linux-kernel - Re: [PATCH] x86: uapi: Fix __BITS_PER

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Message-ID: <20151001082333.GA1486@gmail.com>
Date:	Thu, 1 Oct 2015 10:23:33 +0200
From:	Ingo Molnar <mingo@...nel.org>
To:	Ben Hutchings <ben@...adent.org.uk>
Cc:	x86@...nel.org, LKML <linux-kernel@...r.kernel.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>
Subject: Re: [PATCH] x86: uapi: Fix __BITS_PER_LONG for x32


* Ben Hutchings <ben@...adent.org.uk> wrote:

> diff --git a/arch/x86/include/uapi/asm/bitsperlong.h b/arch/x86/include/uapi/asm/bitsperlong.h
> index b0ae1c4..217909b 100644
> --- a/arch/x86/include/uapi/asm/bitsperlong.h
> +++ b/arch/x86/include/uapi/asm/bitsperlong.h
> @@ -1,7 +1,7 @@
>  #ifndef __ASM_X86_BITSPERLONG_H
>  #define __ASM_X86_BITSPERLONG_H
>  
> -#ifdef __x86_64__
> +#if defined(__x86_64__) && !defined(__ILP32__)
>  # define __BITS_PER_LONG 64

Can we write this as:

   #ifdef __ILP64__

?

Thanks,

	Ingo
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