needs to explain
that.