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 kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id C481BC05027 for ; Fri, 10 Feb 2023 17:34:59 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 5CC216B0168; Fri, 10 Feb 2023 12:34:59 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 57C076B0169; Fri, 10 Feb 2023 12:34:59 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 4437B6B016A; Fri, 10 Feb 2023 12:34:59 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0011.hostedemail.com [216.40.44.11]) by kanga.kvack.org (Postfix) with ESMTP id 32AED6B0168 for ; Fri, 10 Feb 2023 12:34:59 -0500 (EST) Received: from smtpin14.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay05.hostedemail.com (Postfix) with ESMTP id 0A6F041179 for ; Fri, 10 Feb 2023 17:34:59 +0000 (UTC) X-FDA: 80452082718.14.57939D5 Received: from frasgout.his.huawei.com (frasgout.his.huawei.com [185.176.79.56]) by imf20.hostedemail.com (Postfix) with ESMTP id 1FED71C0008 for ; Fri, 10 Feb 2023 17:34:56 +0000 (UTC) Authentication-Results: imf20.hostedemail.com; dkim=none; spf=pass (imf20.hostedemail.com: domain of jonathan.cameron@huawei.com designates 185.176.79.56 as permitted sender) smtp.mailfrom=jonathan.cameron@huawei.com; dmarc=pass (policy=quarantine) header.from=huawei.com ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1676050497; a=rsa-sha256; cv=none; b=sllKKrYbg9vAtDJcCFplGMK95wvuidCzDd8WYVmscSR3lX5FVsOMe7VhVa4CxCqBDDJjEN 30QND4e/wwNwJU9OHPlN6QznnV7kzul0j7vr0F0P404JfFul1H08gzB3jVsMJ4aKsHm77a r2eFxWGGqR4Z8git0enCMfGdCH6hTRM= ARC-Authentication-Results: i=1; imf20.hostedemail.com; dkim=none; spf=pass (imf20.hostedemail.com: domain of jonathan.cameron@huawei.com designates 185.176.79.56 as permitted sender) smtp.mailfrom=jonathan.cameron@huawei.com; dmarc=pass (policy=quarantine) header.from=huawei.com ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1676050497; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=OLTBlK8lrqqABFZqkdRWbwVPwLeAbMcqRi0Qio81UfE=; b=gWkt5OqGFb6+yhOSJlQNrpDlB0iULz6GU8hIODQ+cDAXnT9nj0Vry9X13f128PbQ3WB0vQ KHtb1qgIAMMaWxjR58bu/w2WfokZsgyt+zx+ki8SLZj8+OOfpmTvNVztXmlHooJRw4MriB 7JdSJ7gEqIIwJxtIl0nNs2/h5ASFckw= Received: from lhrpeml500005.china.huawei.com (unknown [172.18.147.226]) by frasgout.his.huawei.com (SkyGuard) with ESMTP id 4PD1361q8yz67Qtq; Sat, 11 Feb 2023 01:30:26 +0800 (CST) Received: from localhost (10.81.210.211) by lhrpeml500005.china.huawei.com (7.191.163.240) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.17; Fri, 10 Feb 2023 17:34:54 +0000 Date: Fri, 10 Feb 2023 17:34:53 +0000 From: Jonathan Cameron To: Dan Williams CC: , Vishal Verma , "Fan Ni" , , , Subject: Re: [PATCH v2 09/20] cxl/region: Move region-position validation to a helper Message-ID: <20230210173453.00002fc5@Huawei.com> In-Reply-To: <167601997584.1924368.4615769326126138969.stgit@dwillia2-xfh.jf.intel.com> References: <167601992097.1924368.18291887895351917895.stgit@dwillia2-xfh.jf.intel.com> <167601997584.1924368.4615769326126138969.stgit@dwillia2-xfh.jf.intel.com> Organization: Huawei Technologies Research and Development (UK) Ltd. X-Mailer: Claws Mail 4.1.0 (GTK 3.24.33; x86_64-w64-mingw32) MIME-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit X-Originating-IP: [10.81.210.211] X-ClientProxiedBy: lhrpeml500004.china.huawei.com (7.191.163.9) To lhrpeml500005.china.huawei.com (7.191.163.240) X-CFilter-Loop: Reflected X-Rspam-User: X-Rspamd-Queue-Id: 1FED71C0008 X-Rspamd-Server: rspam01 X-Stat-Signature: a8ui4tjiwjba89foa6o3dp73bmsop1ko X-HE-Tag: 1676050496-586524 X-HE-Meta: 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 2ReXyu2f CNW+eHi7f/RzE+9OR0ZgFHKQjaZn5+bC4aJwBRSnSuMJ5wyqju0ivVFIYHPu4i1pGKI+QJkfTeoGpTb+JVt/wqgjrHesiRGoBnDywxns2aOz74mQNHBp5Z2DJVwBvuPyFSAqfgQlP9BRhXDJzStvkKGtCwcKjGrk2q+sBm7FKCb/xV8X+T4ww8Hu6Cywm7Gb8g4al99BquIPBtSZ+nxTSA8nfXbE9C53D3VccQ1nGsIkAqXnV21Wq9KF3R9XM+1KsQ3onwI8xODd+bYU8dkz2eS7L4Z6s5QLSXuxYgFBW/ehhMqj2ol8b7yYa520Ni8/iwCmiAYIa55A3U0YZAvCp2I8lgo5C9buy8pMK X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Fri, 10 Feb 2023 01:06:15 -0800 Dan Williams wrote: > In preparation for region autodiscovery, that needs all devices > discovered before their relative position in the region can be > determined, consolidate all position dependent validation in a helper. > > Recall that in the on-demand region creation flow the end-user picks the > position of a given endpoint decoder in a region. In the autodiscovery > case the position of an endpoint decoder can only be determined after > all other endpoint decoders that claim to decode the region's address > range have been enumerated and attached. So, in the autodiscovery case > endpoint decoders may be attached before their relative position is > known. Once all decoders arrive, then positions can be determined and > validated with cxl_region_validate_position() the same as user initiated > on-demand creation. > > Reviewed-by: Vishal Verma > Tested-by: Fan Ni > Link: https://lore.kernel.org/r/167564538779.847146.8356062886811511706.stgit@dwillia2-xfh.jf.intel.com > Signed-off-by: Dan Williams Reviewed-by: Jonathan Cameron