linux-kernel - Re: [tip:x86/mce] x86/bitops: Move BIT

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Message-ID: <4FBD10D5.6080602@zytor.com>
Date:	Wed, 23 May 2012 09:31:17 -0700
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
CC:	Borislav Petkov <borislav.petkov@....com>, mingo@...nel.org,
	linux-kernel@...r.kernel.org, frank.arnold@....com,
	akpm@...ux-foundation.org, torvalds@...ux-foundation.org,
	tglx@...utronix.de, linux-tip-commits@...r.kernel.org
Subject: Re: [tip:x86/mce] x86/bitops: Move BIT_64() for a wider use

>>
>> Actually we need a BIT() macro that works both
>> on 32- and 64-bit. But that won't be that easy:
>> http://lkml.indiana.edu/hypermail/linux/kernel/1010.1/02335.html
>>
>> And it should return UL for shift values < 32 and ULL otherwise.
> 

Why do you want that behavior?  That seems bizarre...

	-hpa

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

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