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From: David Howells <dhowells@redhat.com>
In-Reply-To: <20070815153335.GA23593@gondor.apana.org.au>
References: <20070815153335.GA23593@gondor.apana.org.au> <20070809131423.GA9927@shell.boston.redhat.com> <Pine.LNX.4.64.0708141529310.32693@schroedinger.engr.sgi.com> <alpine.LFD.0.999.0708150417240.6482@enigma.security.iitk.ac.in> <46C2D6F3.3070707@s5r6.in-berlin.de> <alpine.LFD.0.999.0708151713080.16414@enigma.security.iitk.ac.in> <46C2FADB.7020407@s5r6.in-berlin.de> <alpine.LFD.0.999.0708151906330.16414@enigma.security.iitk.ac.in> <20070815142516.GB9645@linux.vnet.ibm.com> 
To: Herbert Xu <herbert@gondor.apana.org.au>
Cc: dhowells@redhat.com, "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>,
       Satyam Sharma <satyam@infradead.org>,
       Stefan Richter <stefanr@s5r6.in-berlin.de>,
       Christoph Lameter <clameter@sgi.com>, Chris Snook <csnook@redhat.com>,
       Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
       linux-arch@vger.kernel.org,
       Linus Torvalds <torvalds@linux-foundation.org>, netdev@vger.kernel.org,
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Subject: Re: [PATCH 0/24] make atomic_read() behave consistently across all architectures
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Date: Wed, 15 Aug 2007 19:19:57 +0100
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Herbert Xu <herbert@gondor.apana.org.au> wrote:

> Let's turn this around.  Can you give a single example where
> the volatile semantics is needed in a legitimate way?

Accessing H/W registers?  But apart from that...

David
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