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Date:   Wed, 27 Sep 2023 16:05:04 -0700
From:   "H. Peter Anvin" <hpa@zytor.com>
To:     Alexey Dobriyan <adobriyan@gmail.com>,
        Thomas Gleixner <tglx@linutronix.de>,
        Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
        Dave Hansen <dave.hansen@linux.intel.com>
CC:     x86@kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] x86: compile boot code with -std=gnu11 too
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On September 27, 2023 8:42:11 AM PDT, Alexey Dobriyan <adobriyan@gmail=2Eco=
m> wrote:
>Use -std=3Dgnu11 for consistency with main kernel code=2E
>
>It doesn't seem to change anything in vmlinux=2E
>
>Signed-off-by: Alexey Dobriyan <adobriyan@gmail=2Ecom>
>---
>
> arch/x86/Makefile |    2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
>--- a/arch/x86/Makefile
>+++ b/arch/x86/Makefile
>@@ -43,7 +43,7 @@ endif
>=20
> # How to compile the 16-bit code=2E  Note we always compile for -march=
=3Di386;
> # that way we can complain to the user if the CPU is insufficient=2E
>-REALMODE_CFLAGS	:=3D -m16 -g -Os -DDISABLE_BRANCH_PROFILING -D__DISABLE_=
EXPORTS \
>+REALMODE_CFLAGS	:=3D -std=3Dgnu11 -m16 -g -Os -DDISABLE_BRANCH_PROFILING=
 -D__DISABLE_EXPORTS \
> 		   -Wall -Wstrict-prototypes -march=3Di386 -mregparm=3D3 \
> 		   -fno-strict-aliasing -fomit-frame-pointer -fno-pic \
> 		   -mno-mmx -mno-sse $(call cc-option,-fcf-protection=3Dnone)

Acked-by: H=2E Peter Anvin (Intel) <hpa@zytor=2Ecom>