[<prev] [next>] [<thread-prev] [day] [month] [year] [list]
Message-ID: <d3e255e4746de44c9903c4433616d44ffcf18d1b.camel@xry111.site>
Date: Tue, 07 Mar 2023 15:51:57 +0800
From: Xi Ruoyao <xry111@...111.site>
To: Tiezhu Yang <yangtiezhu@...ngson.cn>,
Huacai Chen <chenhuacai@...nel.org>,
WANG Xuerui <kernel@...0n.name>
Cc: loongarch@...ts.linux.dev, linux-kernel@...r.kernel.org,
loongson-kernel@...ts.loongnix.cn
Subject: Re: [PATCH] tools/arch/loongarch: Use __SIZEOF_LONG__ to define
__BITS_PER_LONG
On Tue, 2023-03-07 at 15:39 +0800, Tiezhu Yang wrote:
> Although __SIZEOF_POINTER__ is equal with _SIZEOF_LONG__ on LoongArch,
> it is better to use __SIZEOF_LONG__ to define __BITS_PER_LONG to keep
> consistent between arch/loongarch/include/uapi/asm/bitsperlong.h and
> tools/arch/loongarch/include/uapi/asm/bitsperlong.h.
I believe we should unify bitsperlong.h for all ports to use
(__SIZEOF_LONG__ * 8). Now we specify GCC >= 5.1 or Clang (LLVM) >=
11.0.0 in min-tool-version.sh, where __SIZEOF_LONG__ is usable [1]. The
only remaining compiler is ICC, which is deprecated and won't be
supported for building the kernel after 6.3 [2].
[1]:https://gcc.godbolt.org/z/cnvW38vj6
[2]:https://www.phoronix.com/news/Linux-6.3-Drops-Intel-ICC
>
> Signed-off-by: Tiezhu Yang <yangtiezhu@...ngson.cn>
> ---
> tools/arch/loongarch/include/uapi/asm/bitsperlong.h | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/tools/arch/loongarch/include/uapi/asm/bitsperlong.h
> b/tools/arch/loongarch/include/uapi/asm/bitsperlong.h
> index d4e32b3..00b4ba1 100644
> --- a/tools/arch/loongarch/include/uapi/asm/bitsperlong.h
> +++ b/tools/arch/loongarch/include/uapi/asm/bitsperlong.h
> @@ -2,7 +2,7 @@
> #ifndef __ASM_LOONGARCH_BITSPERLONG_H
> #define __ASM_LOONGARCH_BITSPERLONG_H
>
> -#define __BITS_PER_LONG (__SIZEOF_POINTER__ * 8)
> +#define __BITS_PER_LONG (__SIZEOF_LONG__ * 8)
>
> #include <asm-generic/bitsperlong.h>
>
--
Xi Ruoyao <xry111@...111.site>
School of Aerospace Science and Technology, Xidian University
Powered by blists - more mailing lists