Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754732Ab1BOLxn (ORCPT ); Tue, 15 Feb 2011 06:53:43 -0500 Received: from mail-gw0-f46.google.com ([74.125.83.46]:36632 "EHLO mail-gw0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754512Ab1BOLxl convert rfc822-to-8bit (ORCPT ); Tue, 15 Feb 2011 06:53:41 -0500 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type:content-transfer-encoding; b=DFk4Ln9dF9ele1mfuifDi3a3ZIp1PHQiw9I0p6ujZgKPi0uLlm5/kyOcwYHZNlt17H Q4tOHi6oeEqRT/8riqk4oYjJHPf5B7aSpCyF0SFyHEsbNCXF6TX0E0hPvM6SPd9t0+jr KMjKen5ptoyu4jWRGl5zo43W/uKrbtLQRqtvQ= MIME-Version: 1.0 In-Reply-To: <20110214230902.GM2256@linux.vnet.ibm.com> References: <1297707868.5226.189.camel@laptop> <1297718964.23343.75.camel@gandalf.stny.rr.com> <1297719576.23343.80.camel@gandalf.stny.rr.com> <20110214.134600.179933733.davem@davemloft.net> <20110214223755.436e7cf4@mfleming-mobl1.ger.corp.intel.com> <20110214230902.GM2256@linux.vnet.ibm.com> Date: Tue, 15 Feb 2011 11:53:37 +0000 Message-ID: Subject: Re: [PATCH 0/2] jump label: 2.6.38 updates From: Will Newton To: paulmck@linux.vnet.ibm.com Cc: Mathieu Desnoyers , Matt Fleming , David Miller , rostedt@goodmis.org, peterz@infradead.org, jbaron@redhat.com, hpa@zytor.com, mingo@elte.hu, tglx@linutronix.de, andi@firstfloor.org, roland@redhat.com, rth@redhat.com, masami.hiramatsu.pt@hitachi.com, fweisbec@gmail.com, avi@redhat.com, sam@ravnborg.org, ddaney@caviumnetworks.com, michael@ellerman.id.au, linux-kernel@vger.kernel.org, vapier@gentoo.org, cmetcalf@tilera.com, dhowells@redhat.com, schwidefsky@de.ibm.com, heiko.carstens@de.ibm.com, benh@kernel.crashing.org Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 803 Lines: 18 On Mon, Feb 14, 2011 at 11:09 PM, Paul E. McKenney wrote: Hi Paul, > What CPU family are we talking about here? ?For cache coherent CPUs, > cache coherence really is supposed to work, even for mixed atomic and > non-atomic instructions to the same variable. Is there a specific situation you can think of where this would be a problem? I have to admit to a certain amount of unease with the design our hardware guys came up with, but I don't have a specific case where it won't work, just cases where it is less than optimal. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/