Re: [PATCH 0/4] kbuild: generate module.builtin.modinfo from vmlinux.unstripped instead of vmlinux.o

[Alexey Gladkov <legion@kernel.org>]

On Fri, Jun 06, 2025 at 01:10:22PM +0900, Masahiro Yamada wrote:
> 
> Currently, modules.builtin.modinfo is generated from vmlinux.o, which
> occurs before modpost. So, we cannot include modpost-processed data
> into modules.builtin.modinfo.
> 
> This patch set allows to generate modules.builtin.modinfo from
> vmlinux.unstripped.
> 
> I think this patch set will be useful to clean up this:
> 
> https://lore.kernel.org/linux-kbuild/cover.1748335606.git.legion@kernel.org/T/#m98813857abf2101bdf67f1b8529a44f5c7f4746d
> 
> The original approach generates modules.builtin.modinfo from two files
> and then cancatenates them into a single file.
> 
> I prefer generating modules.builtin.modinfo from a single point.
> 
> I think 1/4 is a good cleanup regardless of modules.builtin.modinfo
> 
> 
> Masahiro Yamada (4):
>   module: remove meaningless 'name' parameter from __MODULE_INFO()
>   kbuild: always create intermediate vmlinux.unstripped
>   kbuild: keep .modinfo section in vmlinux.unstripped
>   kbuild: extract modules.builtin.modinfo from vmlinux.unstripped
> 
>  include/asm-generic/vmlinux.lds.h |  2 +-
>  include/crypto/algapi.h           |  4 +-
>  include/linux/module.h            |  3 --
>  include/linux/moduleparam.h       |  9 ++--
>  include/net/tcp.h                 |  4 +-
>  scripts/Makefile.vmlinux          | 73 +++++++++++++++++++++----------
>  scripts/Makefile.vmlinux_o        | 26 +----------
>  scripts/mksysmap                  |  3 ++
>  8 files changed, 63 insertions(+), 61 deletions(-)

Hm. It doesn't work for me :(

I haven't been able to figure out what's wrong yet.

make[3]: *** No rule to make target 'vmlinux', needed by 'arch/x86/boot/compressed/../voffset.h'.  Stop.
make[2]: *** [arch/x86/boot/Makefile:96: arch/x86/boot/compressed/vmlinux] Error 2
make[1]: *** [arch/x86/Makefile:320: bzImage] Error 2
make: *** [Makefile:248: __sub-make] Error 2

-- 
Rgrds, legion