From nobody Sat Nov 15 16:36:44 2025 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; arc=pass (i=1 dmarc=pass fromdomain=nutanix.com); dmarc=pass(p=none dis=none) header.from=nutanix.com ARC-Seal: i=2; a=rsa-sha256; t=1750340320; cv=pass; d=zohomail.com; s=zohoarc; b=Ykb5xR+6Gy7LCU0DioBBTxWqTC8Bhur+v3RA/WvIeLH7Dtianumn+/c5sjlPJQx9PEqddrFoXlW2FZRjv45G3kHa9MXOBmlxroji1i3AqUIaXjFUwy+2gG/Pi9On712BgQqSaQl7TXQppYtfrxi3o5P0Hlm8A2Qk26jMl1rBHIY= ARC-Message-Signature: i=2; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1750340320; h=Content-Type:Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To; bh=Z9o5YubL1i4HRBF8nKK3/9MxxJxTJXZT/EZtnIjvNQM=; b=bdbJjm9HHYF/BBvNX2M9RT+e2BlAaCyrzyE+myOOSCGg/Dj9iySRPOL6PpKCD3yCelm1c+S/ul9MefFcXCO+DMoKnnfHXSEi+xShCc1cM8DS+O4pWmOwi0HkkVgQNq1XlfqvK7UBBdTOJQ2p9hRWuoJnCNT+g0WF4SO0bFzCik0= ARC-Authentication-Results: i=2; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; arc=pass (i=1 dmarc=pass fromdomain=nutanix.com); dmarc=pass header.from= (p=none dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1750340320753572.398229800941; Thu, 19 Jun 2025 06:38:40 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1uSFNu-0004WW-Es; Thu, 19 Jun 2025 09:32:55 -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 1uSFNo-0004P9-UG for qemu-devel@nongnu.org; Thu, 19 Jun 2025 09:32:49 -0400 Received: from mx0b-002c1b01.pphosted.com ([148.163.155.12]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1uSFNl-0008GS-Sq for qemu-devel@nongnu.org; Thu, 19 Jun 2025 09:32:48 -0400 Received: from pps.filterd (m0127843.ppops.net [127.0.0.1]) by mx0b-002c1b01.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 55JAvH23013023; Thu, 19 Jun 2025 06:32:42 -0700 Received: from sj2pr03cu002.outbound.protection.outlook.com (mail-westusazon11023091.outbound.protection.outlook.com [52.101.44.91]) by mx0b-002c1b01.pphosted.com (PPS) with ESMTPS id 47976j3rag-2 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 19 Jun 2025 06:32:42 -0700 (PDT) Received: from CH2PR02MB6760.namprd02.prod.outlook.com (2603:10b6:610:7f::9) by PH0PR02MB9383.namprd02.prod.outlook.com (2603:10b6:510:289::11) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.8835.19; Thu, 19 Jun 2025 13:32:33 +0000 Received: from CH2PR02MB6760.namprd02.prod.outlook.com ([fe80::fd77:ea65:a159:ef51]) by CH2PR02MB6760.namprd02.prod.outlook.com ([fe80::fd77:ea65:a159:ef51%2]) with mapi id 15.20.8857.016; Thu, 19 Jun 2025 13:32:33 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nutanix.com; h= cc:content-transfer-encoding:content-type:date:from:in-reply-to :message-id:mime-version:references:subject:to; s= proofpoint20171006; bh=Z9o5YubL1i4HRBF8nKK3/9MxxJxTJXZT/EZtnIjvN QM=; b=VdGJcI/eoMRx4EfFbVP/xx0eZVqW2z0cpg60D196dCW24nMV6QG5pm8CI PdjXvgmj1gBZneuxPsX1ppxx1bIMG9KG/x7HPZ/hycvWOefiDPFqtIymIbXI5vAW VzfM0IAz+e8FSwoLVFkRguf5rs7gTKPsfiRxSvdRSQYakmW7Q1NF8oBks7+bMlGP Te2rDwNyIGAKY3ZUFmVKE+cYEbWrPIKPemrdU1k8/nMOQVIR/KakgZ6HKgl7FP3U HXqaVz55Wa5e+bcNK61FU6ha07VGeygzt6ftwcAUY6cBX1mwTAYST18l6NjnAFhp Ux32iYCJ5pzW7qi5fpEK9Yb5vIYGA== ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=jlEa5wvYS5NbGmtUQK073rXjdOiQSJcQwDAbIf015GnL5YZ+rfd4AcE13hGqwwq9sFLOIV2mm+roil7pn1/7asrHntpW0k4VGrcGn6CJK/vXs7GUJ26a6JEfQY+6FSXYin6r+Rm96NW6QDjjuKZIfZAa0oLEAWVD5RD2sjlpvZ8kyO+37eEK+IR77SO0HrVN9N9TzfTho83U9hCeAqXPuvP1HWE9VHfF5uz3wSxxCTvNEpJCIRMVcytila3s4JKhmSGirVpTz40naaEaSEKKh2HHdz+koFWpiZRpF4H8WV0WH1gqaHAWckVWtnFc6TbKfVs6WAmXlcaCGhUJFJFEgw== 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=Z9o5YubL1i4HRBF8nKK3/9MxxJxTJXZT/EZtnIjvNQM=; b=rQtRK1p3I92bFnFNpeGDPtAOPuQTDBm1omgozUmZ/FKKDYdAuTckdTDsb0L4VpBDlDJk6uGkpcLhZ6GPA4qOn9APTZawkCwiyxzrAy6IDSm86psOt+JBEpfxM6R/bmoyIr072Sz6PVVl/TrdrVTCaF/A7WlVNXkRIskRhdy7mAuu6PAKHaL8iKK4JuB8SnqFSamR/GTwCtV7iAEtaAr4eb7nbfHh90TQnXs6cgBNKKQZAmhODnoYsgFkui0WzxWV0xKMk/p06YHu3K5Des9d8JMb+xp3aTYthRDOQ5DsvRzeJlpBNmcqfPeQlnwFtQe0hF8SZywKSL1Xbe1WD+pY2g== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=nutanix.com; dmarc=pass action=none header.from=nutanix.com; dkim=pass header.d=nutanix.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nutanix.com; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=Z9o5YubL1i4HRBF8nKK3/9MxxJxTJXZT/EZtnIjvNQM=; b=GDFfL9PV7QPYnWq5UxzHXF+0XDasSDR0oxNndSjTYWjNQvcybk8mVa8J22A8pBde/6ECrSOPMor4Lq5uLUoTKm/3h5NwzqlbVxSmxyekmzMMCNW60fZUWE075A3TUMVLofMbkEv+7EGIzmZAAhgtLNxNIqOTb/jYGSTtecR5UQQAbTZdJsSMkgbOJFODaz+9ho5esLRlMRJK1gF9MIJpjm21zzaTuomBAkYjN7DvMAuYL67erlATXHPb3pVAixkXSdNcXpxud1r4QUZZAYiR1nDCO2YNYsEXCeo2tUawzn0Vkxvhy+8zAg8lz8p4Mr18/wLe5EXWHG2kIWSOJCze1Q== From: John Levon To: qemu-devel@nongnu.org Cc: Thanos Makatos , =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= , John Levon , Alex Williamson , Paolo Bonzini , =?UTF-8?q?Daniel=20P=2E=20Berrang=C3=A9?= , John Johnson , Elena Ufimtseva , Jagannathan Raman Subject: [PATCH v4 14/19] vfio-user: implement VFIO_USER_DMA_READ/WRITE Date: Thu, 19 Jun 2025 06:31:48 -0700 Message-ID: <20250619133154.264786-15-john.levon@nutanix.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20250619133154.264786-1-john.levon@nutanix.com> References: <20250619133154.264786-1-john.levon@nutanix.com> Content-Transfer-Encoding: quoted-printable X-ClientProxiedBy: LO3P265CA0025.GBRP265.PROD.OUTLOOK.COM (2603:10a6:600:387::6) To CH2PR02MB6760.namprd02.prod.outlook.com (2603:10b6:610:7f::9) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CH2PR02MB6760:EE_|PH0PR02MB9383:EE_ X-MS-Office365-Filtering-Correlation-Id: 8ec00104-f45f-4353-15b9-08ddaf35bf1f x-proofpoint-crosstenant: true X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|376014|7416014|1800799024|366016; X-Microsoft-Antispam-Message-Info: =?us-ascii?Q?5l0sllaBlCA3kd3QmtlhqkQWDtDa+Qwsbxid2PSi3g8vUMKkE+2NVuIH6/fz?= =?us-ascii?Q?JzrBgx/2XIl/ukRy8yrBqfaeXOuCJAo1XYqXD6IE1M2SQNHD6t19QSOdIUxM?= =?us-ascii?Q?7jvROMf/CRD5TcKZ/Ueys2lZxgpJtNcbuP6idfuHCPKfTNXCGfV1d5aRgqJT?= =?us-ascii?Q?GwmGlbsdZaj0+++Vtms1caskuHNnlyZNkRvA8ueZHapkM7br9KMgyByQ7Pr/?= =?us-ascii?Q?3GkZ6AHByjzKuo3mExi0BSiZyZswGrvt5G6jJftmN7JcS4AH8njcm7ZlyMsP?= =?us-ascii?Q?IiFUx4zsLtr75FeWyQAcvdU19uaHeIFEATPUkhbY4Q+9W0iHq0k4/UNhkrWr?= =?us-ascii?Q?EvjtL2TAL6TPRjgd3/ZpbfXM+R4JCtR2Bc+Dc22FupSwGFJYjEH91so0/KFa?= =?us-ascii?Q?wlbXHAOD/Mke+BUU22m56khVWbxdDPJivwotMxgitza/teKl1Db/ETRAxGbI?= =?us-ascii?Q?3Bct2lZ2D8GV4xMJAqIQDL/smAyAXuHkg5WO5U2J+FOn+kwbWwVssbModPFr?= =?us-ascii?Q?BKhd/sEYRA3+0Zu/s00G6HoKdn1trxx17WYegOETt8HpDgNHkOKOPYIc4hBr?= =?us-ascii?Q?ruhaQJA9bjZBQjMfo2WtWTZ0BgOkF0iGeH23nZZVGOgJUHc3I0B1+/B0f7Tu?= =?us-ascii?Q?HOIdYGQUWZgE3OwG3oPxwQMkTiX44Os/C29Ql42y1RgiGq1InGm/q7ncuLog?= =?us-ascii?Q?NY2MqbfdYqV/RlaqRjjc5zuXyJbqrNw+LpLbZEyFMe7zQeVMd/zDOcTS92kl?= =?us-ascii?Q?wq8FAC98TxnVSK1dvybBDUSEwHxkbVFgv1Yi+exhgm3Kz1eLLk+omU8yHCDA?= =?us-ascii?Q?1Hm32QWPvRAG5dWqERZ79+5OKT5Xe1wVGJby5K4ETQb7EgVqcni9dEZ3HEtO?= =?us-ascii?Q?RxJaPsyxlFmTVJXJvf0kmRyvBcjKErerK0d9PY4qdPq+3DhiquqBniyOACRB?= =?us-ascii?Q?pPzx/6mckI6Uu+qyXzm3lWs0lGA1Yxau0azHpfzEYfStAhbe1bqAqiw5Ba/8?= =?us-ascii?Q?B0jnV6Tl5foKox3kRVsAHUheLSavHNE2Bh31+dx9FSLmWjEDWpXN5xGSAYbm?= =?us-ascii?Q?Gh3ZUBzoPfK5fvpi4KYpEBIQ9YEfbeTvkhrAuoR4QMAELkzPNctAbBosozYN?= =?us-ascii?Q?3ZSqK14Tq0LM3AMx91gx3nxH/LiQRHm6Lx/ykrz5jJEGDHoN1RFRvL6jVH0W?= =?us-ascii?Q?Ps0zlkQEusqGUraZ3io8ewdUsKyVtD+t1oMzbiveaE4kymHdKDTd0frNGTC1?= =?us-ascii?Q?wg50lgO/tirE36hNDjLQncF8MLzS5a1/uFKwkqy1rpiV6n0g55HZ8NCbd4nW?= =?us-ascii?Q?dRgE05a3ZZ+UTFkh3aH4PycBKbrlKTVM3e9ZIGDgnBccW8CWu1JmP4JBmA+/?= =?us-ascii?Q?6ABrfPLK4zR5PfP1CCCXCzwtQQAV2T5sS/OKN9P2vqCqbMtve1hD1N0R4KGm?= =?us-ascii?Q?D8W1Ozi5V+U=3D?= X-Forefront-Antispam-Report: CIP:255.255.255.255; CTRY:; LANG:en; SCL:1; SRV:; IPV:NLI; SFV:NSPM; H:CH2PR02MB6760.namprd02.prod.outlook.com; PTR:; CAT:NONE; SFS:(13230040)(376014)(7416014)(1800799024)(366016); DIR:OUT; SFP:1102; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?us-ascii?Q?jpC+tSDMAnTL/CGy+4JIMjo7nI0ey+7NnsI21HwYcFx4d10ariID/9qwgZTH?= =?us-ascii?Q?zKWgyqjrpIQVumitdnVAPMXk/CkunapYUOqzTmonnrGH54n/yb39KXNuhZrZ?= =?us-ascii?Q?+f98ax6sL9cwRAWhGvTYCFec5ncqQCkhD5c2aMhVYymS4Wu2STZ/9uu9sNKp?= =?us-ascii?Q?dlSaniWLb3NLu092MenZbwCkVM9RkJEgFf2eR0fdzhf8XgHNBrcsqynFqLFb?= =?us-ascii?Q?qkeNvy3gq/vhrV9QGJ0QNYR1m1tvCDQjQcWmW3fjXiNzmytXO1UPzT+LvyFs?= =?us-ascii?Q?UO8nWiEePYNGFTLM4+KfdKx44wnaVX407sv51TVK0jHGZnoVD1HvIDa6hsaI?= =?us-ascii?Q?Bk48zIIrDDcSvrzdjaoELIuJFID4klmuZ+m8voThKroB4th44+Ws9M89HnHi?= =?us-ascii?Q?UPsUdEm+w1um+eh7iM4Zc+QgHuvgSG41MwythrrNxBt6z8LHcjZwIBIB6nr0?= =?us-ascii?Q?6ibKHzFnnuoYxocll7pjYxcyclmfmB0at0XNhwqmft8rgnS5kN+MjqW6X83G?= =?us-ascii?Q?aGriWGdEUMNF0rENIQmdzmayiM1e7qHK/UYE30tVZcz1rpebSkY0hmQwNaRC?= =?us-ascii?Q?oY2Ekl/Ybhqx1I+Y830qoP4rsxl0r9dz3xubQBYm6CUdXr+gSFx/xBEbbrXX?= =?us-ascii?Q?USCl8o/bnWarUm3VdbMi98uWg0ZB1+XN1oFTYV4ceB1+zFeGmgfcxQ94h9oR?= =?us-ascii?Q?VzI+nfgM23EhlMVMPpXWbn9+tBGTet/9KSPdSsAai1cX7XZiEhNp9yRKkoDv?= =?us-ascii?Q?kplWFOwjQar5vg5u4DAe40XaNqtxi6nKBPEqTB4Erc1YAmJpvw9pvV8IXOsi?= =?us-ascii?Q?k+bpZFOu10j1cosV1imkF4sS8Sak0cMsr0t6hutf/dG4S0XKPk8PE4V7VgjJ?= =?us-ascii?Q?ueSZ7qpkIv7WYSMaVQteEL8YN/OnHly0bVRjEBn7ZxT6LQBJKkYQK16gLGIg?= =?us-ascii?Q?2yTY0iUjbW+mWTyFCwcGvalMmW8XH5zM+GaFl53sKLy5ocMSOJnmvuqlfTnH?= =?us-ascii?Q?NnLXfkG4uSK/3mffPwaPpXlel5OpGpzqfml+zcP035lRXoavDDvVv4FETg0k?= =?us-ascii?Q?YovCh/12FzVfPHGYSsp59QGBZC/vVFYE4MNB9KVbV+td7NsyaQ/Kc6g1ksEq?= =?us-ascii?Q?Tvy2wL6p23AbmRrtR3Or7ZcFcp87MFP9uDZbzH7Re89NGGO9NkyTC87THkWz?= =?us-ascii?Q?8mJZu8FbdjYLE4ja3KRCzcQa/CAYMBzW9mVfB0YRHQGWHXGroZ8HbkLI6J6I?= =?us-ascii?Q?H0l9d460gy03Z3UEvCGPjnPl36+oqFYUcqL/AoNg/FTYW9JvwPua670ifCY0?= =?us-ascii?Q?R+DWmTICS7OMdxDNWSAd5pTbpZHaLCQMqlTXWzqnrYRcJPMe68VPv1u0bxVD?= =?us-ascii?Q?xR8fVaBMgPzscaZAxGGdGycfAMuedYqlgrNK4ygfHxz/L/d00vIk738Yqvvt?= =?us-ascii?Q?8jBZkifugJn5LdaqaGmyoX8zqQsPmgpUlw39N3qHk5F5RHhkXla4yIt4ux60?= =?us-ascii?Q?5gSZ5JXlHr0Lfhz97E8DtZM9muMjxLKdkK8DZwqlJtdVR7Xf83JjYYvHRcxZ?= =?us-ascii?Q?zFQSfJ44oi5bbwCL83d5lWbSFaeNEj3OitKeEb/l?= X-OriginatorOrg: nutanix.com X-MS-Exchange-CrossTenant-Network-Message-Id: 8ec00104-f45f-4353-15b9-08ddaf35bf1f X-MS-Exchange-CrossTenant-AuthSource: CH2PR02MB6760.namprd02.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 19 Jun 2025 13:32:33.4398 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: bb047546-786f-4de1-bd75-24e5b6f79043 X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: lfwN7cf0OqjbHZDqmD7QMyHY2xLZtDVFixExdgUhTZH1BvzXaZVp/Fdfe1AeQ1/lxYYGTjOfoiGaGr1nf88xTA== X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH0PR02MB9383 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUwNjE5MDExMyBTYWx0ZWRfX6KtQwpf8KPqI C51IxbRZSw6JP6m85Dbk5s/VFSHmbB6POJbgnaDfC34Z4VuKulwtfoEmuKNFhNxMkWSuy8g+HuD mOYY7eTdf/Lvgjgkb4ygaNUqzsb1bNPNZRSPiwE3UWyln0qi89fmwnoAmWkeZPac+tibIEEM6Md qwgftUR8+k0HvBHRoEXQIb9DIkPOJAYaDFU4PEGX18JfmaOBexNSpTp4igzSLJIjIMGv67fKnuY cIw0pK6WIjbGNstPY5S6MOhBmN51ythpjZdfhtycUxD7CimAhGf4MTCsYm5EJSDSObCwzXuN0sb FfMQa+evIuP6ynBKWsYNXDrMZoCO0ydX2O1LC06qiVNaqLFQSFrfhAwV+UCs/LYMBXhOV1/30aA d4WR2Qi/X40Nu5qBdP8iu8RT6PLO9XYSYcyz1cwSRySN/t5iCLD9Vgae7sp061nmwbVi1zf3 X-Authority-Analysis: v=2.4 cv=RcqQC0tv c=1 sm=1 tr=0 ts=6854117a cx=c_pps a=b9bpObgcEOTp51h0EtjbnQ==:117 a=6eWqkTHjU83fiwn7nKZWdM+Sl24=:19 a=lCpzRmAYbLLaTzLvsPZ7Mbvzbb8=:19 a=wKuvFiaSGQ0qltdbU6+NXLB8nM8=:19 a=Ol13hO9ccFRV9qXi2t6ftBPywas=:19 a=xqWC_Br6kY4A:10 a=6IFa9wvqVegA:10 a=0kUYKlekyDsA:10 a=yPCof4ZbAAAA:8 a=64Cc0HZtAAAA:8 a=vgBDHfCE-WenxT7XOAUA:9 X-Proofpoint-ORIG-GUID: J7DoYLeYUycfWMV2Cq1eMrtUHo5VM9DD X-Proofpoint-GUID: J7DoYLeYUycfWMV2Cq1eMrtUHo5VM9DD X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1099,Hydra:6.0.736,FMLib:17.12.80.40 definitions=2025-06-19_05,2025-06-18_03,2025-03-28_01 X-Proofpoint-Spam-Reason: safe Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=148.163.155.12; envelope-from=john.levon@nutanix.com; helo=mx0b-002c1b01.pphosted.com X-Spam_score_int: -46 X-Spam_score: -4.7 X-Spam_bar: ---- X-Spam_report: (-4.7 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-1.897, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H2=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@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-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @nutanix.com) X-ZM-MESSAGEID: 1750340321874116600 Content-Type: text/plain; charset="utf-8" Unlike most other messages, this is a server->client message, for when a server wants to do "DMA"; this is slow, so normally the server has memory directly mapped instead. Originally-by: John Johnson Signed-off-by: Elena Ufimtseva Signed-off-by: Jagannathan Raman Signed-off-by: John Levon --- hw/vfio-user/protocol.h | 13 ++++- hw/vfio-user/proxy.h | 3 ++ hw/vfio-user/pci.c | 111 ++++++++++++++++++++++++++++++++++++++++ hw/vfio-user/proxy.c | 84 ++++++++++++++++++++++++++++++ 4 files changed, 210 insertions(+), 1 deletion(-) diff --git a/hw/vfio-user/protocol.h b/hw/vfio-user/protocol.h index 524f3d633a..3e9d8e576b 100644 --- a/hw/vfio-user/protocol.h +++ b/hw/vfio-user/protocol.h @@ -200,7 +200,18 @@ typedef struct { char data[]; } VFIOUserRegionRW; =20 -/*imported from struct vfio_bitmap */ +/* + * VFIO_USER_DMA_READ + * VFIO_USER_DMA_WRITE + */ +typedef struct { + VFIOUserHdr hdr; + uint64_t offset; + uint32_t count; + char data[]; +} VFIOUserDMARW; + +/* imported from struct vfio_bitmap */ typedef struct { uint64_t pgsize; uint64_t size; diff --git a/hw/vfio-user/proxy.h b/hw/vfio-user/proxy.h index a9a36e4110..2712a55463 100644 --- a/hw/vfio-user/proxy.h +++ b/hw/vfio-user/proxy.h @@ -101,6 +101,7 @@ void vfio_user_set_handler(VFIODevice *vbasedev, bool vfio_user_validate_version(VFIOUserProxy *proxy, Error **errp); =20 VFIOUserFDs *vfio_user_getfds(int numfds); +void vfio_user_putfds(VFIOUserMsg *msg); =20 void vfio_user_request_msg(VFIOUserHdr *hdr, uint16_t cmd, uint32_t size, uint32_t flags); @@ -109,5 +110,7 @@ void vfio_user_send_wait(VFIOUserProxy *proxy, VFIOUser= Hdr *hdr, VFIOUserFDs *fds, int rsize); void vfio_user_send_nowait(VFIOUserProxy *proxy, VFIOUserHdr *hdr, VFIOUserFDs *fds, int rsize); +void vfio_user_send_reply(VFIOUserProxy *proxy, VFIOUserHdr *hdr, int size= ); +void vfio_user_send_error(VFIOUserProxy *proxy, VFIOUserHdr *hdr, int erro= r); =20 #endif /* VFIO_USER_PROXY_H */ diff --git a/hw/vfio-user/pci.c b/hw/vfio-user/pci.c index 49d12763ab..040660d197 100644 --- a/hw/vfio-user/pci.c +++ b/hw/vfio-user/pci.c @@ -9,6 +9,7 @@ #include #include "qemu/osdep.h" #include "qapi-visit-sockets.h" +#include "qemu/error-report.h" =20 #include "hw/qdev-properties.h" #include "hw/vfio/pci.h" @@ -80,6 +81,95 @@ static void vfio_user_msix_teardown(VFIOPCIDevice *vdev) vdev->msix->pba_region =3D NULL; } =20 +static void vfio_user_dma_read(VFIOPCIDevice *vdev, VFIOUserDMARW *msg) +{ + PCIDevice *pdev =3D &vdev->pdev; + VFIOUserProxy *proxy =3D vdev->vbasedev.proxy; + VFIOUserDMARW *res; + MemTxResult r; + size_t size; + + if (msg->hdr.size < sizeof(*msg)) { + vfio_user_send_error(proxy, &msg->hdr, EINVAL); + return; + } + if (msg->count > proxy->max_xfer_size) { + vfio_user_send_error(proxy, &msg->hdr, E2BIG); + return; + } + + /* switch to our own message buffer */ + size =3D msg->count + sizeof(VFIOUserDMARW); + res =3D g_malloc0(size); + memcpy(res, msg, sizeof(*res)); + g_free(msg); + + r =3D pci_dma_read(pdev, res->offset, &res->data, res->count); + + switch (r) { + case MEMTX_OK: + if (res->hdr.flags & VFIO_USER_NO_REPLY) { + g_free(res); + return; + } + vfio_user_send_reply(proxy, &res->hdr, size); + break; + case MEMTX_ERROR: + vfio_user_send_error(proxy, &res->hdr, EFAULT); + break; + case MEMTX_DECODE_ERROR: + vfio_user_send_error(proxy, &res->hdr, ENODEV); + break; + case MEMTX_ACCESS_ERROR: + vfio_user_send_error(proxy, &res->hdr, EPERM); + break; + default: + error_printf("vfio_user_dma_read unknown error %d\n", r); + vfio_user_send_error(vdev->vbasedev.proxy, &res->hdr, EINVAL); + } +} + +static void vfio_user_dma_write(VFIOPCIDevice *vdev, VFIOUserDMARW *msg) +{ + PCIDevice *pdev =3D &vdev->pdev; + VFIOUserProxy *proxy =3D vdev->vbasedev.proxy; + MemTxResult r; + + if (msg->hdr.size < sizeof(*msg)) { + vfio_user_send_error(proxy, &msg->hdr, EINVAL); + return; + } + /* make sure transfer count isn't larger than the message data */ + if (msg->count > msg->hdr.size - sizeof(*msg)) { + vfio_user_send_error(proxy, &msg->hdr, E2BIG); + return; + } + + r =3D pci_dma_write(pdev, msg->offset, &msg->data, msg->count); + + switch (r) { + case MEMTX_OK: + if ((msg->hdr.flags & VFIO_USER_NO_REPLY) =3D=3D 0) { + vfio_user_send_reply(proxy, &msg->hdr, sizeof(msg->hdr)); + } else { + g_free(msg); + } + break; + case MEMTX_ERROR: + vfio_user_send_error(proxy, &msg->hdr, EFAULT); + break; + case MEMTX_DECODE_ERROR: + vfio_user_send_error(proxy, &msg->hdr, ENODEV); + break; + case MEMTX_ACCESS_ERROR: + vfio_user_send_error(proxy, &msg->hdr, EPERM); + break; + default: + error_printf("vfio_user_dma_write unknown error %d\n", r); + vfio_user_send_error(vdev->vbasedev.proxy, &msg->hdr, EINVAL); + } +} + /* * Incoming request message callback. * @@ -87,7 +177,28 @@ static void vfio_user_msix_teardown(VFIOPCIDevice *vdev) */ static void vfio_user_pci_process_req(void *opaque, VFIOUserMsg *msg) { + VFIOPCIDevice *vdev =3D opaque; + VFIOUserHdr *hdr =3D msg->hdr; + + /* no incoming PCI requests pass FDs */ + if (msg->fds !=3D NULL) { + vfio_user_send_error(vdev->vbasedev.proxy, hdr, EINVAL); + vfio_user_putfds(msg); + return; + } =20 + switch (hdr->command) { + case VFIO_USER_DMA_READ: + vfio_user_dma_read(vdev, (VFIOUserDMARW *)hdr); + break; + case VFIO_USER_DMA_WRITE: + vfio_user_dma_write(vdev, (VFIOUserDMARW *)hdr); + break; + default: + error_printf("vfio_user_pci_process_req unknown cmd %d\n", + hdr->command); + vfio_user_send_error(vdev->vbasedev.proxy, hdr, ENOSYS); + } } =20 /* diff --git a/hw/vfio-user/proxy.c b/hw/vfio-user/proxy.c index 315f5fd350..198217565b 100644 --- a/hw/vfio-user/proxy.c +++ b/hw/vfio-user/proxy.c @@ -359,6 +359,10 @@ static int vfio_user_recv_one(VFIOUserProxy *proxy) *msg->hdr =3D hdr; data =3D (char *)msg->hdr + sizeof(hdr); } else { + if (hdr.size > proxy->max_xfer_size + sizeof(VFIOUserDMARW)) { + error_setg(&local_err, "vfio_user_recv request larger than max= "); + goto err; + } buf =3D g_malloc0(hdr.size); memcpy(buf, &hdr, sizeof(hdr)); data =3D buf + sizeof(hdr); @@ -673,6 +677,33 @@ void vfio_user_send_wait(VFIOUserProxy *proxy, VFIOUse= rHdr *hdr, qemu_mutex_unlock(&proxy->lock); } =20 +/* + * async send - msg can be queued, but will be freed when sent + */ +static void vfio_user_send_async(VFIOUserProxy *proxy, VFIOUserHdr *hdr, + VFIOUserFDs *fds) +{ + VFIOUserMsg *msg; + int ret; + + if (!(hdr->flags & (VFIO_USER_NO_REPLY | VFIO_USER_REPLY))) { + error_printf("vfio_user_send_async on sync message\n"); + return; + } + + QEMU_LOCK_GUARD(&proxy->lock); + + msg =3D vfio_user_getmsg(proxy, hdr, fds); + msg->id =3D hdr->id; + msg->rsize =3D 0; + msg->type =3D VFIO_MSG_ASYNC; + + ret =3D vfio_user_send_queued(proxy, msg); + if (ret < 0) { + vfio_user_recycle(proxy, msg); + } +} + void vfio_user_wait_reqs(VFIOUserProxy *proxy) { VFIOUserMsg *msg; @@ -717,6 +748,59 @@ void vfio_user_wait_reqs(VFIOUserProxy *proxy) qemu_mutex_unlock(&proxy->lock); } =20 +/* + * Reply to an incoming request. + */ +void vfio_user_send_reply(VFIOUserProxy *proxy, VFIOUserHdr *hdr, int size) +{ + + if (size < sizeof(VFIOUserHdr)) { + error_printf("vfio_user_send_reply - size too small\n"); + g_free(hdr); + return; + } + + /* + * convert header to associated reply + */ + hdr->flags =3D VFIO_USER_REPLY; + hdr->size =3D size; + + vfio_user_send_async(proxy, hdr, NULL); +} + +/* + * Send an error reply to an incoming request. + */ +void vfio_user_send_error(VFIOUserProxy *proxy, VFIOUserHdr *hdr, int erro= r) +{ + + /* + * convert header to associated reply + */ + hdr->flags =3D VFIO_USER_REPLY; + hdr->flags |=3D VFIO_USER_ERROR; + hdr->error_reply =3D error; + hdr->size =3D sizeof(*hdr); + + vfio_user_send_async(proxy, hdr, NULL); +} + +/* + * Close FDs erroneously received in an incoming request. + */ +void vfio_user_putfds(VFIOUserMsg *msg) +{ + VFIOUserFDs *fds =3D msg->fds; + int i; + + for (i =3D 0; i < fds->recv_fds; i++) { + close(fds->fds[i]); + } + g_free(fds); + msg->fds =3D NULL; +} + static QLIST_HEAD(, VFIOUserProxy) vfio_user_sockets =3D QLIST_HEAD_INITIALIZER(vfio_user_sockets); =20 --=20 2.43.0