From mboxrd@z Thu Jan 1 00:00:00 1970 Received: by 2002:a17:504:5906:b0:1be9:327d:8ee3 with SMTP id nn6csp2475099njb; Mon, 17 Mar 2025 12:25:58 -0700 (PDT) X-Forwarded-Encrypted: i=3; AJvYcCXKoPNxGWPoP6ve3YoyUWMO3G6QXIKecViun/unhwUE7vji0ZmpBbD0soGjpUucmObjXlQIU9eVnYJNgA==@linaro.org X-Google-Smtp-Source: AGHT+IEhqBGSk1H88/gaDCbGrDfzx0L/VfE6Q5D1wcBIuDknJKCs9/66nSZ4qjqAwL2br0TfLldN X-Received: by 2002:a05:622a:255:b0:476:8412:9275 with SMTP id d75a77b69052e-476c81c5a07mr218444191cf.35.1742239558753; Mon, 17 Mar 2025 12:25:58 -0700 (PDT) ARC-Seal: i=2; a=rsa-sha256; t=1742239558; cv=pass; d=google.com; s=arc-20240605; b=M8A0Fjn5QNdZjr8hiXui5nN4d2phPkScbTkRjdc8ztbkrfKhzoP+nEetYYikvQCtQP V87iai9Bzp//+9tznaM9YBDsOFQbg8jSg5GgH6fZ8Zwi+iiuS+Ag+dJacDDWqQ4vFQgc V7AkIsUALpc0tKG182nkGeCCHdM82MVVWmZrMk++cW82ihQwSEdu8r4CO0vXrKZ+pjmH ReMuOv9OzEN63TZZYmOWy8bXYVX9iuY5qK44vkzz/a6Bmd7rN6ckbbwhXbPiyErbcswE Fb4m2JWfRE3nWYJqNCxIInElr0xqaFogoBcqK6ulmGquIsrios5k2JodfEyX9A92ClVG DxjA== ARC-Message-Signature: i=2; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20240605; h=sender:errors-to:list-subscribe:list-help:list-post:list-archive :list-unsubscribe:list-id:precedence:mime-version:in-reply-to :content-disposition:references:message-id:subject:cc:to:from:date :dkim-signature; bh=DlrNBrVmisuGBSQw0wYuavgcLTsMKpXlKp4myEJW54A=; fh=WpLlbl1CoqEIXvApoDc/enmP3zvxzN9pD4f/PAAe70o=; b=h9iZk+rlQsivnFI7ZNnWSJYg5ZAd0JuRg/Zcdp3k7Pj9SM2I9MtwjGh/2MuZUtbpEP jHAG+oSxCY8Dy/8kA4TOLuISI1CnNDmQ3zVWF4YDgbm1DSEeJ/cf26oKri55wupa0xHW uQPNGocXgYnBBTZNjt7s01u7cDPVZ/o8Gpp6q0bEjvuaAeWwYmRe6/W5NCSrSrzz3NxN cQACwJgdOqwCIP9MLfxEe9qqmUuZ9zWUsGUWe+vYVMMDEjLMQpdqQcs9/iq35xL5vJ7L lwdXH/uzJ6++b14nVMjKLKNxBBZduzQ50pS6/BaBRQNHjLBgPRMcDg//CSwuR4vj74Jz NvMg==; dara=google.com ARC-Authentication-Results: i=2; mx.google.com; dkim=pass header.i=@Nvidia.com header.s=selector2 header.b=WDW1xZcb; arc=pass (i=1 spf=pass spfdomain=nvidia.com dkim=pass dkdomain=nvidia.com dmarc=pass fromdomain=nvidia.com); spf=pass (google.com: domain of qemu-arm-bounces+alex.bennee=linaro.org@nongnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom="qemu-arm-bounces+alex.bennee=linaro.org@nongnu.org"; dmarc=pass (p=REJECT sp=REJECT dis=NONE) header.from=nvidia.com Return-Path: Received: from lists.gnu.org (lists.gnu.org. [209.51.188.17]) by mx.google.com with ESMTPS id d75a77b69052e-476bb819e53si108832691cf.409.2025.03.17.12.25.58 for (version=TLS1_2 cipher=ECDHE-ECDSA-CHACHA20-POLY1305 bits=256/256); Mon, 17 Mar 2025 12:25:58 -0700 (PDT) Received-SPF: pass (google.com: domain of qemu-arm-bounces+alex.bennee=linaro.org@nongnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; Authentication-Results: mx.google.com; dkim=pass header.i=@Nvidia.com header.s=selector2 header.b=WDW1xZcb; arc=pass (i=1 spf=pass spfdomain=nvidia.com dkim=pass dkdomain=nvidia.com dmarc=pass fromdomain=nvidia.com); spf=pass (google.com: domain of qemu-arm-bounces+alex.bennee=linaro.org@nongnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom="qemu-arm-bounces+alex.bennee=linaro.org@nongnu.org"; dmarc=pass (p=REJECT sp=REJECT dis=NONE) header.from=nvidia.com Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1tuG5F-0005Vn-0T; Mon, 17 Mar 2025 15:25:09 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1tuG5C-0005VL-Pk; Mon, 17 Mar 2025 15:25:06 -0400 Received: from mail-bn8nam12on20608.outbound.protection.outlook.com ([2a01:111:f403:2418::608] helo=NAM12-BN8-obe.outbound.protection.outlook.com) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1tuG59-0007wl-3c; Mon, 17 Mar 2025 15:25:06 -0400 ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=InX4TQGRSn1b4pDuUN58y0R2HRFvmj7iMA4RLKxcaojdOJKozOdolASewfxpsmDXX/+1vFQ7uEcZjMw6K0z0dBb8KvEs+bbU6oLmP5FSEn2cYaapLTgNCN6fS8LAYCConYjHx7SL2onVr3qyQgkzTWhDXWVpUTAEfTjh0gAod86VDmoScRkdLfhPDk1s8zBIhIBwJsJshvQ61xMZ0uq7YwWZCn05d7dsgzofuFBEJNfbc3qt6W+AMI8EgpkrsgecWGz0+JOj4LUQktzcjnd/ek4IPfw+m9wGXJsLtSUTx3iXIBDzhELyVRtXZjf8YH537ar1lgg4nenyUKkQfrvZfw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector10001; 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=DlrNBrVmisuGBSQw0wYuavgcLTsMKpXlKp4myEJW54A=; b=fk0Wks4j7meGUfooTROBJG9U1hwAYj4U/RUxATD2EiL7/otCePA0x41Elg6+ip6F67i907T7oAaUR9vIerZwxByTPwLEG8PXSM+/tYJVGcyh4B4Q/AlR08Yw4EfhcWvF60vwCtoUB+kNQdVXCyAeO2m3BJXgOd9zzxVL/QmOr9Z6au14G1xlIdhiv7GUDuIeRzNaxLY2SDDSs2CGT/XMQfqBG73/Az+++1PxdI8hfZ+D2EMVEEp37ayRKx/jKDTsV7ZnWy2+XTfFBfyLfZopJOf4shhzzVq224hx46I3Rrby5fb+Tu4rKt+n8onpm4Aw1TFz+6lz5lDOwIpXUILndA== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=nvidia.com; dmarc=pass action=none header.from=nvidia.com; dkim=pass header.d=nvidia.com; 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=DlrNBrVmisuGBSQw0wYuavgcLTsMKpXlKp4myEJW54A=; b=WDW1xZcbLEJDf9KbOhRyFjDLl2U+7v4vWl+rNYIu9oC/Zpj3jGDIV6/xIrbfoJf6dZiR8beuYWmVEFPc/JoJL8D9zo9uHs/gaEcqXcZIwujTUQRfwYQep7mdbN4KgeivBMQBmZ2avKn5mWoZbgZhxh6fVxtdSQzmf1T2I/tJHV4/PBWlxb51rsrR2ZxnvSaju8ODLD9a75OFB8mvAZ6my09f/s8ivmbzDC6icIrM3YZYBwmff1uUk1rVIUZYYUNg+MVWQ93pGJo4t4FrTLw72fMlsqmqVQ3suEjC6Tyn/1RT9/Cr+2F+kZpW5Cd1xbEGwLOGybZKvXnNJ+SZ4DvuTQ== Authentication-Results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=nvidia.com; Received: from CH3PR12MB8659.namprd12.prod.outlook.com (2603:10b6:610:17c::13) by SA0PR12MB7462.namprd12.prod.outlook.com (2603:10b6:806:24b::5) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.8511.28; Mon, 17 Mar 2025 19:24:54 +0000 Received: from CH3PR12MB8659.namprd12.prod.outlook.com ([fe80::6eb6:7d37:7b4b:1732]) by CH3PR12MB8659.namprd12.prod.outlook.com ([fe80::6eb6:7d37:7b4b:1732%4]) with mapi id 15.20.8534.031; Mon, 17 Mar 2025 19:24:54 +0000 Date: Mon, 17 Mar 2025 16:24:53 -0300 From: Jason Gunthorpe To: Nicolin Chen Cc: Eric Auger , Shameer Kolothum , qemu-arm@nongnu.org, qemu-devel@nongnu.org, peter.maydell@linaro.org, ddutile@redhat.com, berrange@redhat.com, nathanc@nvidia.com, mochs@nvidia.com, smostafa@google.com, linuxarm@huawei.com, wangzhou1@hisilicon.com, jiangkunkun@huawei.com, jonathan.cameron@huawei.com, zhangfei.gao@linaro.org Subject: Re: [RFC PATCH v2 03/20] hw/arm/smmuv3-accel: Add initial infrastructure for smmuv3-accel device Message-ID: <20250317192453.GR9311@nvidia.com> References: <20250311141045.66620-1-shameerali.kolothum.thodi@huawei.com> <20250311141045.66620-4-shameerali.kolothum.thodi@huawei.com> <71b73212-3d8f-4c9d-93a4-bf07c0f169e3@redhat.com> Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-ClientProxiedBy: MN0PR04CA0003.namprd04.prod.outlook.com (2603:10b6:208:52d::15) To CH3PR12MB8659.namprd12.prod.outlook.com (2603:10b6:610:17c::13) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CH3PR12MB8659:EE_|SA0PR12MB7462:EE_ X-MS-Office365-Filtering-Correlation-Id: 777a8228-2d25-45ca-c746-08dd65896547 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|7416014|376014|366016|1800799024; X-Microsoft-Antispam-Message-Info: =?us-ascii?Q?0AdE2SiZGeXw57zHe8Ld7xOM7KgiFJ0CVwznzqSigmRTR7BUAkOQwSPeFa4I?= =?us-ascii?Q?GSs3fV3xYU24e9rV5kAjJaa2f4rDRsXtu0dth6C6fxvmnJiUSN1AoxLDcOHw?= =?us-ascii?Q?pqxmwaguYdCUbru+dcj1bK3HgAIk5FrxxMVH+KI/xiONXSafwmmHeOquJaPp?= =?us-ascii?Q?2WGtN64WORG0fxwVC1wbB1BnUgBNrxsT6mobtebJxWc25TdSFuCDfUBNNwjq?= =?us-ascii?Q?sXpceb49qrkVUV5E+6Pf5V8IguK6xuZrjmm+8fcrOJ8vMpfWFz664qNmEfyG?= =?us-ascii?Q?ih+INtBeaxDoTGcu+c/hdiay3k4TUtFxcDkpxQkjd2zfVHFDbz6vgAtzsCtQ?= =?us-ascii?Q?hm54pmwg2BV4fKWunhUmK+D6pRlbMgj82gWaLSWWpLjLGeJ0O8ILSAoT+JGu?= =?us-ascii?Q?HtY56o2X/mdK9LfTuMSACknbc8k65qqSk2mt4/8vm+77rMJHRJL4sAA8pErS?= =?us-ascii?Q?ZOauFl9AuMWM0TYTruoQtkucR0z9ufCJQGeYp3GTyf5jXfG+3645j8RAymgV?= =?us-ascii?Q?2ynkV0MatTHSsHWCnuhHR2K1qGACFDten9qm9rwpH/HbEfvJlxejZYV3XpSh?= =?us-ascii?Q?jpq1RWhbjZ9OZonz1VERYciuSEBeWA+kmC4gaEMf31Tlm0oPPzbACC+wOmxq?= =?us-ascii?Q?qXiyvZD8JwRjuzEgISohGSGF4dljK8I3y5mCkyxiCRuK03gSgdskcVRUicED?= =?us-ascii?Q?LUurIpEbLa9eyqdWKWXG1WrkGAxQEIf1PvoQ0ZGD5laUl4lyMjObPeOAR3T+?= =?us-ascii?Q?tv61xzrAUQTci0/dszXSd2i+p8G2Ik0mKICsl2Zyc4bUJdMjczQoacP6zVxn?= =?us-ascii?Q?6w5qWJUfcUiDrMht1ZYMfqmllUz9cLaNbmTgOn+wXn+Xa7POTB0g6i4OYEOH?= =?us-ascii?Q?VJ04lVJo2+iWyfo316RVJyx/fV/gw1CeukLWrgU4CMPbzJVHYv6Lg09cImxy?= =?us-ascii?Q?oco+cnn9l6W5oxmZVrShB1hGaMecUwpLihbHZBUS7F27JkybhhQ3nHIfEp5w?= =?us-ascii?Q?Li5kDgz5UqxcFq9oA8PSVTy29fe5okVvW1/xwhbU0iVYgqYKL4wEIbR8BjiF?= =?us-ascii?Q?InpfirzWP9LWJTf8wPMmcrH/Ao5Pvi+DGrKIncAH5zjpyHg8ZWqCo6qA1t/r?= =?us-ascii?Q?5j0Idr8MxWLFdU6OrLO9XO7oS/ywYCWgDOzlGWswU3nm2Y7CjZrypfzh1u2E?= =?us-ascii?Q?44H+9zueUiB2z4i1A12bXVJpSYkILgjIb5rsMDLDFUNumekORSErwUmtHYJw?= =?us-ascii?Q?epsY5D3MQBpanZCUhgdqVvSmK9tGkLx5yc+FqvzSDN6PJd6q4+rfSWLxCo3l?= =?us-ascii?Q?Dup7VpDsvnOXSSE6Vca7fx6TApbWuodcIDJBnFwUtVWkeUnsMGY2+oaqZfL4?= =?us-ascii?Q?tRKRVT4EOEB7RwDlXnMzEd8dCmyf?= X-Forefront-Antispam-Report: CIP:255.255.255.255; CTRY:; LANG:en; SCL:1; SRV:; IPV:NLI; SFV:NSPM; H:CH3PR12MB8659.namprd12.prod.outlook.com; PTR:; CAT:NONE; SFS:(13230040)(7416014)(376014)(366016)(1800799024); DIR:OUT; SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?us-ascii?Q?UcmzV6WcbpTyw7lLQD4FZT3WBhKSWJgR35g/frcgf26WB7+iWM8YJKo5etKC?= =?us-ascii?Q?iFK9P8JY0JYHjVzDTrmOdwinj3g+CHdtP6Pq0oiNj0U+yW54c/iKBCEjDKI5?= =?us-ascii?Q?KG7NuXli6YpLCLRn+nGJ/5VojR6KblqhFm2zDmzYnNgM07OelQtUgH+mjcuY?= =?us-ascii?Q?HUyAU+DxwOaJODXuxcz9cUzRnrQU9njkNamigdvy94okhzFjrUWyokGkEbHy?= =?us-ascii?Q?3xHbnRA3/P3rZqf5dp8/xg2SHgtN+rYnZHdqqPWpTZ6iAm2Re9mNvgodfpK9?= =?us-ascii?Q?EeOXSZZvBgLuekQ95HYPFI7WdwZC5xHjrpC7FOVodzQe08RojHPcCyPwK8VT?= =?us-ascii?Q?CmJiA3HEj73XvsuFjuHL5SZxmxrsKL+Zb00y+ARphyIZfjItaq4H8hQzY/S/?= =?us-ascii?Q?FZhqpT2/J++GRwhyYGp1OTuqbS0hYsFlAEJ7K0ZeKnQ+gghHGuKePdnvDYoT?= =?us-ascii?Q?w0Y9nvrb8Bqv0D8YqB0eElX4dBSs/sGY1uYoWw+bKOP0E59Oaycq8NSNVilB?= =?us-ascii?Q?frEkAkf4guiQpEb2362yp3otBBOm6QqffwAiPDw/Kbc3RL1Ohuq6GyzfCoa6?= =?us-ascii?Q?HVUnojx4CmEvZck0G4axqsDQhfE1UvuBUfgN9wlDZT6NxhbqDTALHfWC0fo/?= =?us-ascii?Q?DtBMNik+PPvFqENP0qxOvzNpvzbmRktG7+XqbSPbmc1UpaABTtkelAttpxR+?= =?us-ascii?Q?VlOLCqHCKD67kggvdidNLNpqzqulXMc/TySd3CIZt/6IuFwbi2PO+XjN+b7N?= =?us-ascii?Q?hvpQQuxpZLBPgW94hHsnzkPePfzFgISX4BV3Q1KeyzchJAwbjd/817C/TKF+?= =?us-ascii?Q?JX0OIg8hGudrDVKv+il5wKnNWIgR8CqR4A07kQYpzItNi/O549IgL1MGuTic?= =?us-ascii?Q?PmoFgBsbjsd3DZMuQwL8csb1PnRkagturhCYJOcc/SWRlkE0Sqt+MFRWbR21?= =?us-ascii?Q?DJRpsz2KdpnF3TOKTa81OOdUOm5lBmWhgbn98NwT4L2qYiCOuIns8hAGcP/b?= =?us-ascii?Q?hJ0tUSSdPg24LZyjmyXKmGOrsBByzXj6KoRzwNPyhE49Vj58BwXKtx3lxkGF?= =?us-ascii?Q?EOkgAml4iasOiAawJPPGenfRBkWMvT/rv0Ix7gNpwUe1bEtGet/cnFzv2QDS?= =?us-ascii?Q?kDW/CaQje+QjI9FxM6tbDONBgA1W7+RhwogOExB0n3lz6nM0j0uaZTRFG1sB?= =?us-ascii?Q?6YqXvd1IRQ49w8tQw+NypfOVYvehvZPMmMm6ZiMbqChIUtdL7ZLjLgk/cs7H?= =?us-ascii?Q?GAHaQp3wkIGUsG5ZhWJUgWPjVqsuKa//yyw4m3xRbGmTh7mSbZBxqJTCycP2?= =?us-ascii?Q?LoDx8gZ+Q77+hvBAKq3vyGDA1gqoLgzePqk6Wkp7C/Fj+4n4rwnKwllsDF/a?= =?us-ascii?Q?HjfgECIbN24g1wMvpvuMxxMOexJmj196IUx4DXUq8rhuWV71Y3Aa0S6f+ZX4?= =?us-ascii?Q?xQ44lIauSFt/tlx/xxt8TAlhFDAbTkY2DIqDa4p2o++G8/JV4KP+9abHX+CG?= =?us-ascii?Q?b5QUzQoYEUDLxBolDLWF691pHcmElNsETp2lHMII3ANcWKkJB7ESmL4mT2+c?= =?us-ascii?Q?9+MyfplW6aYstVuMaF2Pzkl8aPd+bBnHTDuLdXHX?= X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-Network-Message-Id: 777a8228-2d25-45ca-c746-08dd65896547 X-MS-Exchange-CrossTenant-AuthSource: CH3PR12MB8659.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 17 Mar 2025 19:24:54.2483 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: FUPSXnKAqiHvkrC/0dtimCJ3wG9/X3yIA+BE9mUYoV5ppeM+cy2jJv+rHs+I/dSc X-MS-Exchange-Transport-CrossTenantHeadersStamped: SA0PR12MB7462 Received-SPF: permerror client-ip=2a01:111:f403:2418::608; envelope-from=jgg@nvidia.com; helo=NAM12-BN8-obe.outbound.protection.outlook.com X-Spam_score_int: -23 X-Spam_score: -2.4 X-Spam_bar: -- X-Spam_report: (-2.4 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.335, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-arm@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-arm-bounces+alex.bennee=linaro.org@nongnu.org Sender: qemu-arm-bounces+alex.bennee=linaro.org@nongnu.org X-TUID: vOpWeljO3FoR On Mon, Mar 17, 2025 at 12:10:19PM -0700, Nicolin Chen wrote: > Another question: how does an emulated device work with a vSMMUv3? > I could imagine that all the accel steps would be bypassed since > !sdev->idev. Yet, the emulated iotlb should cache its translation > so we will need to flush the iotlb, which will increase complexity > as the TLBI command dispatching function will need to be aware what > ASID is for emulated device and what is for vfio device.. I think you should block it. We already expect different vSMMU's depending on the physical SMMU under the PCI device, it makes sense that a SW VFIO device would have it's own, non-accelerated, vSMMU model in the guest. Jason