linux-kernel - Re: [PATCH, take4] FUTEX : new PRIVATE futexes

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Message-ID: <461CACB6.8080307@yahoo.com.au>
Date:	Wed, 11 Apr 2007 19:39:02 +1000
From:	Nick Piggin <nickpiggin@...oo.com.au>
To:	Pierre Peiffer <pierre.peiffer@...l.net>
CC:	Eric Dumazet <dada1@...mosbay.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Dave Jones <davej@...hat.com>,
	Ulrich Drepper <drepper@...il.com>,
	Ingo Molnar <mingo@...e.hu>, Andi Kleen <ak@...e.de>,
	Ravikiran G Thirumalai <kiran@...lex86.org>,
	"Shai Fultheim (Shai@...lex86.org)" <shai@...lex86.org>,
	pravin b shelar <pravin.shelar@...softinc.com>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH, take4] FUTEX : new PRIVATE futexes

Pierre Peiffer wrote:
> Nick Piggin a écrit :
> 
>>
>> But... that isn't there in mainline. Why is it in -mm?
> 
> 
> This was introduced by lguest code....
> I did not follow exaclty why.

OK, that's no problem, then it can remain exported but we just
have to document and audit that callers must pass in an aligned
address. We can also BUG_ON(address & ~PAGE_MASK); to handle
the security aspect.

-- 
SUSE Labs, Novell Inc.
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