linux-kernel - Re: [PATCH 15/21] powerpc: Use generic posix

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Message-ID: <4F3D6DE6.4080209@zytor.com>
Date:	Thu, 16 Feb 2012 12:58:14 -0800
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Benjamin Herrenschmidt <benh@...nel.crashing.org>
CC:	David Howells <dhowells@...hat.com>, linux-arch@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Paul Mackerras <paulus@...ba.org>
Subject: Re: [PATCH 15/21] powerpc: Use generic posix_types.h

On 02/16/2012 12:26 PM, Benjamin Herrenschmidt wrote:
> On Thu, 2012-02-16 at 13:44 +0000, David Howells wrote:
>> PowerPC exports __FD_SET() and co. to userspace under some circumstances,
>> therefore this patch potentially breaks the userspace ABI.  Is this okay, Ben?
>
> I don't know why we would need that in userspace, unless some tools I
> don't know about exploit them (hint: there shouldn't be)
>
> I'm happy to remove them and see if anybody complains.
>

I think they are cut-and-paste from the old libc5-enabled i386.  Note 
that __GNUC__ disables it.

	-hpa

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