linux-kernel - Re: [PATCH 2/7] x86: memtest: introduce array to store memtest patterns

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Message-ID: <4995B35F.5080708@zytor.com>
Date:	Fri, 13 Feb 2009 09:52:31 -0800
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Andreas Herrmann <andreas.herrmann3@....com>
CC:	Ingo Molnar <mingo@...e.hu>, Thomas Gleixner <tglx@...utronix.de>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/7] x86: memtest: introduce array to store memtest patterns

Andreas Herrmann wrote:
> -#define _MAX_MEM_PATTERNS 4
> +static unsigned long patterns[] = {
> +	0UL,
> +	-1UL,
> +#ifdef CONFIG_X86_64
> +	0x5555555555555555UL,
> +	0xaaaaaaaaaaaaaaaaUL,
> +#else
> +	0x55555555UL,
> +	0xaaaaaaaaUL,
> +#endif
> +};

Why not just use u64 for the pattern even on 32 bits?

	-hpa

-- 
H. Peter Anvin, Intel Open Source Technology Center
I work for Intel.  I don't speak on their behalf.

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