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 X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id D4D49CA9EA0 for ; Fri, 18 Oct 2019 15:31:40 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A158721852 for ; Fri, 18 Oct 2019 15:31:40 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=amdcloud.onmicrosoft.com header.i=@amdcloud.onmicrosoft.com header.b="wijl5GYz" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2410553AbfJRPbj (ORCPT ); Fri, 18 Oct 2019 11:31:39 -0400 Received: from mail-eopbgr720052.outbound.protection.outlook.com ([40.107.72.52]:48496 "EHLO NAM05-CO1-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S2501906AbfJRPbh (ORCPT ); Fri, 18 Oct 2019 11:31:37 -0400 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=Mapa8PI2QyeSUY0KQON7HmLzYgWj+y18HnKp1DsxrXFO32EOUent9xe2+XVIkw8C5+HFRJXK6FgeEGseqHhMkK47onDs+rJBcJZgh3+MFxJTOAkQQIwazprZcqkD1WHAcu1efDkORkMnaRu2r1HLTWocRrW8otdhQXZl81vJph3J8zp+WDa834RAsG8f85XurTueIbIgroF3iUnhuVwLu/LL4Q85xr8rOwkoJ6/E6bcPzpJvF+ozip3ZPfjpIJHYcml+m7KkJxgH5l9oN11lwsivGrxAujsOkKvu/Qzd8M/cceuGm8E+sEutjV8wf1E44KdTANmzJBmVRWAGNoCtTg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=KC8zJqJtdxmy/HxrTxNIEVgY48Vc+1j1tgy8Abxr7mM=; b=VSPwO+Z2Ql6FRhNM3l65lzr2Eequ4zCs0cyW4Fca34CnfwtNFU77yR3zesNoduv4W8W7EA4QLNJF8V3QLW/yRDV71uVo9L1eeww89rsMgUeBYnm2iIrbblqduI4f/UsldU6dp9Ln8mg8rnD0q/wVn1RRESI9NTk3bz9Ra75RAkUnraHN+XrTwGQI+ZDkwwhYK3QJFrygXVwcFlCVRU41svfsxxzQQki713FXRxExvCpIJiE+Vqx/iBTurO+F8w7YuqzjqOP8qfCVa1y569/t3WSu4H3ZiC3Zdq45Pk0qeR8GJgqhQlR3Su/kpl58r9dmGclda+wINM/WVc2u/seNvQ== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=amd.com; dmarc=pass action=none header.from=amd.com; dkim=pass header.d=amd.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amdcloud.onmicrosoft.com; s=selector2-amdcloud-onmicrosoft-com; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=KC8zJqJtdxmy/HxrTxNIEVgY48Vc+1j1tgy8Abxr7mM=; b=wijl5GYz8QrLqyatCr235iBzgJUH8yHk/APDIiNlrS/hEmZF2UYZ49oIxi0mFvvJqUjnHXE49q5vEK/+AbKs2STUcnqK1NQ5fXS6sj+5bn6ZCMHWMfGA4cDiQKTHO4jeeUEcvJL6Q9ougqa46DHlgx03o4eb5yoIEJrfq0X8/k8= Received: from SN6PR12MB2639.namprd12.prod.outlook.com (52.135.103.16) by SN6PR12MB2608.namprd12.prod.outlook.com (52.135.102.161) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.2347.21; Fri, 18 Oct 2019 15:31:28 +0000 Received: from SN6PR12MB2639.namprd12.prod.outlook.com ([fe80::ac86:15de:e8d6:61c8]) by SN6PR12MB2639.namprd12.prod.outlook.com ([fe80::ac86:15de:e8d6:61c8%7]) with mapi id 15.20.2367.019; Fri, 18 Oct 2019 15:31:28 +0000 From: "Ghannam, Yazen" To: "linux-edac@vger.kernel.org" CC: "Ghannam, Yazen" , "linux-kernel@vger.kernel.org" , "bp@alien8.de" Subject: [PATCH 5/6] EDAC/amd64: Check for memory before fully initializing an instance Thread-Topic: [PATCH 5/6] EDAC/amd64: Check for memory before fully initializing an instance Thread-Index: AQHVhckb2h8vvebLQEi9ylCDe5/coQ== Date: Fri, 18 Oct 2019 15:31:27 +0000 Message-ID: <20191018153114.39378-6-Yazen.Ghannam@amd.com> References: <20191018153114.39378-1-Yazen.Ghannam@amd.com> In-Reply-To: <20191018153114.39378-1-Yazen.Ghannam@amd.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-clientproxiedby: SN1PR12CA0046.namprd12.prod.outlook.com (2603:10b6:802:20::17) To SN6PR12MB2639.namprd12.prod.outlook.com (2603:10b6:805:6f::16) authentication-results: spf=none (sender IP is ) smtp.mailfrom=Yazen.Ghannam@amd.com; x-ms-exchange-messagesentrepresentingtype: 1 x-mailer: git-send-email 2.17.1 x-originating-ip: [165.204.78.2] x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: e5b276ba-5d6f-4578-d788-08d753e03e2a x-ms-office365-filtering-ht: Tenant x-ms-traffictypediagnostic: SN6PR12MB2608: x-ms-exchange-purlcount: 1 x-ld-processed: 3dd8961f-e488-4e60-8e11-a82d994e183d,ExtAddr x-ms-exchange-transport-forked: True x-microsoft-antispam-prvs: x-ms-oob-tlc-oobclassifiers: OLM:8882; x-forefront-prvs: 01949FE337 x-forefront-antispam-report: SFV:NSPM;SFS:(10009020)(4636009)(39860400002)(366004)(376002)(346002)(396003)(136003)(189003)(199004)(6506007)(386003)(186003)(2906002)(6512007)(6436002)(6486002)(2351001)(6306002)(3846002)(478600001)(6116002)(5640700003)(7736002)(305945005)(26005)(102836004)(966005)(446003)(76176011)(71190400001)(71200400001)(66446008)(64756008)(66556008)(66476007)(66946007)(11346002)(476003)(256004)(14444005)(2616005)(52116002)(50226002)(86362001)(6916009)(99286004)(8936002)(81156014)(25786009)(81166006)(486006)(8676002)(2501003)(36756003)(1076003)(5660300002)(4326008)(14454004)(316002)(66066001)(54906003);DIR:OUT;SFP:1101;SCL:1;SRVR:SN6PR12MB2608;H:SN6PR12MB2639.namprd12.prod.outlook.com;FPR:;SPF:None;LANG:en;PTR:InfoNoRecords;MX:1;A:1; received-spf: None (protection.outlook.com: amd.com does not designate permitted sender hosts) x-ms-exchange-senderadcheck: 1 x-microsoft-antispam: BCL:0; x-microsoft-antispam-message-info: mxzz45lXjBfdsfBs/3p95V1h5ag1c+tF1v/Nv2yyOJP/FbEXb3Ml/xzNCuTYA7AsOkyoEo2pJFigp1a+TLUzB+rpjicDqDuhpV+TuyHEwbMojth2nf86lrEkI1oLudseNYB+K/SiEujZ78q91PM7f3IV+9x74GbPXRIm80hnfkfWKAl5W7zRuozCN+mJBv/kLY4udLUcOqiEKSZYpHvxk8WbSsRie/8Pqlt9Q4iHXdj9t2O9zkcYciGV7UHRQQ6mdDZ/TKYLOmDuTbymyUkjSNfdUgVYNxKaDVsbEokB2212qMmIATeM7aAiGa62YKqzsHllC0+8Zi3F38fHBunUIs29W92TCB+qppXjpaBvr4YD7ARknonupKvaU4FNkaLeYvvygrE6R7n5YNkLrWFP2XjGGtC1hOTc3/kzIcel2+8bLD5mdMy1udza8RniVPRTs1B12RZF2q4TqISZeEiGSA== Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-Network-Message-Id: e5b276ba-5d6f-4578-d788-08d753e03e2a X-MS-Exchange-CrossTenant-originalarrivaltime: 18 Oct 2019 15:31:27.9347 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: abyQS1ckWwzBYaAXq52dLlTYivEX3bOz8Ahchx+qA/C+iE3ALWiD0E/roZD5fQHNC+uKWWdwUbyLUHQ+WJGaWA== X-MS-Exchange-Transport-CrossTenantHeadersStamped: SN6PR12MB2608 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Yazen Ghannam Return early before checking for ECC if the node does not have any populated memory. Free any cached hardware data before returning. Also, return 0 in this case since this is not a failure. Other nodes may have memory and the module should attempt to load an instance for them. Move printing of hardware information to after the instance is initialized, so that the information is only printed for nodes with memory. Signed-off-by: Yazen Ghannam --- Link: https://lkml.kernel.org/r/20190821235938.118710-11-Yazen.Ghannam@amd.com rfc -> v1: * Change message severity to "info". * Nodes without memory is a valid configuration. The user doesn't need to be warned. * Drop "DRAM ECC disabled" from message. * The message is given when no memory was detected on a node. * The state of DRAM ECC is not checked here. drivers/edac/amd64_edac.c | 23 +++++++++++++++++++++-- 1 file changed, 21 insertions(+), 2 deletions(-) diff --git a/drivers/edac/amd64_edac.c b/drivers/edac/amd64_edac.c index feb68c0a3217..2a0a8be8f767 100644 --- a/drivers/edac/amd64_edac.c +++ b/drivers/edac/amd64_edac.c @@ -2848,8 +2848,6 @@ static void read_mc_regs(struct amd64_pvt *pvt) edac_dbg(1, " DIMM type: %s\n", edac_mem_types[pvt->dram_type]); =20 determine_ecc_sym_sz(pvt); - - dump_misc_regs(pvt); } =20 /* @@ -3501,6 +3499,19 @@ static int init_one_instance(struct amd64_pvt *pvt) return ret; } =20 +static bool instance_has_memory(struct amd64_pvt *pvt) +{ + bool cs_enabled =3D false; + int cs =3D 0, dct =3D 0; + + for (dct =3D 0; dct < fam_type->max_num_controllers; dct++) { + for_each_chip_select(cs, dct, pvt) + cs_enabled |=3D csrow_enabled(cs, dct, pvt); + } + + return cs_enabled; +} + static int probe_one_instance(unsigned int nid) { struct pci_dev *F3 =3D node_to_amd_nb(nid)->misc; @@ -3530,6 +3541,12 @@ static int probe_one_instance(unsigned int nid) if (ret < 0) goto err_enable; =20 + ret =3D 0; + if (!instance_has_memory(pvt)) { + amd64_info("Node %d: No DIMMs detected.\n", nid); + goto err_enable; + } + if (!ecc_enabled(pvt)) { ret =3D 0; =20 @@ -3556,6 +3573,8 @@ static int probe_one_instance(unsigned int nid) goto err_enable; } =20 + dump_misc_regs(pvt); + return ret; =20 err_enable: --=20 2.17.1