From: Masahiro Yamada <masahiroy@kernel.org>
To: Nick Desaulniers <ndesaulniers@google.com>
Cc: Michal Marek <michal.lkml@markovi.net>,
Nathan Chancellor <nathan@kernel.org>, Tom Rix <trix@redhat.com>,
Linux Kbuild mailing list <linux-kbuild@vger.kernel.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
clang-built-linux <llvm@lists.linux.dev>, X86 ML <x86@kernel.org>,
Dmitrii Bundin <dmitrii.bundin.a@gmail.com>,
Fangrui Song <maskray@google.com>,
Alexey Alexandrov <aalexand@google.com>,
Bill Wendling <morbo@google.com>,
Greg Thelen <gthelen@google.com>,
Arvind Sankar <nivedita@alum.mit.edu>
Subject: Re: [PATCH v3 1/5] x86/boot/compressed: prefer cc-option for CFLAGS additions
Date: Sat, 10 Sep 2022 06:05:45 +0900 [thread overview]
Message-ID: <CAK7LNARqU4246yPxBr75464wbbnoxb-sLL+UO-fYrkhtFzPEqw@mail.gmail.com> (raw)
In-Reply-To: <20220907045907.484043-2-ndesaulniers@google.com>
On Wed, Sep 7, 2022 at 1:59 PM Nick Desaulniers <ndesaulniers@google.com> wrote:
>
> as-option tests new options using KBUILD_CFLAGS, which causes problems
> when using as-option to update KBUILD_AFLAGS because many compiler
> options are not valid assembler options.
>
> This is being fixed in a follow up patch. Before doing so, move the
> assembler test for -Wa,-mrelax-relocations=no from using as-option to
> cc-option.
>
> Cc: Arvind Sankar <nivedita@alum.mit.edu>
> Cc: x86@kernel.org
> Link: https://lore.kernel.org/llvm/CAK7LNATcHt7GcXZ=jMszyH=+M_LC9Qr6yeAGRCBbE6xriLxtUQ@mail.gmail.com/
> Suggested-by: Masahiro Yamada <masahiroy@kernel.org>
> Reviewed-by: Nathan Chancellor <nathan@kernel.org>
> Tested-by: Nathan Chancellor <nathan@kernel.org>
> Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
01 and 02, applied to linux-kbuild/fixes.
Thanks.
> ---
> Changes v2 -> v3:
> * Reword commit message as per Nathan.
> * Pick up Nathan's RB/TB tags.
>
> Changes v1 -> v2:
> * Split off of v1 [1/3].
> * Use cc-option to update CFLAGS, as per Masahiro.
> * Add Masahiro's Suggested-by, Cc Arvind.
>
> arch/x86/boot/compressed/Makefile | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/arch/x86/boot/compressed/Makefile b/arch/x86/boot/compressed/Makefile
> index 35ce1a64068b..85934204d905 100644
> --- a/arch/x86/boot/compressed/Makefile
> +++ b/arch/x86/boot/compressed/Makefile
> @@ -49,7 +49,7 @@ KBUILD_CFLAGS += $(call cc-option,-fmacro-prefix-map=$(srctree)/=)
> KBUILD_CFLAGS += -fno-asynchronous-unwind-tables
> KBUILD_CFLAGS += -D__DISABLE_EXPORTS
> # Disable relocation relaxation in case the link is not PIE.
> -KBUILD_CFLAGS += $(call as-option,-Wa$(comma)-mrelax-relocations=no)
> +KBUILD_CFLAGS += $(call cc-option,-Wa$(comma)-mrelax-relocations=no)
> KBUILD_CFLAGS += -include $(srctree)/include/linux/hidden.h
>
> # sev.c indirectly inludes inat-table.h which is generated during
> --
> 2.37.2.789.g6183377224-goog
>
--
Best Regards
Masahiro Yamada
next prev parent reply other threads:[~2022-09-09 21:06 UTC|newest]
Thread overview: 53+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-07 4:59 [PATCH v3 0/5] fix debug info for asm and DEBUG_INFO_SPLIT Nick Desaulniers
2022-09-07 4:59 ` [PATCH v3 1/5] x86/boot/compressed: prefer cc-option for CFLAGS additions Nick Desaulniers
2022-09-09 21:05 ` Masahiro Yamada [this message]
2022-09-07 4:59 ` [PATCH v3 2/5] Makefile.compiler: Use KBUILD_AFLAGS for as-option Nick Desaulniers
2022-09-09 21:06 ` Masahiro Yamada
2022-09-07 4:59 ` [PATCH v3 3/5] Makefile.compiler: replace cc-ifversion with compiler-specific macros Nick Desaulniers
2022-09-09 21:59 ` Masahiro Yamada
2022-09-07 4:59 ` [PATCH v3 4/5] Makefile.debug: re-enable debug info for .S files Nick Desaulniers
2022-09-07 4:59 ` [PATCH v3 5/5] Makefile.debug: set -g unconditional on CONFIG_DEBUG_INFO_SPLIT Nick Desaulniers
2022-09-09 20:56 ` Masahiro Yamada
2022-09-09 21:02 ` Masahiro Yamada
2022-09-19 17:08 ` [PATCH v4] Makefile.compiler: replace cc-ifversion with compiler-specific macros Nick Desaulniers
2022-09-23 19:44 ` Masahiro Yamada
2022-09-24 14:28 ` Masahiro Yamada
2022-09-25 1:22 ` Masahiro Yamada
2022-09-26 21:41 ` Nick Desaulniers
2023-04-27 11:53 ` Shreeya Patel
2023-04-28 7:41 ` Thorsten Leemhuis
2023-05-02 9:48 ` Shreeya Patel
2023-05-02 11:58 ` Linux regression tracking (Thorsten Leemhuis)
2023-04-28 17:27 ` Nick Desaulniers
2023-05-03 21:02 ` Shreeya Patel
2023-05-03 21:15 ` Nick Desaulniers
2023-05-03 22:33 ` Shreeya Patel
2023-05-15 23:01 ` Nick Desaulniers
2023-05-17 8:34 ` Shreeya Patel
2023-05-17 15:39 ` Ricardo Cañuelo
2023-05-17 16:27 ` Nick Desaulniers
2023-05-18 14:23 ` Ricardo Cañuelo
2023-05-18 21:12 ` Nick Desaulniers
2023-05-19 8:35 ` Ricardo Cañuelo
2023-05-19 15:57 ` Nick Desaulniers
2023-05-22 10:09 ` Ricardo Cañuelo
2023-05-22 16:52 ` Greg KH
2023-05-22 19:52 ` Nick Desaulniers
2023-05-22 20:01 ` Greg KH
2023-05-22 20:16 ` Nick Desaulniers
2023-05-23 10:27 ` Shreeya Patel
2023-05-23 21:27 ` Nick Desaulniers
2023-06-12 10:10 ` Shreeya Patel
2023-06-20 4:19 ` Masahiro Yamada
2023-07-10 12:09 ` Linux regression tracking (Thorsten Leemhuis)
2023-07-11 11:16 ` Shreeya Patel
2023-08-29 11:28 ` Linux regression tracking (Thorsten Leemhuis)
2023-09-11 10:05 ` Thorsten Leemhuis
2023-09-15 9:33 ` Shreeya Patel
2023-09-30 10:24 ` Masahiro Yamada
2022-09-19 17:30 ` [PATCH v4] Makefile.debug: set -g unconditional on CONFIG_DEBUG_INFO_SPLIT Nick Desaulniers
2022-09-24 1:34 ` Masahiro Yamada
2022-09-19 17:45 ` [PATCH v4] Makefile.debug: re-enable debug info for .S files Nick Desaulniers
2022-09-24 2:11 ` Masahiro Yamada
2022-09-24 2:20 ` Nick Desaulniers
2022-09-24 6:43 ` Masahiro Yamada
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