linux-kernel - Re: [PATCH 05/24] ARM64:UAPI: Set the correct __BITS_PER

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Date:	Tue, 17 Jun 2014 16:22:50 +0100
From:	Catalin Marinas <catalin.marinas@....com>
To:	Andrew Pinski <apinski@...ium.com>
Cc:	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 05/24] ARM64:UAPI: Set the correct __BITS_PER_LONG for
 ILP32.

On Sat, May 24, 2014 at 12:02:00AM -0700, Andrew Pinski wrote:
> diff --git a/arch/arm64/include/uapi/asm/bitsperlong.h b/arch/arm64/include/uapi/asm/bitsperlong.h
> index fce9c29..5e06c59 100644
> --- a/arch/arm64/include/uapi/asm/bitsperlong.h
> +++ b/arch/arm64/include/uapi/asm/bitsperlong.h
> @@ -16,7 +16,12 @@
>  #ifndef __ASM_BITSPERLONG_H
>  #define __ASM_BITSPERLONG_H
>  
> -#define __BITS_PER_LONG 64
> +/* Assuming __LP64__ will be defined for native ELF64's and not for ILP32. */
> +#ifdef __LP64__
> +# define __BITS_PER_LONG 64
> +#else
> +# define __BITS_PER_LONG 32
> +#endif

I think it's enough to just define it for the __LP64__ case.

>  #include <asm-generic/bitsperlong.h>

The asm-generic definition if 32 by default.

-- 
Catalin
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