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=-2.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, PDS_BAD_THREAD_QP_64,SPF_HELO_NONE,SPF_PASS,UNPARSEABLE_RELAY,URIBL_BLOCKED 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 F22C0C433E0 for ; Tue, 16 Mar 2021 17:04:02 +0000 (UTC) Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) (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 9F1406510F for ; Tue, 16 Mar 2021 17:04:02 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 9F1406510F Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=arm.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=xen-devel-bounces@lists.xenproject.org Received: from list by lists.xenproject.org with outflank-mailman.98412.186688 (Exim 4.92) (envelope-from ) id 1lMD6a-0007yt-7B; Tue, 16 Mar 2021 17:03:40 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version Received: by outflank-mailman (output) from mailman id 98412.186688; Tue, 16 Mar 2021 17:03:40 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1lMD6a-0007ym-3z; Tue, 16 Mar 2021 17:03:40 +0000 Received: by outflank-mailman (input) for mailman id 98412; Tue, 16 Mar 2021 17:03:39 +0000 Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1lMD6Y-0007yh-Tq for xen-devel@lists.xenproject.org; Tue, 16 Mar 2021 17:03:39 +0000 Received: from EUR05-AM6-obe.outbound.protection.outlook.com (unknown [40.107.22.85]) by us1-rack-iad1.inumbo.com (Halon) with ESMTPS id 972cda3b-12cc-488e-8832-eb44080b4806; Tue, 16 Mar 2021 17:03:35 +0000 (UTC) Received: from AM6P195CA0107.EURP195.PROD.OUTLOOK.COM (2603:10a6:209:86::48) by HE1PR08MB2858.eurprd08.prod.outlook.com (2603:10a6:7:33::13) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3912.26; Tue, 16 Mar 2021 17:03:14 +0000 Received: from AM5EUR03FT008.eop-EUR03.prod.protection.outlook.com (2603:10a6:209:86:cafe::4b) by AM6P195CA0107.outlook.office365.com (2603:10a6:209:86::48) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3933.31 via Frontend Transport; Tue, 16 Mar 2021 17:03:13 +0000 Received: from 64aa7808-outbound-1.mta.getcheckrecipient.com (63.35.35.123) by AM5EUR03FT008.mail.protection.outlook.com (10.152.16.123) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3933.31 via Frontend Transport; Tue, 16 Mar 2021 17:03:13 +0000 Received: ("Tessian outbound eae0c21066a4:v87"); Tue, 16 Mar 2021 17:03:13 +0000 Received: from 04a2200e7df6.1 by 64aa7808-outbound-1.mta.getcheckrecipient.com id 52AFEE51-D55E-4542-926D-DC5F52EC2179.1; Tue, 16 Mar 2021 17:03:06 +0000 Received: from EUR01-VE1-obe.outbound.protection.outlook.com by 64aa7808-outbound-1.mta.getcheckrecipient.com with ESMTPS id 04a2200e7df6.1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384); Tue, 16 Mar 2021 17:03:06 +0000 Received: from DB7PR08MB3500.eurprd08.prod.outlook.com (2603:10a6:10:49::10) by DB6PR0801MB1991.eurprd08.prod.outlook.com (2603:10a6:4:71::23) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3933.32; Tue, 16 Mar 2021 17:03:00 +0000 Received: from DB7PR08MB3500.eurprd08.prod.outlook.com ([fe80::5959:35df:3647:b78d]) by DB7PR08MB3500.eurprd08.prod.outlook.com ([fe80::5959:35df:3647:b78d%7]) with mapi id 15.20.3933.032; Tue, 16 Mar 2021 17:03:00 +0000 X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" X-Inumbo-ID: 972cda3b-12cc-488e-8832-eb44080b4806 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=armh.onmicrosoft.com; s=selector2-armh-onmicrosoft-com; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=XpdsNT/0W2Q+Lc807unc1Uhwzf7v4rCqEvbSwrwDcTA=; b=LtqVVQuF10loyTlONNbdEwyTZ4Sved+k3yBV59IxZT7ZBkQyuk6Cc9Um0iDR8qnKrTll/iqzCeJj6pOodV+IQeH5lKpPcJitS21F8Cw5BcgxeFhskKGbsUhmrFynaeVTw989zWcInlJqbvf8YPltc9mbhwKBR5z876QgquBqwH8= X-MS-Exchange-Authentication-Results: spf=pass (sender IP is 63.35.35.123) smtp.mailfrom=arm.com; lists.xenproject.org; dkim=pass (signature was verified) header.d=armh.onmicrosoft.com;lists.xenproject.org; dmarc=pass action=none header.from=arm.com; Received-SPF: Pass (protection.outlook.com: domain of arm.com designates 63.35.35.123 as permitted sender) receiver=protection.outlook.com; client-ip=63.35.35.123; helo=64aa7808-outbound-1.mta.getcheckrecipient.com; X-CheckRecipientChecked: true X-CR-MTA-CID: 80b46cef7a0eacaf X-CR-MTA-TID: 64aa7808 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=ioPX2LlDtrY88Ht/OLSsAz8hRW8AIv4IxPCFTT8SejB3BfUNrUftKQhgWQ7wYgLX0x8gFr6tpnGZUXYLL/YRV+aBYCTyW6GLGMC8C10mkJLiIEUf/A96odzs63DECXndupGG6oSbg5ivTaMGtvFitWyMMzxm1TybFAsIDnL59XYZBeFPupwqyebR1cbw6hVSPyec23uqgs8MJTZnStTzLzSPmuNdecgMGwzcvNUQsAgndJfRsyT6dbwgUSOcioTKBQeyOuTd9ebEh3w9AC5b5q/Yt6u7/yg+viPLngFz0UX4wTiFrcuZq6fG0+9xWLAnNikVzDMYQaZkSB/Mabt1cw== 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=XpdsNT/0W2Q+Lc807unc1Uhwzf7v4rCqEvbSwrwDcTA=; b=VSoVOJJrph1vVB8gaJ225dHGev5FUkjDbsxpXShtNF14fLSgkoVyRbkN77rRrbPwAkJDcelRJFUMT274S8ci90GoYAyf2CDcO1ve3VqjE5B1Z8yGSgncx89/vikgXG/xbZBiBU/XmjT4Mn6wfYIINd0I2Y3/WYsYWeX0Dzu7HnuvordbfdDTPMcVGxs1u21CLKmZP/zXbooTvJa7IExNK+9DFA8Pee2vN3xxN2Tb0mWMlNN9HwvFG5tQ9wTx/DVY+PqRl/5GLXbvMAJS+JyZ2hge7+txN8ns+5Eu32bSuq25D23s4p8rParBkglxt12v7lOIfWfTCM0wH8Yi2SJYDg== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=arm.com; dmarc=pass action=none header.from=arm.com; dkim=pass header.d=arm.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=armh.onmicrosoft.com; s=selector2-armh-onmicrosoft-com; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=XpdsNT/0W2Q+Lc807unc1Uhwzf7v4rCqEvbSwrwDcTA=; b=LtqVVQuF10loyTlONNbdEwyTZ4Sved+k3yBV59IxZT7ZBkQyuk6Cc9Um0iDR8qnKrTll/iqzCeJj6pOodV+IQeH5lKpPcJitS21F8Cw5BcgxeFhskKGbsUhmrFynaeVTw989zWcInlJqbvf8YPltc9mbhwKBR5z876QgquBqwH8= From: Rahul Singh To: Julien Grall CC: xen-devel , Bertrand Marquis , Stefano Stabellini , Volodymyr Babchuk Subject: Re: [PATCH 1/5] xen/arm: smmuv1: Handle stream IDs more dynamically Thread-Topic: [PATCH 1/5] xen/arm: smmuv1: Handle stream IDs more dynamically Thread-Index: AQHXFRDxe8GGVnZwKkOnqqCxaz3gPqqGxKGAgAAdrQA= Date: Tue, 16 Mar 2021 17:03:00 +0000 Message-ID: <33CC3689-401C-49DC-9F62-2A30AEEA4F46@arm.com> References: <7775719c50c56b801e69d952e4ce255b8da1481c.1615312254.git.rahul.singh@arm.com> <0ff580cf-0e06-ae17-32c9-bf8dce26aead@xen.org> In-Reply-To: <0ff580cf-0e06-ae17-32c9-bf8dce26aead@xen.org> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: Authentication-Results-Original: xen.org; dkim=none (message not signed) header.d=none;xen.org; dmarc=none action=none header.from=arm.com; x-originating-ip: [80.1.41.211] x-ms-publictraffictype: Email X-MS-Office365-Filtering-HT: Tenant X-MS-Office365-Filtering-Correlation-Id: beb36ead-ac2a-445c-9f33-08d8e89d629a x-ms-traffictypediagnostic: DB6PR0801MB1991:|HE1PR08MB2858: x-ms-exchange-transport-forked: True X-Microsoft-Antispam-PRVS: x-checkrecipientrouted: true nodisclaimer: true x-ms-oob-tlc-oobclassifiers: OLM:989;OLM:989; X-MS-Exchange-SenderADCheck: 1 X-Microsoft-Antispam-Untrusted: BCL:0; X-Microsoft-Antispam-Message-Info-Original: 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 X-Forefront-Antispam-Report-Untrusted: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:DB7PR08MB3500.eurprd08.prod.outlook.com;PTR:;CAT:NONE;SFS:(4636009)(39860400002)(346002)(136003)(396003)(366004)(376002)(86362001)(2906002)(83380400001)(66446008)(64756008)(6486002)(316002)(4326008)(8936002)(66556008)(66476007)(53546011)(54906003)(8676002)(36756003)(6512007)(6916009)(2616005)(33656002)(26005)(76116006)(71200400001)(66946007)(478600001)(186003)(5660300002)(91956017)(6506007)(45980500001);DIR:OUT;SFP:1101; x-ms-exchange-antispam-messagedata: =?us-ascii?Q?cr8cbBRw23MXbVSZPfUnmE00t4Mc/tMKGMoc8eKSNgBZGXUSuc8IrGUd+ioJ?= =?us-ascii?Q?24l+fKi//SGLVf096KKTyi0FplTPYw3zynu+C6ck9PAbnA3W8X3qrnpG5ShT?= =?us-ascii?Q?i/XZ+Ft0wrs4RSA3uqbgbvBZaUzivUCIxQfuSFuMbSf01EaQwcmW3puR5QJe?= =?us-ascii?Q?+Xy5pXOLFtP5Pl5VbcRDZnVnbHy4Y5CCsCOVZ+bZ86qKWOtzf1jMI5E5iXTO?= =?us-ascii?Q?8Ca7LlxaY2RCrowpTexdzQyLxNVPIsgdqMhMokVWiz1pvj8+HvYL0JumjcZk?= =?us-ascii?Q?DP3GOj4mY3oDI9ByC5MoczTAFdq8M7/fWG5pvUc6CoEyquZSeALF8it+xQp/?= =?us-ascii?Q?qC4mjUkJNIins5IMyuNR35RWWvScrqTf1k8syNP5RipwXfVc0q4HGnezkZ/g?= =?us-ascii?Q?AlCN8lvNSMzw9zqVnJhj2L13XvTIj1htVMzxorRXIDD5iIvoEBrTIGzixiOZ?= =?us-ascii?Q?CVjjUndDk9CeuWASjrlC8/eEKkDWBLiVhzUx7qEXgPNBRd8ALRSpHiRM+XJV?= =?us-ascii?Q?vU0wLa4ORf4siqLW9NPvdsDctlo+wup+ctC0rpAVD1oIofOwhVDGMTenLG81?= =?us-ascii?Q?TNH3ZE7gCCClgRFNgdc1854UJ5NtFYyk7YkMAvUczvREgpF3RazHkLj4H3yA?= =?us-ascii?Q?FFFJaHQnNDxss/mii5ehKj62JI+poe1geyXjA68LGt6tkl5ncPqWu0Wxeuhm?= =?us-ascii?Q?Nt/EhSHcxv++CVVs9RQYhmHTf10Sm617NQenREVV/RY1SLQyOw0sVuoQoW3T?= =?us-ascii?Q?slsesaTOzOqRETK0T3YJj8mmbEV/T1h3hxULKcq2USN5kBYzgacbpUHRs1DP?= =?us-ascii?Q?oXZBL0e7TbLig9smc/GosnJTCspXIyHg9FQoU+/+/Wos9opAZNWfjPH+tiNP?= =?us-ascii?Q?IsFyyIj0KEUwg4dOWRdcQXcXSHaGD9rVseOu7pcRi5dw9BI/eN6KZyczTa7o?= =?us-ascii?Q?M1r+Oy0Vf6QlJYp5vrmBl+PzOa60tVivxB1YJuhuuSf8G8/U5B2XjmnK7W8/?= =?us-ascii?Q?O9EvGr+5FakA28x6/j76W9D3sXt5V1D9gKFsTSDcW0NSzuVldvh1L/hS8zvR?= =?us-ascii?Q?QhT8/KtVybMwwfB1BjjDftqw31aAPXzL0PLzVPPnDzZ8pgpVKG9+7sb38Ekc?= =?us-ascii?Q?Z8kk0vzhw+SYwnIi+ky3na24BYI/CfRdFnENlaIXbKGmYVaWn4ul+33orDHP?= =?us-ascii?Q?zME7RT9i5EXSxzGlNVic86MgRXAN6KsoKRQlu3jSbBtuWBIAK3v4tDpwtpbR?= =?us-ascii?Q?k8QZuRNwTkwNRWoLTBN8IeyV5loru44yq8AWroqWLV1w6WmvQvTJFKj2gIYU?= =?us-ascii?Q?73U0pFOt5t3hLl3x2AKw/La5?= Content-Type: text/plain; charset="us-ascii" Content-ID: Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-MS-Exchange-Transport-CrossTenantHeadersStamped: DB6PR0801MB1991 Original-Authentication-Results: xen.org; dkim=none (message not signed) header.d=none;xen.org; dmarc=none action=none header.from=arm.com; X-EOPAttributedMessage: 0 X-MS-Exchange-Transport-CrossTenantHeadersStripped: AM5EUR03FT008.eop-EUR03.prod.protection.outlook.com X-MS-Office365-Filtering-Correlation-Id-Prvs: 77801180-1727-4d05-938c-08d8e89d5b0f X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:63.35.35.123;CTRY:IE;LANG:en;SCL:1;SRV:;IPV:CAL;SFV:NSPM;H:64aa7808-outbound-1.mta.getcheckrecipient.com;PTR:ec2-63-35-35-123.eu-west-1.compute.amazonaws.com;CAT:NONE;SFS:(4636009)(396003)(346002)(136003)(39860400002)(376002)(36840700001)(46966006)(2616005)(5660300002)(6486002)(36756003)(36860700001)(6862004)(4326008)(8676002)(478600001)(2906002)(186003)(26005)(107886003)(336012)(8936002)(6506007)(81166007)(70206006)(356005)(70586007)(53546011)(82310400003)(316002)(82740400003)(83380400001)(86362001)(33656002)(54906003)(47076005)(6512007);DIR:OUT;SFP:1101; X-OriginatorOrg: arm.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 16 Mar 2021 17:03:13.4215 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: beb36ead-ac2a-445c-9f33-08d8e89d629a X-MS-Exchange-CrossTenant-Id: f34e5979-57d9-4aaa-ad4d-b122a662184d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=f34e5979-57d9-4aaa-ad4d-b122a662184d;Ip=[63.35.35.123];Helo=[64aa7808-outbound-1.mta.getcheckrecipient.com] X-MS-Exchange-CrossTenant-AuthSource: AM5EUR03FT008.eop-EUR03.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: HE1PR08MB2858 Hello Julien > On 16 Mar 2021, at 3:16 pm, Julien Grall wrote: >=20 > Hi Rahul, >=20 > On 09/03/2021 18:19, Rahul Singh wrote: >> Backport commit 21174240e4f4439bb8ed6c116cdbdc03eba2126e >> "iommu/arm-smmu: Handle stream IDs more dynamically" from the Linux >> ernel. >> This patch is the preparatory work to fix the stream match conflict >> when two devices have the same stream-id. >> Original commit message: >> Rather than assuming fixed worst-case values for stream IDs and SMR >> masks, keep track of whatever implemented bits the hardware actually >> reports. This also obviates the slightly questionable validation of SMR >> fields in isolation - rather than aborting the whole SMMU probe for a >> hardware configuration which is still architecturally valid, we can >> simply refuse masters later if they try to claim an unrepresentable ID >> or mask (which almost certainly implies a DT error anyway). >=20 > For single backported and verbatim commit, it is common to keep the origi= n tags (I usually indent them) to show who is the original author of the pa= tch. >=20 > Since 7936671da9fbf645d6bb207608f7b81c27f992de from Wei Chen as an exampl= e. Thanks for reviewing the series. I will add the origin tags in the next ver= sion. Regards, Rahul >=20 > Cheers, >=20 > --=20 > Julien Grall