Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757167Ab1FUUgS (ORCPT ); Tue, 21 Jun 2011 16:36:18 -0400 Received: from wolverine01.qualcomm.com ([199.106.114.254]:6533 "EHLO wolverine01.qualcomm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751588Ab1FUUgQ (ORCPT ); Tue, 21 Jun 2011 16:36:16 -0400 X-IronPort-AV: E=McAfee;i="5400,1158,6384"; a="99184497" Message-ID: <4E0100BF.6080500@codeaurora.org> Date: Tue, 21 Jun 2011 13:36:15 -0700 From: Stephen Boyd User-Agent: Mozilla/5.0 (X11; U; Linux i686 (x86_64); en-US; rv:1.9.2.17) Gecko/20110414 Thunderbird/3.1.10 MIME-Version: 1.0 To: Vincent Guittot CC: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linaro-dev@lists.linaro.org Subject: Re: [RFC] Add Arm cpu topology definition References: <4DFA5C2E.40507@codeaurora.org> In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1399 Lines: 29 On 06/16/2011 11:54 PM, Vincent Guittot wrote: > On 16 June 2011 21:40, Stephen Boyd wrote: >> The ARM ARM says these fields are IMPLEMENTATION DEFINED meaning that >> different vendors may attribute different meaning to these fields if >> they wish. Does that mean this should be a platform_*() function? >> > The ARM ARM also provides a recommended use of the fields of this > register and the TRM of each Cortex adds some details. On the cortex > A9, each platform can only set the value of the Cluster ID with the > CLUSTERID pins. I have tried to consolidate the value of MPIDR across > several platforms and they all match with the description. > > Have you got an example of a MPIDR register which doesn't match with > the implementation ? Not that I know of. I'm more concerned with how the ARM ARM has two recommended usages for these fields depending on virtualization or not. I suppose we can handle that issue when it arises (or does your implementation already handle that?) -- Sent by an employee of the Qualcomm Innovation Center, Inc. The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum. -- 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/