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From:   Masahiro Yamada <masahiroy@kernel.org>
Date:   Wed, 22 Nov 2023 12:09:07 +0900
Message-ID: <CAK7LNAT-_07_h1_jG606VX0WjJq8dEW+C_4E0f28mjyqFnCWFw@mail.gmail.com>
Subject: Re: [PATCH] powerpc: add crtsavres.o to always-y instead of extra-y
To:     "Aneesh Kumar K.V" <aneesh.kumar@kernel.org>
Cc:     Nicholas Piggin <npiggin@gmail.com>,
        Michael Ellerman <mpe@ellerman.id.au>,
        Christophe Leroy <christophe.leroy@csgroup.eu>,
        linuxppc-dev@lists.ozlabs.org,
        Nathan Chancellor <nathan@kernel.org>,
        Tom Rix <trix@redhat.com>, llvm@lists.linux.dev,
        Nick Desaulniers <ndesaulniers@google.com>,
        linux-kernel@vger.kernel.org
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On Tue, Nov 21, 2023 at 6:55=E2=80=AFPM Aneesh Kumar K.V
<aneesh.kumar@kernel.org> wrote:
>
> "Nicholas Piggin" <npiggin@gmail.com> writes:
>
> > On Tue Nov 21, 2023 at 9:23 AM AEST, Masahiro Yamada wrote:
> >> crtsavres.o is linked to modules. However, as explained in commit
> >> d0e628cd817f ("kbuild: doc: clarify the difference between extra-y
> >> and always-y"), 'make modules' does not build extra-y.
> >>
> >> For example, the following command fails:
> >>
> >>   $ make ARCH=3Dpowerpc LLVM=3D1 KBUILD_MODPOST_WARN=3D1 mrproper ps3_=
defconfig modules
> >>     [snip]
> >>     LD [M]  arch/powerpc/platforms/cell/spufs/spufs.ko
> >>   ld.lld: error: cannot open arch/powerpc/lib/crtsavres.o: No such fil=
e or directory
> >>   make[3]: *** [scripts/Makefile.modfinal:56: arch/powerpc/platforms/c=
ell/spufs/spufs.ko] Error 1
> >>   make[2]: *** [Makefile:1844: modules] Error 2
> >>   make[1]: *** [/home/masahiro/workspace/linux-kbuild/Makefile:350: __=
build_one_by_one] Error 2
> >>   make: *** [Makefile:234: __sub-make] Error 2
> >>
> >
> > Thanks. Is this the correct Fixes tag?
> >
> > Fixes: d0e628cd817f ("powerpc/64: Do not link crtsavres.o in vmlinux")
> >
>
> I am finding a different commit ID:
>
> commit baa25b571a168aff5a13bfdc973f1229e2b12b63
> Author: Nicholas Piggin <npiggin@gmail.com>
> Date:   Fri May 12 01:56:49 2017 +1000
>
>     powerpc/64: Do not link crtsavres.o in vmlinux
>
>     The 64-bit linker creates save/restore functions on demand with final
>     links, so vmlinux does not require crtsavres.o.
>
>
> -aneesh


Yeah, I think the correct tag is:


Fixes: baa25b571a16 ("powerpc/64: Do not link crtsavres.o in vmlinux")


--=20
Best Regards
Masahiro Yamada