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=-2.3 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=no 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 BFA3BC433FF for ; Wed, 7 Aug 2019 08:53:39 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 93898223CB for ; Wed, 7 Aug 2019 08:53:39 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="pTDhwLnZ"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=amdcloud.onmicrosoft.com header.i=@amdcloud.onmicrosoft.com header.b="IbcT7TS8" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 93898223CB Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=amd.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:Content-ID:In-Reply-To: References:Message-ID:Date:Subject:To:From:Reply-To:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=c8A7Mx78mwhQGGkPAVuWpT46xIqrrf93A/cr6Kjq7nk=; b=pTDhwLnZFBrTfg pbgmEq1nSgWqCztsxFqB4+N2LbOXKQRsQ8cSJDmV4u7KlhbELSCvcCGOXKWxJspTHuobEXzaLsUKJ Uzuyv+30ri2ZF7enzrgfzMmjUbVlYLMSJpGbZ/VRd5a0MQ1KXAzxDwmKy+6QfVAy9TgB5ptSE/R4T uKRiYcp+wPSUsVnP+u3JwVCAgC9rMPaFTM4UCv9DjJbeKxh2I/HTUQBokgLxbIYhJA33HHLYzt4Bd /mU4J552Eprhvoz0j4v7AQSA+FbSx9baeemCj6ehHjPPnlxzYrL5TKFQgsIfP/aGRRv3xW+xy+Sl8 pmF9LOVz6GVFxTN2fLKA==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92 #3 (Red Hat Linux)) id 1hvHhM-0001pC-GS; Wed, 07 Aug 2019 08:53:32 +0000 Received: from mail-eopbgr700060.outbound.protection.outlook.com ([40.107.70.60] helo=NAM04-SN1-obe.outbound.protection.outlook.com) by bombadil.infradead.org with esmtps (Exim 4.92 #3 (Red Hat Linux)) id 1hvHhJ-0001ob-G9 for linux-arm-kernel@lists.infradead.org; Wed, 07 Aug 2019 08:53:30 +0000 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=maMXZUbunUkcBh+vdY5Go1bhRtaVpY0vUOGTcU/5+lkFZD9NQCPeEB38piHX2OA/AIy5ZSN5aKIIr5VfZ3TywcvLFsz1XK295O1XkxMZmFDIo4uIOvCmLgP5z0KFDuoYp+HszEklrMdl65JLYXW02nF03NJzGqptWcwmO+bn5tFrbXRcZPYLzTIgTYRilYnnk8ntP7tnF7Vh4/ahlYAwlIdNdp15/NQ8R0XOx/hpsmpUMjUREbVt1cwbh6tfSMwkSdMTfzmidrnx25fO1txCp8X7yid2N961HJ4tkSprFe3vSIcpw2C7LlwaaEN8MQiqneh/7ISAEfcSsfmhv6fJBA== 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=Wyj9TdYcfisZgKkautYT5py2AvvuZ75t9XGu4Rr6Jx0=; b=FpHrhOmuU37uArdbphIxE/LLt6Qd0VyAraUtHLFmSWdwjVDWyewHR1czFERR/u+/WRomiREPq4/5NpZBP+0kZ2o+f6mSC1Wizl9dQyvaQxEl2gMmhVqdDRhQ8+yQVdXFmK7ITGO58ugnnsWc+ntpGtv8ZJlpKGFBe2SbWSQrlsUP7fHcqBXOsoTN4WTv0kyX/Hm+novYOqbqQ/AgUZ5QeODA1iiAbFnqObHHw7yD97zyixmyGKbgywefXH+yJZTmW+RtHdhgiu2rs5mLCxPDKRb8xkMZ3lhnCkkV99QLyAMpco3JukLYH64C7BjSGKJ3yurtmUoxzde1E99stadQXA== 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=selector1-amdcloud-onmicrosoft-com; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=Wyj9TdYcfisZgKkautYT5py2AvvuZ75t9XGu4Rr6Jx0=; b=IbcT7TS8rXCjLa7j0FqcRaXpD7oP/seStjWype0KWt8IJO/Rb75QyBavOKz3eWitpc2XuaC1gN26SbmXIzzG/Zf4goAqmw9MCHog3l6p0hfo5KTq4DUkuwyuVQnuJsF1Nqc6aZl1AXs1+LkdSZIhFagbI+BXhAFuDC5KN9Dptzk= Received: from DM5PR12MB1546.namprd12.prod.outlook.com (10.172.36.23) by DM5PR12MB1371.namprd12.prod.outlook.com (10.168.239.22) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.2136.16; Wed, 7 Aug 2019 08:53:26 +0000 Received: from DM5PR12MB1546.namprd12.prod.outlook.com ([fe80::fc5f:ce01:e8c8:db89]) by DM5PR12MB1546.namprd12.prod.outlook.com ([fe80::fc5f:ce01:e8c8:db89%12]) with mapi id 15.20.2136.018; Wed, 7 Aug 2019 08:53:26 +0000 From: "Koenig, Christian" To: Christoph Hellwig , "Zhou1, Tao" Subject: Re: [PATCH] drm/amdgpu: replace readq/writeq with atomic64 operations Thread-Topic: [PATCH] drm/amdgpu: replace readq/writeq with atomic64 operations Thread-Index: AQHVTMvE140hqrZvSkOTllezqlrDj6bvREIAgAAdQoA= Date: Wed, 7 Aug 2019 08:53:25 +0000 Message-ID: References: <20190807025640.682-1-tao.zhou1@amd.com> <20190807070834.GA24792@infradead.org> In-Reply-To: <20190807070834.GA24792@infradead.org> Accept-Language: de-DE, en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: user-agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.8.0 x-originating-ip: [2a02:908:1252:fb60:be8a:bd56:1f94:86e7] x-clientproxiedby: PR1PR01CA0005.eurprd01.prod.exchangelabs.com (2603:10a6:102::18) To DM5PR12MB1546.namprd12.prod.outlook.com (2603:10b6:4:8::23) authentication-results: spf=none (sender IP is ) smtp.mailfrom=Christian.Koenig@amd.com; x-ms-exchange-messagesentrepresentingtype: 1 x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: d06c977a-1957-440c-4f20-08d71b14b557 x-ms-office365-filtering-ht: Tenant x-microsoft-antispam: BCL:0; PCL:0; RULEID:(2390118)(7020095)(4652040)(8989299)(4534185)(4627221)(201703031133081)(201702281549075)(8990200)(5600148)(711020)(4605104)(1401327)(4618075)(2017052603328)(7193020); SRVR:DM5PR12MB1371; x-ms-traffictypediagnostic: DM5PR12MB1371: x-microsoft-antispam-prvs: x-ms-oob-tlc-oobclassifiers: OLM:1051; x-forefront-prvs: 01221E3973 x-forefront-antispam-report: SFV:NSPM; SFS:(10009020)(4636009)(376002)(39860400002)(346002)(366004)(136003)(396003)(199004)(189003)(31696002)(6506007)(86362001)(2616005)(46003)(25786009)(256004)(8936002)(66446008)(81156014)(66946007)(6512007)(14454004)(99286004)(81166006)(52116002)(64756008)(66556008)(66476007)(76176011)(2906002)(36756003)(31686004)(68736007)(6246003)(102836004)(71190400001)(53936002)(316002)(6486002)(446003)(4744005)(386003)(6116002)(65826007)(110136005)(8676002)(7736002)(11346002)(58126008)(486006)(476003)(229853002)(6636002)(478600001)(64126003)(71200400001)(65956001)(305945005)(6436002)(5660300002)(4326008)(186003)(54906003)(65806001); DIR:OUT; SFP:1101; SCL:1; SRVR:DM5PR12MB1371; H:DM5PR12MB1546.namprd12.prod.outlook.com; FPR:; SPF:None; LANG:en; PTR:InfoNoRecords; A:1; MX:1; received-spf: None (protection.outlook.com: amd.com does not designate permitted sender hosts) x-ms-exchange-senderadcheck: 1 x-microsoft-antispam-message-info: n7BWIbSrYjBs1LHn6hwFPwNaVqrVr1BPcHaYassYQc8VOOHUOk1yBfi/AduD/o6pttJnUYNRJBXL+oc5UKfYcF5sHY83h/5z5uDjv+rwvdkaTXg1PxalKdNZoSe5mfyryPlVtGLGvQKiFZLx57FdCuaAOV5kUJQk0rvDhm/iykPWy6ZcVRytcb/cYJUimNsL1pIcq7H9gCwgr4qwokNkfjUHMJXDwZNmoDS9Dvw4vrjEE4KeBRbHY8PFtC/wucxneQlIs241gGRDvyRUqsLk/0pj4injHdojokGzdKDlHQCiicGDOmiKbyd3qhJuY6sGUtelHIvrfUsXJ7WoqJ6gjCFG0/xre1Z7MgBT8USQvcLAOsVojoir8HM09escAgONuQCxHQwUjc5qerqPkDNRxC6xlzTjaC5NCsoj+Z/QEhQ= Content-ID: MIME-Version: 1.0 X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-Network-Message-Id: d06c977a-1957-440c-4f20-08d71b14b557 X-MS-Exchange-CrossTenant-originalarrivaltime: 07 Aug 2019 08:53:25.7385 (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: ckoenig@amd.com X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM5PR12MB1371 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190807_015329_569224_5427B711 X-CRM114-Status: GOOD ( 10.32 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: "linux-arm-kernel@lists.infradead.org" , "kernel-build-reports@lists.linaro.org" , "amd-gfx@lists.freedesktop.org" , "broonie@kernel.org" , "linux-next@vger.kernel.org" , "Deucher, Alexander" , "akpm@linux-foundation.org" , "Li, Dennis" , "Zhang, Hawking" Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org Am 07.08.19 um 09:08 schrieb Christoph Hellwig: > On Wed, Aug 07, 2019 at 10:56:40AM +0800, Tao Zhou wrote: >> readq/writeq are not supported on all architectures > NAK. You must not use atomic_* on __iomem (MMIO) memory. Well then what's the right thing to do here? Essentially writeq/readq doesn't seems to be available on all architectures either. Regards, Christian. _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel