From: "Nicholas Piggin" <npiggin@gmail.com>
To: "Masahiro Yamada" <masahiroy@kernel.org>,
"Michael Ellerman" <mpe@ellerman.id.au>,
"Christophe Leroy" <christophe.leroy@csgroup.eu>,
<linuxppc-dev@lists.ozlabs.org>
Cc: "Nathan Chancellor" <nathan@kernel.org>,
"Nick Desaulniers" <ndesaulniers@google.com>,
"Tom Rix" <trix@redhat.com>, <linux-kernel@vger.kernel.org>,
<llvm@lists.linux.dev>
Subject: Re: [PATCH] powerpc: add crtsavres.o to always-y instead of extra-y
Date: Tue, 21 Nov 2023 10:51:34 +1000 [thread overview]
Message-ID: <CX42TU4QHS1Z.A0UUHMDAMZOL@wheely> (raw)
In-Reply-To: <20231120232332.4100288-1-masahiroy@kernel.org>
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=powerpc LLVM=1 KBUILD_MODPOST_WARN=1 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 file or directory
> make[3]: *** [scripts/Makefile.modfinal:56: arch/powerpc/platforms/cell/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")
Hmm, looks like LLD might just do this now automatically for us
too without --save-restore-funcs (https://reviews.llvm.org/D79977).
But we probably still need it for older versions, so we still need
your patch.
Reviewed-by: Nicholas Piggin <npiggin@gmail.com>
> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
> ---
>
> arch/powerpc/lib/Makefile | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/arch/powerpc/lib/Makefile b/arch/powerpc/lib/Makefile
> index 51ad0397c17a..6eac63e79a89 100644
> --- a/arch/powerpc/lib/Makefile
> +++ b/arch/powerpc/lib/Makefile
> @@ -45,7 +45,7 @@ obj-$(CONFIG_FUNCTION_ERROR_INJECTION) += error-inject.o
> # so it is only needed for modules, and only for older linkers which
> # do not support --save-restore-funcs
> ifndef CONFIG_LD_IS_BFD
> -extra-$(CONFIG_PPC64) += crtsavres.o
> +always-$(CONFIG_PPC64) += crtsavres.o
> endif
>
> obj-$(CONFIG_PPC_BOOK3S_64) += copyuser_power7.o copypage_power7.o \
WARNING: multiple messages have this Message-ID (diff)
From: "Nicholas Piggin" <npiggin@gmail.com>
To: "Masahiro Yamada" <masahiroy@kernel.org>,
"Michael Ellerman" <mpe@ellerman.id.au>,
"Christophe Leroy" <christophe.leroy@csgroup.eu>,
<linuxppc-dev@lists.ozlabs.org>
Cc: Nathan Chancellor <nathan@kernel.org>, Tom Rix <trix@redhat.com>,
llvm@lists.linux.dev, Nick Desaulniers <ndesaulniers@google.com>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] powerpc: add crtsavres.o to always-y instead of extra-y
Date: Tue, 21 Nov 2023 10:51:34 +1000 [thread overview]
Message-ID: <CX42TU4QHS1Z.A0UUHMDAMZOL@wheely> (raw)
In-Reply-To: <20231120232332.4100288-1-masahiroy@kernel.org>
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=powerpc LLVM=1 KBUILD_MODPOST_WARN=1 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 file or directory
> make[3]: *** [scripts/Makefile.modfinal:56: arch/powerpc/platforms/cell/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")
Hmm, looks like LLD might just do this now automatically for us
too without --save-restore-funcs (https://reviews.llvm.org/D79977).
But we probably still need it for older versions, so we still need
your patch.
Reviewed-by: Nicholas Piggin <npiggin@gmail.com>
> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
> ---
>
> arch/powerpc/lib/Makefile | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/arch/powerpc/lib/Makefile b/arch/powerpc/lib/Makefile
> index 51ad0397c17a..6eac63e79a89 100644
> --- a/arch/powerpc/lib/Makefile
> +++ b/arch/powerpc/lib/Makefile
> @@ -45,7 +45,7 @@ obj-$(CONFIG_FUNCTION_ERROR_INJECTION) += error-inject.o
> # so it is only needed for modules, and only for older linkers which
> # do not support --save-restore-funcs
> ifndef CONFIG_LD_IS_BFD
> -extra-$(CONFIG_PPC64) += crtsavres.o
> +always-$(CONFIG_PPC64) += crtsavres.o
> endif
>
> obj-$(CONFIG_PPC_BOOK3S_64) += copyuser_power7.o copypage_power7.o \
next prev parent reply other threads:[~2023-11-21 0:51 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-11-20 23:23 [PATCH] powerpc: add crtsavres.o to always-y instead of extra-y Masahiro Yamada
2023-11-20 23:23 ` Masahiro Yamada
2023-11-21 0:51 ` Nicholas Piggin [this message]
2023-11-21 0:51 ` Nicholas Piggin
2023-11-21 9:55 ` Aneesh Kumar K.V
2023-11-22 3:09 ` Masahiro Yamada
2023-11-22 3:09 ` Masahiro Yamada
2023-11-22 12:54 ` Michael Ellerman
2023-11-22 12:54 ` Michael Ellerman
2024-01-30 9:54 ` Jan Stancek
2024-01-30 9:54 ` Jan Stancek
2024-02-05 11:50 ` Michael Ellerman
2024-02-05 11:50 ` Michael Ellerman
2024-02-05 13:21 ` Jan Stancek
2024-02-05 13:21 ` Jan Stancek
2024-02-05 20:50 ` Masahiro Yamada
2024-02-05 20:50 ` Masahiro Yamada
2023-12-07 12:38 ` Michael Ellerman
2023-12-07 12:38 ` Michael Ellerman
-- strict thread matches above, loose matches on Subject: below --
2023-01-19 8:24 Masahiro Yamada
2023-01-19 8:24 ` Masahiro Yamada
2023-01-19 18:44 ` Nathan Chancellor
2023-01-19 18:44 ` Nathan Chancellor
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