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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 33C73EB64DD for ; Mon, 26 Jun 2023 18:15:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References: Message-ID:Subject:CC:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=0lsZ200V8XFZFTpksLYs1I++MHocVafEhZptpEwsHdA=; b=yh8wrlyn2mvhUv sU99fvHRX/LIjJ0NAYMEw3lbyCf/ElXsGLy2xohPIgjhOuWjaD9E86fawggS7pGODcWot7MAgKV45 jjHeXDLmxbZEMLNd6BXPp3yIgNlimXXw7bS+MvdNdiboI4xXBfmKkKXI1bm1V6Tu9CxIFJaEOvSgA 3pxWNnu4XK7Y5FAOJ7URN4ubJQ8U4le3XKTSLpZmB6WMx4xVr+gLLCq/6xqAgusNXnl+M4deM08zq Ir73iG1j9AChwcUk0DyP55g1AIy62ZfSviyc4YO4q8oPTj+9d0sl/qV9XdhDDGsvClyvvxJOOMHUY pjYkedJBKb9YKEYfEzig==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qDqk2-00Aph5-01; Mon, 26 Jun 2023 18:15:10 +0000 Received: from mail-dm6nam10on20615.outbound.protection.outlook.com ([2a01:111:f400:7e88::615] helo=NAM10-DM6-obe.outbound.protection.outlook.com) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qDqjy-00Apfn-0R for linux-arm-kernel@lists.infradead.org; Mon, 26 Jun 2023 18:15:07 +0000 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=hN7yqc+MiIvaTZMrj7hVlDmUCzQ1DTcjAumSS9UYGgIhcBaCssB4wMglz1fJFFV5//4IUCupH92Eitms874He7OjLS+dSoVzIR9skKcCzoHrC75e5a1qXMVsiE3vaB3YrLBZuvYLrD2eVdl7n0hMPMZgF9SmmqokeC/u3IfxNYQCj8rzsK1tLweouSMVgzdLULHzwUDB9pB3psmfa7epOS48YfXyHQc4iTktcNUWBZrzDaocNWwLhez9zhcJdnSlKcPuYH8DgkDPOTeHkH8tX66AZHzvG+XyyxqsuG5Goteko/0RxmAphTrozzEzbgV6aPrz2zj/bMNDxovs4ixtzQ== 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-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=AYv9UuD7rHYsNptgWR+jFOi6PzaywRm7qoOW5XRpd18=; b=nZsJoo6Y2SXtbluY4Ju+UHDo1EOC6Dv2jWOiu08eraSWWeOT6XRbPoS+q84FdYOGMjGPt0H4pSqbhTyDz8s021z6qWnTytKNCyQd4vwEZaAijprHHha+28Pf2k2IJiFptfahon9jK8ZJJeMDA6M2WwrZJrIZ+V1DiVQ9bW+BeJ6CPNOeeqRRt9EVBYGcz7u69pAS/A+fiArgYLfkHbxGGtMubvxIIPvZsBxTAWcTNn1XBRXTNtXOe/Mlb+LB1ZPA6s+Dh4wt8S/ntgH2ho8GrcHxSmPmkct+hO2Yu+buqsn9+Tux9RLAhW9Q/Kojf6WTt76uRzesM729RvQHhSM1bg== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass (sender ip is 216.228.118.232) smtp.rcpttodomain=google.com smtp.mailfrom=nvidia.com; dmarc=pass (p=reject sp=reject pct=100) action=none header.from=nvidia.com; dkim=none (message not signed); arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=Nvidia.com; s=selector2; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=AYv9UuD7rHYsNptgWR+jFOi6PzaywRm7qoOW5XRpd18=; b=t/UVLECOrXFxa7iqYntwIBn1xNZ7Kr/gZtSR7heSMcfFBbtTdh2zYk3jwL+xn++oY71ackH6pqZvsf/ff9UiQt4U1YCrBxtYGIcxWWhgoPjl5YD8+j7wTiPneI5/FHMxVID5MSe4NzX9hbIAh3HiyS9y9mvruDnWTaZ8/xWTixam5LAXbfb2zRneeMiImHAeLF5O91lPGztQYiwach0LBLk/ijMkT98u1Vcm4kQfbrSDBTmJ1QsNiwkB6j6zlqPzy6tKTHzNx4aK/jcDjlLCJLKC2LaEJBNqFOX6ZHooqEbe855XdVqMZLWgIqat7T7tjL0eN7J6xR08YDyDB+I4Tg== Received: from DM5PR07CA0120.namprd07.prod.outlook.com (2603:10b6:4:ae::49) by CH2PR12MB4118.namprd12.prod.outlook.com (2603:10b6:610:a4::23) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6521.24; Mon, 26 Jun 2023 18:14:51 +0000 Received: from DM6NAM11FT094.eop-nam11.prod.protection.outlook.com (2603:10b6:4:ae:cafe::eb) by DM5PR07CA0120.outlook.office365.com (2603:10b6:4:ae::49) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6521.33 via Frontend Transport; Mon, 26 Jun 2023 18:14:51 +0000 X-MS-Exchange-Authentication-Results: spf=pass (sender IP is 216.228.118.232) smtp.mailfrom=nvidia.com; dkim=none (message not signed) header.d=none;dmarc=pass action=none header.from=nvidia.com; Received-SPF: Pass (protection.outlook.com: domain of nvidia.com designates 216.228.118.232 as permitted sender) receiver=protection.outlook.com; client-ip=216.228.118.232; helo=mail.nvidia.com; pr=C Received: from mail.nvidia.com (216.228.118.232) by DM6NAM11FT094.mail.protection.outlook.com (10.13.172.195) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6500.47 via Frontend Transport; Mon, 26 Jun 2023 18:14:51 +0000 Received: from drhqmail201.nvidia.com (10.126.190.180) by mail.nvidia.com (10.127.129.5) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.5; Mon, 26 Jun 2023 11:14:40 -0700 Received: from drhqmail202.nvidia.com (10.126.190.181) by drhqmail201.nvidia.com (10.126.190.180) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.37; Mon, 26 Jun 2023 11:14:40 -0700 Received: from Asurada-Nvidia (10.127.8.9) by mail.nvidia.com (10.126.190.181) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.37 via Frontend Transport; Mon, 26 Jun 2023 11:14:39 -0700 Date: Mon, 26 Jun 2023 11:14:38 -0700 From: Nicolin Chen To: Michael Shavit CC: Will Deacon , Robin Murphy , "Joerg Roedel" , , , , , , Subject: Re: [PATCH v4 09/13] iommu/arm-smmu-v3: Implement set_dev_pasid Message-ID: References: <20230621063825.268890-1-mshavit@google.com> <20230621063825.268890-10-mshavit@google.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: X-NV-OnPremToCloud: ExternallySecured X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DM6NAM11FT094:EE_|CH2PR12MB4118:EE_ X-MS-Office365-Filtering-Correlation-Id: 785828db-9661-48af-d6a5-08db76713c12 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:216.228.118.232;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:mail.nvidia.com;PTR:dc7edge1.nvidia.com;CAT:NONE;SFS:(13230028)(4636009)(39860400002)(346002)(136003)(396003)(376002)(451199021)(46966006)(36840700001)(40470700004)(5660300002)(33716001)(2906002)(186003)(26005)(47076005)(426003)(9686003)(36860700001)(356005)(40480700001)(41300700001)(40460700003)(83380400001)(70206006)(70586007)(8936002)(336012)(8676002)(55016003)(82740400003)(7636003)(54906003)(4326008)(478600001)(966005)(86362001)(6916009)(316002)(82310400005)(67856001);DIR:OUT;SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 26 Jun 2023 18:14:51.2744 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 785828db-9661-48af-d6a5-08db76713c12 X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.118.232];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: DM6NAM11FT094.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: CH2PR12MB4118 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230626_111506_202991_B53C1080 X-CRM114-Status: GOOD ( 16.89 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Mon, Jun 26, 2023 at 10:33:58AM +0800, Michael Shavit wrote: > > Would you please elaborate a bit more for the use case of > allowing that? > > In short; to support devices that use SSID to isolate different > (device) contexts. Those contexts (and the memory available to them) > is partially managed by the device's Kernel driver. What can be a real world use case for that? > > And which test configuration do you cover > using smmute? Would you mind sharing your test commands? > > I used the setup suggested by Jean in > https://lore.kernel.org/all/20230511195928.GA288490@myrica/ , with the > following commands: > >>> > # Basic test > ./smmute; > ./smmute -u mmap; > > # Test invalid access to not-mapped address > ./smmute -u mmap -f drv; > > # Test invalid access after unmap > ./smmute -u mmap -f write -d; > > # Check smmu_mn released when killed > mount -t tracefs nodev /sys/kernel/tracing; > echo 1 > /sys/kernel/tracing/events/iommu/enable; > echo 1 > /sys/kernel/tracing/events/smmu/enable; > ./smmute -u mmap -k bind; > cat /sys/kernel/tracing/trace; > <<< OK. Thanks for sharing. > This only covers existing SVA functionality. To test the functionality > introduced by this patch, I used a device capable of generating DMA > transactions w/ SSID and a test driver with following tests: > 1. Successful dma Read/Write to buffer mapped on domain attached with pasid > 2. Unsuccessful dma Read/Write to same buffer after domain detached > from pasid, or after buffer unmapped from domain > 3. Variations of the above with a domain attached to multiple pasids > > I've been considering migrating those tests to the smmute driver if > that would be valuable. Is this on Gerrit too? Thanks Nicolin _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel