From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 01387C433EF for ; Tue, 7 Dec 2021 09:14:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233397AbhLGJR4 (ORCPT ); Tue, 7 Dec 2021 04:17:56 -0500 Received: from frasgout.his.huawei.com ([185.176.79.56]:4219 "EHLO frasgout.his.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233338AbhLGJRz (ORCPT ); Tue, 7 Dec 2021 04:17:55 -0500 Received: from fraeml702-chm.china.huawei.com (unknown [172.18.147.207]) by frasgout.his.huawei.com (SkyGuard) with ESMTP id 4J7ZMC43tRz67nRJ; Tue, 7 Dec 2021 17:12:39 +0800 (CST) Received: from lhreml724-chm.china.huawei.com (10.201.108.75) by fraeml702-chm.china.huawei.com (10.206.15.51) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2308.20; Tue, 7 Dec 2021 10:14:22 +0100 Received: from [10.47.82.161] (10.47.82.161) by lhreml724-chm.china.huawei.com (10.201.108.75) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2308.20; Tue, 7 Dec 2021 09:14:21 +0000 Subject: Re: [PATCH v2 3/3] perf/smmuv3: Synthesize IIDR from CoreSight ID registers To: Jean-Philippe Brucker , CC: , , , , , , , References: <20211117144844.241072-1-jean-philippe@linaro.org> <20211117144844.241072-4-jean-philippe@linaro.org> From: John Garry Message-ID: Date: Tue, 7 Dec 2021 09:14:06 +0000 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:68.0) Gecko/20100101 Thunderbird/68.12.1 MIME-Version: 1.0 In-Reply-To: <20211117144844.241072-4-jean-philippe@linaro.org> Content-Type: text/plain; charset="utf-8"; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit X-Originating-IP: [10.47.82.161] X-ClientProxiedBy: lhreml721-chm.china.huawei.com (10.201.108.72) To lhreml724-chm.china.huawei.com (10.201.108.75) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org On 17/11/2021 14:48, Jean-Philippe Brucker wrote: > From: Robin Murphy > > The SMMU_PMCG_IIDR register was not present in older revisions of the > Arm SMMUv3 spec. On Arm Ltd. implementations, the IIDR value consists of > fields from several PIDR registers, allowing us to present a > standardized identifier to userspace. > So is there some userspace part to go with this now? Thanks, John