Re: [PATCH] Revert "Makefile: install modules.builtin even if CONFIG_MODULES=n"

[Christoph Hellwig]

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.