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From: Kees Cook <keescook@chromium.org>
To: Nick Desaulniers <ndesaulniers@google.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Linus Torvalds <torvalds@linux-foundation.org>,
Rasmus Villemoes <linux@rasmusvillemoes.dk>,
Nathan Chancellor <nathan@kernel.org>,
Masahiro Yamada <masahiroy@kernel.org>,
Joe Perches <joe@perches.com>, Arnd Bergmann <arnd@kernel.org>,
Stephen Rothwell <sfr@canb.auug.org.au>,
llvm@lists.linux.dev, linux-kernel@vger.kernel.org,
Peter Zijlstra <peterz@infradead.org>
Subject: Re: [PATCH 10/10] vmlinux.lds.h: remove old check for GCC 4.9
Date: Mon, 13 Sep 2021 09:28:38 -0700 [thread overview]
Message-ID: <202109130927.6E5447B04C@keescook> (raw)
In-Reply-To: <20210910234047.1019925-11-ndesaulniers@google.com>
On Fri, Sep 10, 2021 at 04:40:47PM -0700, Nick Desaulniers wrote:
> Now that GCC 5.1 is the minimally supported version of GCC, we can
> effectively revert
>
> commit 85c2ce9104eb ("sched, vmlinux.lds: Increase STRUCT_ALIGNMENT to
> 64 bytes for GCC-4.9")
>
> Cc: Peter Zijlstra <peterz@infradead.org>
> Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
> ---
> include/asm-generic/vmlinux.lds.h | 4 ----
> 1 file changed, 4 deletions(-)
>
> diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h
> index aa50bf2959fe..f2984af2b85b 100644
> --- a/include/asm-generic/vmlinux.lds.h
> +++ b/include/asm-generic/vmlinux.lds.h
> @@ -116,11 +116,7 @@
> * GCC 4.5 and later have a 32 bytes section alignment for structures.
> * Except GCC 4.9, that feels the need to align on 64 bytes.
> */
> -#if __GNUC__ == 4 && __GNUC_MINOR__ == 9
> -#define STRUCT_ALIGNMENT 64
> -#else
> #define STRUCT_ALIGNMENT 32
> -#endif
> #define STRUCT_ALIGN() . = ALIGN(STRUCT_ALIGNMENT)
Yeah, looking at users of the macro, I think it's best to keep the macro
instead of hard-coding it everywhere.
Acked-by: Kees Cook <keescook@chromium.org>
--
Kees Cook
next prev parent reply other threads:[~2021-09-13 16:28 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-10 23:40 [PATCH 00/10] raise minimum GCC version to 5.1 Nick Desaulniers
2021-09-10 23:40 ` [PATCH 01/10] Documentation: raise minimum supported version of GCC " Nick Desaulniers
2021-09-10 23:55 ` Nathan Chancellor
2021-09-11 0:16 ` Nick Desaulniers
2021-09-13 16:22 ` Kees Cook
2021-09-10 23:40 ` [PATCH 02/10] compiler.h: drop fallback overflow checkers Nick Desaulniers
2021-09-11 0:04 ` Nathan Chancellor
2021-09-14 15:33 ` Nick Desaulniers
2021-09-14 16:04 ` Nathan Chancellor
2021-09-13 16:21 ` Kees Cook
2021-09-10 23:40 ` [PATCH 03/10] mm/ksm: remove old GCC 4.9+ check Nick Desaulniers
2021-09-11 0:07 ` Nathan Chancellor
2021-09-13 16:22 ` Kees Cook
2021-09-10 23:40 ` [PATCH 04/10] Kconfig.debug: drop GCC 5+ version check for DWARF5 Nick Desaulniers
2021-09-11 0:08 ` Nathan Chancellor
2021-09-13 16:23 ` Kees Cook
2021-09-10 23:40 ` [PATCH 05/10] riscv: remove Kconfig check for GCC version for ARCH_RV64I Nick Desaulniers
2021-09-11 0:09 ` Nathan Chancellor
2021-09-13 16:23 ` Kees Cook
2021-10-05 0:40 ` Palmer Dabbelt
2021-10-05 0:50 ` Kees Cook
2021-10-05 0:57 ` Palmer Dabbelt
2021-09-10 23:40 ` [PATCH 06/10] powerpc: remove GCC version check for UPD_CONSTR Nick Desaulniers
2021-09-10 23:48 ` Nathan Chancellor
2021-09-11 10:43 ` Michael Ellerman
2021-09-11 15:34 ` Christophe Leroy
2021-09-10 23:40 ` [PATCH 07/10] arm64: remove GCC version check for ARCH_SUPPORTS_INT128 Nick Desaulniers
2021-09-11 0:10 ` Nathan Chancellor
2021-09-13 16:25 ` Kees Cook
2021-09-16 13:23 ` Catalin Marinas
2021-09-10 23:40 ` [PATCH 08/10] Makefile: drop GCC < 5 -fno-var-tracking-assignments workaround Nick Desaulniers
2021-09-11 0:11 ` Nathan Chancellor
2021-09-13 16:25 ` Kees Cook
2021-09-10 23:40 ` [PATCH 09/10] compiler-gcc.h: drop checks for older GCC versions Nick Desaulniers
2021-09-11 0:12 ` Nathan Chancellor
2021-09-13 16:26 ` Kees Cook
2021-09-10 23:40 ` [PATCH 10/10] vmlinux.lds.h: remove old check for GCC 4.9 Nick Desaulniers
2021-09-10 23:50 ` Nathan Chancellor
2021-09-14 15:21 ` Nick Desaulniers
2021-09-13 16:28 ` Kees Cook [this message]
2021-09-11 2:19 ` [PATCH 00/10] raise minimum GCC version to 5.1 Kees Cook
2021-09-11 10:42 ` Michael Ellerman
2021-09-13 9:49 ` Pavel Machek
2021-09-13 16:20 ` Kees Cook
2021-09-13 11:27 ` Arnd Bergmann
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