From mboxrd@z Thu Jan  1 00:00:00 1970
From: Nick Piggin <npiggin@suse.de>
Subject: Re: [rfc] data race in page table setup/walking?
Date: Fri, 2 May 2008 03:43:37 +0200
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To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Hugh Dickins <hugh@veritas.com>, linux-arch@vger.kernel.org, Linux Memory Management List <linux-mm@kvack.org>, Benjamin Herrenschmidt <benh@kernel.crashing.org>

On Thu, May 01, 2008 at 06:33:45PM -0700, Linus Torvalds wrote:
> 
> 
> On Fri, 2 May 2008, Nick Piggin wrote:
> > 
> > I guess it is possible. But at least in the case of write address, you'd
> > have to wait for later stores anyway in order to do the alias detection,
> > which might be the most common case.
> 
> No, just the *address*. The data for the second store may not be ready, 
> but the address may have been resolved (and checked that it doesn't fault 
> etc) and the previous store may complete.

Yes in the case of other dependencies I agreed that it would be possible.
In the case of just address it doesn't really make sense.