linux-kernel - Re: asm-x86/byteorder.h: clean up for userspace

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Date:	Tue, 01 Jan 2008 13:19:42 -0800
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Christoph Hellwig <hch@...radead.org>
CC:	Mike Frysinger <vapier@...too.org>, tglx@...utronix.de,
	mingo@...hat.com, Andi Kleen <andi@...stfloor.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: asm-x86/byteorder.h: clean up for userspace

Christoph Hellwig wrote:
> On Mon, Dec 31, 2007 at 01:12:45PM -0500, Mike Frysinger wrote:
>> Since asm-x86/byteorder.h is exported to userspace, use __asm__ rather than
>> asm in its code.
> 
> The correct fix is to not export it to userspace.

Unfortunately, it's historically been provided, for over 15 years.  It's 
also trivial to export, without funnies, and it's *useful* to userspace, 
as it provides an interface sorely lacking from the stock libc interfaces.

So please do provide it, even though it's arguably the wrong thing.  The 
downside is worse.

	-hpa
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