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=-0.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_PASS,URIBL_BLOCKED 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 96BBFC4321E for ; Fri, 7 Sep 2018 00:40:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 455792083D for ; Fri, 7 Sep 2018 00:40:46 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=microsoft.com header.i=@microsoft.com header.b="R+B9yD3U" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 455792083D Authentication-Results: mail.kernel.org; dmarc=fail (p=reject dis=none) header.from=microsoft.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730610AbeIGFSt (ORCPT ); Fri, 7 Sep 2018 01:18:49 -0400 Received: from mail-bn3nam01on0093.outbound.protection.outlook.com ([104.47.33.93]:60384 "EHLO NAM01-BN3-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1727820AbeIGFSs (ORCPT ); Fri, 7 Sep 2018 01:18:48 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=b0Fizgkrf8guiYw/K2lq5j6Cz9Mfr47WUCBQIAHzBT4=; b=R+B9yD3Utbsfxu5fJpH2O38RogTAo2N1q4Lc/2aAapb6xCPcltYxycD3QB8eqcf1FazW76QDofHKwRDGo8glSrESIcTKm8C+TVGsq2TwFE0zqPGjsO8PWQHc+3jNLTXbpf06sXUkrtOPK2L7d0K0azvsSdrx8pKNOiyEdMdS7AE= Received: from CY4PR21MB0776.namprd21.prod.outlook.com (10.173.192.22) by CY4PR21MB0855.namprd21.prod.outlook.com (10.173.192.144) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.1143.1; Fri, 7 Sep 2018 00:40:01 +0000 Received: from CY4PR21MB0776.namprd21.prod.outlook.com ([fe80::7c3a:eea8:1391:1611]) by CY4PR21MB0776.namprd21.prod.outlook.com ([fe80::7c3a:eea8:1391:1611%7]) with mapi id 15.20.1143.008; Fri, 7 Sep 2018 00:40:01 +0000 From: Sasha Levin To: "stable@vger.kernel.org" , "linux-kernel@vger.kernel.org" CC: Miao Zhong , Will Deacon , Robin Murphy , Sasha Levin Subject: [PATCH AUTOSEL 4.9 02/43] iommu/arm-smmu-v3: sync the OVACKFLG to PRIQ consumer register Thread-Topic: [PATCH AUTOSEL 4.9 02/43] iommu/arm-smmu-v3: sync the OVACKFLG to PRIQ consumer register Thread-Index: AQHURkMT5DZqbKhSZk+1KVRZOHFW8w== Date: Fri, 7 Sep 2018 00:38:20 +0000 Message-ID: <20180907003816.57852-2-alexander.levin@microsoft.com> References: <20180907003816.57852-1-alexander.levin@microsoft.com> In-Reply-To: <20180907003816.57852-1-alexander.levin@microsoft.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [52.168.54.252] x-ms-publictraffictype: Email x-microsoft-exchange-diagnostics: 1;CY4PR21MB0855;6:2/rLpx6xtMNriOs9ZJKgZvkxR903xrG0RdJ3OusxyDE3Pueky6kaKUK1Og1Jnq0v6SIBpDIh5fp9zu87qKwGvsX93t7K0XIlJdJNh4seL9t8OfSWM5hVig07yaDI2A1mq8Hn7W7pw+IiX0uO2O1FqEcvlvoeX726VMNRKUJtPyRiXAYC79nfcwF7ljPDHPtJztfOaW65//ihXHPJtTJxGuOdM824712NcoN7vYHviJ2fXFGh+d9DaguPbCyR+BfHtm0q/fob41Md1ADpop6mOjN3lBBfyIKYmjLPXRr+kw1/JDxb0RMcq82DLxSJ6/Q1Q9kbAnWM9qDwUF0YIxcZ8zXSUHQ2t+Oa5bMMColU8HIcc9DLee/i1/yKAcss3JhrFu1+yan7C6gP5JultAPZUwCobPa6Kr3D6V6LxA97LdYM0Pc1Dv9FreHIDHPOqiDXpX/3Pcj9FCen9udfoFLWDw==;5:+G2bm8QCw/gpHplYJdEdQLt+vI2eFWmngi+YmenFeh9vwuEL59aQMOARwlkHB7NsJ8SUpVxXXd6u4VGy/eUYPbptYpRlZGUicPG13jd94kOeLt/GIIxuPPO+vM7u6chAvKYjDd4UXGkTBH12oeUy7YXR0jTwbb3OvlcANGqAhEU=;7:YMF480we8qfU9aRtGWTY00tsSt/u2rVo4tOKqchssfhw3xavdH7YI6jYvaWzKH0SBs88g10F3T6oThuL+fqXottBn/p5fowupXeE0ba4HE4Zk9+a+l9n+g/sD0iysrmVd6bEkouCcALRuSk5Y40Papu7c+0JqfYCGQhjcAJXrnByXP/NjA4BYmxqCPYZiypLDhVJ/DRi9Ty4ZOsum6IthRnUJljDcN/Jh76fTK9aa59W7JfCTzn9AH8O2NuhnsD3 x-ms-office365-filtering-correlation-id: c5fffc3c-05bf-481f-025f-08d6145a720e x-ms-office365-filtering-ht: Tenant x-microsoft-antispam: BCL:0;PCL:0;RULEID:(7020095)(4652040)(4534165)(4627221)(201703031133081)(201702281549075)(5600074)(711020)(4618075)(2017052603328)(7193020);SRVR:CY4PR21MB0855; x-ms-traffictypediagnostic: CY4PR21MB0855: authentication-results: spf=none (sender IP is ) smtp.mailfrom=Alexander.Levin@microsoft.com; x-microsoft-antispam-prvs: x-exchange-antispam-report-test: UriScan:(28532068793085)(180628864354917)(89211679590171); x-ms-exchange-senderadcheck: 1 x-exchange-antispam-report-cfa-test: BCL:0;PCL:0;RULEID:(8211001083)(6040522)(2401047)(8121501046)(5005006)(3231344)(944501410)(52105095)(2018427008)(93006095)(93001095)(3002001)(10201501046)(6055026)(149027)(150027)(6041310)(20161123564045)(20161123560045)(20161123562045)(20161123558120)(201703131423095)(201702281528075)(20161123555045)(201703061421075)(201703061406153)(201708071742011)(7699049)(76991033);SRVR:CY4PR21MB0855;BCL:0;PCL:0;RULEID:;SRVR:CY4PR21MB0855; x-forefront-prvs: 07880C4932 x-forefront-antispam-report: SFV:NSPM;SFS:(10019020)(346002)(136003)(396003)(366004)(376002)(39860400002)(189003)(199004)(53936002)(316002)(97736004)(2900100001)(86612001)(25786009)(86362001)(2906002)(6512007)(54906003)(107886003)(68736007)(110136005)(4326008)(81156014)(10290500003)(14454004)(8936002)(66066001)(81166006)(8676002)(3846002)(6116002)(478600001)(72206003)(7736002)(305945005)(1076002)(106356001)(105586002)(6506007)(76176011)(10090500001)(6486002)(99286004)(256004)(36756003)(2501003)(26005)(186003)(6666003)(5250100002)(14444005)(6436002)(5660300001)(102836004)(217873002)(476003)(2616005)(486006)(22452003)(11346002)(446003);DIR:OUT;SFP:1102;SCL:1;SRVR:CY4PR21MB0855;H:CY4PR21MB0776.namprd21.prod.outlook.com;FPR:;SPF:None;LANG:en;PTR:InfoNoRecords;MX:1;A:1; received-spf: None (protection.outlook.com: microsoft.com does not designate permitted sender hosts) x-microsoft-antispam-message-info: TfKKbytD4VDGD8sV6Vob/3mHk0dvovjbvXvCxMB5HmZQ/1Z02fQzT2MgFRwcDKXcRsEgIrKwp1kxD9kCC3tEhWnclwsKR3mlRpszrDLbunMOIDDMJfrQrirzOyAD3KFm7chkTTzU11PV6nSRzVpIsBbo/lyu2sdHqXJffT5IWZRhkkLcoVVCn2w7bxpQOql3P5oeK6XtFBzPaN7GNAQBVXDtpBdhJSSUMXTUOcRN/vyDv6CZoo7J+YqIsa+bGJPF2+g3Hz2df685oge3eIx1q9Pv7MBsoi0P20ODd972UxBgvjywF8NhygczfGt6+9uNX3CsHvtHCQ7/wR+BsSpnQzMKiL1IfBEFlKR7YH815ik= spamdiagnosticoutput: 1:99 spamdiagnosticmetadata: NSPM Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: microsoft.com X-MS-Exchange-CrossTenant-Network-Message-Id: c5fffc3c-05bf-481f-025f-08d6145a720e X-MS-Exchange-CrossTenant-originalarrivaltime: 07 Sep 2018 00:38:20.4981 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 72f988bf-86f1-41af-91ab-2d7cd011db47 X-MS-Exchange-Transport-CrossTenantHeadersStamped: CY4PR21MB0855 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Miao Zhong [ Upstream commit 0d535967ac658966c6ade8f82b5799092f7d5441 ] When PRI queue occurs overflow, driver should update the OVACKFLG to the PRIQ consumer register, otherwise subsequent PRI requests will not be processed. Cc: Will Deacon Cc: Robin Murphy Signed-off-by: Miao Zhong Signed-off-by: Will Deacon Signed-off-by: Sasha Levin --- drivers/iommu/arm-smmu-v3.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/iommu/arm-smmu-v3.c b/drivers/iommu/arm-smmu-v3.c index 7f294f785ce6..ff4be1174ff0 100644 --- a/drivers/iommu/arm-smmu-v3.c +++ b/drivers/iommu/arm-smmu-v3.c @@ -1233,6 +1233,7 @@ static irqreturn_t arm_smmu_priq_thread(int irq, void= *dev) =20 /* Sync our overflow flag, as we believe we're up to speed */ q->cons =3D Q_OVF(q, q->prod) | Q_WRP(q, q->cons) | Q_IDX(q, q->cons); + writel(q->cons, q->cons_reg); return IRQ_HANDLED; } =20 --=20 2.17.1