From: Nathan Chancellor <natechancellor@gmail.com>
To: Masahiro Yamada <masahiroy@kernel.org>
Cc: linux-kbuild@vger.kernel.org, Ingo Molnar <mingo@redhat.com>,
Michal Marek <michal.lkml@markovi.net>,
Nick Desaulniers <ndesaulniers@google.com>,
clang-built-linux@googlegroups.com, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 3/4] kbuild: remove cc-option test of -fno-stack-check
Date: Thu, 10 Sep 2020 09:37:16 -0700 [thread overview]
Message-ID: <20200910163716.GC3119896@ubuntu-n2-xlarge-x86> (raw)
In-Reply-To: <20200910135120.3527468-3-masahiroy@kernel.org>
On Thu, Sep 10, 2020 at 10:51:19PM +0900, Masahiro Yamada wrote:
> The minimal compiler versions, GCC 4.9 and Clang 10 support this flag.
>
> Here is the godbolt:
> https://godbolt.org/z/59cK6o
>
> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
This flag is technically ignored by clang (see commit
05b0798916f01690b5903302e51f3136274e291f) but that obviously does not
matter for the sake of this.
Reviewed-by: Nathan Chancellor <natechancellor@gmail.com>
> ---
>
> Makefile | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/Makefile b/Makefile
> index 1b6abecc5cab..5102c89d3167 100644
> --- a/Makefile
> +++ b/Makefile
> @@ -934,7 +934,7 @@ KBUILD_CFLAGS += -fno-merge-all-constants
> KBUILD_CFLAGS += $(call cc-option,-fmerge-constants)
>
> # Make sure -fstack-check isn't enabled (like gentoo apparently did)
> -KBUILD_CFLAGS += $(call cc-option,-fno-stack-check,)
> +KBUILD_CFLAGS += -fno-stack-check
>
> # conserve stack if available
> KBUILD_CFLAGS += $(call cc-option,-fconserve-stack)
> --
> 2.25.1
>
next prev parent reply other threads:[~2020-09-10 16:40 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-10 13:51 [PATCH 1/4] kbuild: remove cc-option test of -fno-strict-overflow Masahiro Yamada
2020-09-10 13:51 ` [PATCH 2/4] kbuild: remove cc-option test of -fno-merge-all-constants Masahiro Yamada
2020-09-10 16:33 ` Nathan Chancellor
2020-09-10 16:41 ` Masahiro Yamada
2020-09-10 13:51 ` [PATCH 3/4] kbuild: remove cc-option test of -fno-stack-check Masahiro Yamada
2020-09-10 16:37 ` Nathan Chancellor [this message]
2020-09-10 13:51 ` [PATCH 4/4] kbuild: remove cc-option test of -Werror=date-time Masahiro Yamada
2020-09-10 16:43 ` Nathan Chancellor
2020-09-10 16:26 ` [PATCH 1/4] kbuild: remove cc-option test of -fno-strict-overflow Nathan Chancellor
2020-09-11 15:22 ` Will Deacon
2020-09-14 12:51 ` Masahiro Yamada
2020-09-14 13:20 ` Will Deacon
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