From nobody Sat Apr 11 18:38:01 2026 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=1775811505; cv=pass; d=zohomail.com; s=zohoarc; b=DG2glcagqzPWKQ6sFCUmunAPUXoXpiGKrCjEjnA8oQ5a7VahoYVsCVH2U7wmXf/JEDFtLorFjbXPhLYkJ9Ln3PpZX3eSQs032eGoIVgVmHskOI6KimvQQE2PqT6Gc3d/nlye78syJzEyTxQNLOqkZ+fUyRSN8WeeKiTFvkW1Bu8= ARC-Message-Signature: i=2; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1775811505; 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=geXBTcFkUK4cPRoKb8fpHXGO2hmlo/SzoMwzOyCpLOI=; b=BIWktEEqMH2pxVYTWYiqGk4qEh70D1qaZ8Vb/TTiYVekhLru1ZDBcgf7SrNH1zgwT1rJV/wScfrCLocXFR2BwTfzp4uMhOWlT5PqpXBPxeyObIsoki7BkpFKI8Dn2/Hl5C+erkb1qABh5TexhjKVpWOmSBQU+CVSo/anWySgjIY= 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 (lists1p.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1775811505392497.43468488702615; Fri, 10 Apr 2026 01:58:25 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1wB7g9-0004c8-GR; Fri, 10 Apr 2026 04:57:29 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists1p.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1wB7g8-0004b0-68 for qemu-devel@nongnu.org; Fri, 10 Apr 2026 04:57:28 -0400 Received: from mx0a-002c1b01.pphosted.com ([148.163.151.68]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1wB7g6-0003HT-4i for qemu-devel@nongnu.org; Fri, 10 Apr 2026 04:57:27 -0400 Received: from pps.filterd (m0127840.ppops.net [127.0.0.1]) by mx0a-002c1b01.pphosted.com (8.18.1.11/8.18.1.11) with ESMTP id 63A6DD1W2662394; Fri, 10 Apr 2026 01:57:23 -0700 Received: from dm5pr21cu001.outbound.protection.outlook.com (mail-centralusazon11021083.outbound.protection.outlook.com [52.101.62.83]) by mx0a-002c1b01.pphosted.com (PPS) with ESMTPS id 4def2k1re1-1 (version=TLSv1.3 cipher=TLS_AES_256_GCM_SHA384 bits=256 verify=NOT); Fri, 10 Apr 2026 01:57:23 -0700 (PDT) Received: from CH2PR02MB6760.namprd02.prod.outlook.com (2603:10b6:610:7f::9) by IA1PR02MB9256.namprd02.prod.outlook.com (2603:10b6:208:424::16) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.9769.17; Fri, 10 Apr 2026 08:57:21 +0000 Received: from CH2PR02MB6760.namprd02.prod.outlook.com ([fe80::dbc1:9766:c58d:4887]) by CH2PR02MB6760.namprd02.prod.outlook.com ([fe80::dbc1:9766:c58d:4887%6]) with mapi id 15.20.9769.035; Fri, 10 Apr 2026 08:57:21 +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=geXBTcFkUK4cPRoKb8fpHXGO2hmlo/SzoMwzOyCpL OI=; b=b4X5DVhTMK44ZFpNZOBYeNC6E7Pk0PnAqRKsHdZw6WyZo9Mn/luj3/+QG SeO+M2fJRcOqLwS3V6DD6KIoadAbIxIB7IO5y5oBS3FizMWZYtuyqBZumK0YMnhp RKuc3iGDrEtl9CSSuMPW24zZoIoSvt1QQDvA9b27gRSVmTbT6yxOT9xYUI4FITrg CoppocwZ6se2nMNX6rDyJf/zpiXHIptCyhlodJpKw+Qu7xQ4I5BHmVyj2GlT0Uob oNd+L5ivqHcfmdAxuh0FLTjKpiTOb7PsKcs/og4z/aPyATT9IKqjwZJEEMBRVJk1 vRfdG98XJGWkx8yZh40z2O1mI8P3w== ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=MNp3Xy9KHwGE+pLq+hj2qQ1EnRaVOXVm4mzjKjbHExgv/B8YOAM0oUqYWXZrKEwGRIUeHqNYW1AMj5PZXzFogmhHL7oZKLJ7KInmSASp71VZW2FeBoDsXEZtf0WvHiuDPapOvD2n0chBdjXSbstxrMkeA5o2nB/D8IielE0QxBTbAXJ2CJEIibgy3bUeiDKv4TZX96y5LZLx4ds3eHAHtAJOP5HK/uR/S4thtaN1FrzG+EsQrmjzIvXTMwx5ZhAkx/1xfENoarzZ0oSYUpYs/ZRcfM44Y2w0jT66Wv6MtdvBNtwRwUTJUJWiYAUZWK7MPbakVk3y5g1ai6Y4kLLYtw== 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=geXBTcFkUK4cPRoKb8fpHXGO2hmlo/SzoMwzOyCpLOI=; b=WfjKpdtBY7xMk+rnVpAPIF6y8XyvCh1leBqNUWm4bM28TpLoeGfUPoNOC2ZpGHHfOnBL4W2a/3NNNkzcWgGX+2YLRPLLlnE7/NJqbxg5G48jBqKtI4KHjLKuMTZLcZW6zhaXSaGCv79VmfYjCNydGZBv1pQSrnzhHXn0r714yDXGAIbJ3FdaBCFgxvck/zC4dVw6NAQ2RerwwraOv92km5Yg8wc+A8M4yp/SJy5igldn9Yer9qHHkUDnRpL4OQGoO4VgeIvCP+rD+tr9yuSjYCCMfzbwpfMqc7shSRZO8TUb5VQcH89l2TlCtn97Tz2rHJbQbvOb8uke6g5ARVD+vA== 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=geXBTcFkUK4cPRoKb8fpHXGO2hmlo/SzoMwzOyCpLOI=; b=d7Ap2uFJsZxq4eX4MZC9Sy1gqQ08714VSOULFdekExg4lFUYLr/7zLZ7MqS7UQfR1FfA+CwLGRMhvhFAsBQM8cpejrxvHn26zqaPz/PQYu9DVmF3+dqE9N4dA72vCFJRqFlk2x+AAv56vXG1gNyXJhYGo4gf9Mlwi1G47Q7DhQH/lhH+mVZ9hBlYGELiu3nfQFe0Ev2FI8SpDzuvb3dezkcsyoUmXEsf4/ECN8gGrJ0FU+qpqfxSz8ItEsSZyspYd9wZG5uu7QJN/6Nnpv5vQemTI9CC4ghF8afFyc2E9KaiBJJjt17W1u4hLeShTXfvAfNhGhFWCeBdTSbGulyxhg== From: John Levon To: qemu-devel@nongnu.org Cc: Pierrick Bouvier , Thanos Makatos , =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= , John Levon Subject: [PATCH v2 1/3] vfio-user: support VFIO_USER_DEVICE_FEATURE Date: Fri, 10 Apr 2026 09:57:14 +0100 Message-ID: <20260410085716.877185-2-john.levon@nutanix.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260410085716.877185-1-john.levon@nutanix.com> References: <20260410085716.877185-1-john.levon@nutanix.com> Content-Transfer-Encoding: quoted-printable X-ClientProxiedBy: LO2P265CA0404.GBRP265.PROD.OUTLOOK.COM (2603:10a6:600:f::32) To CH2PR02MB6760.namprd02.prod.outlook.com (2603:10b6:610:7f::9) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CH2PR02MB6760:EE_|IA1PR02MB9256:EE_ X-MS-Office365-Filtering-Correlation-Id: a4f9b01a-d38b-4e2f-bdae-08de96df2d35 x-proofpoint-crosstenant: true X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; ARA:13230040|366016|1800799024|376014|18002099003|22082099003|56012099003; X-Microsoft-Antispam-Message-Info: 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 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)(366016)(1800799024)(376014)(18002099003)(22082099003)(56012099003); DIR:OUT; SFP:1102; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?us-ascii?Q?nM+OQQCWpoCzmnQTkIVUOPDHmHrArHdazLzhs1ebV3hSPfXxfEy1o4Gr9P9/?= =?us-ascii?Q?pp4lIkPEk/2LKkFhdeuuuB6q0FNA0mrcpdKVY8OmAdRHE3y/MflHtJasl6Sz?= =?us-ascii?Q?TorBXVU8rYFVmoqFVUz5Tg0olJIXqIkh4qTlf6BdYmAh5D9dZz5CZB5Uckvo?= =?us-ascii?Q?csX6z3bfYkJG2CPyHtK2tGyC2gxHCFrnXZZk0b8IMgu2hgVNgrYmVIa+w0yh?= =?us-ascii?Q?iWFeuHdobxgeZEjVFrC8dFmeHcMXub/wDtYfSEdePXArriVqRij55ZtHTAbA?= =?us-ascii?Q?ONSOvH3nAtCGO/hDjh+FBdUM2OK/cG0wzHEmOV9yRWNdZl2ccWbteEJKz7Tq?= =?us-ascii?Q?M6YECYj54bL4mjNUHq2gJI4ElvUUAu+WT279vRFDi6oNxcrmfY7tRj1qoYXw?= =?us-ascii?Q?E1V1OAl4tx79Uh6gz+3x5eD1s1ilKNHkd6SMzz5kjEYOUzaorK5sXqiE9Nn7?= =?us-ascii?Q?4U765y/Z3sXbwQqeZogmpEK7bAhbFXWhetCm8T5IDHdRPqG4fw9K24sImEJP?= =?us-ascii?Q?KdWV0mUUFhE1xKTazNWmqxVIDf4WrpoogAXdRktoVymubv61MrCipf0Y2p/W?= =?us-ascii?Q?OoHITyAnIE7fJuhzZrItw7egzq1xv9aTcjq0K7iDf1S1iyDNgVg/q+4R/Rr6?= =?us-ascii?Q?IqF67KnXzvR2rFUO+VWteM+kvEaxv8w7ZpTzESTA+JBGW7KF5GLDWf43Z4/0?= =?us-ascii?Q?h6ho5P3JAO9L/Jola+4tV46I9PEXoFrDYP9GOn6Sw189VKsbCDkrXhRnOaTT?= =?us-ascii?Q?PzkWGQNbfIdrLWwAni0mVtVDqKMT7J4c5ig3p62UtKrIhQSERmlhdvEhdm9A?= =?us-ascii?Q?O1ZSqDqFPuT2ldTmiAA2b5FwbJpnsEQq8YdBnHuXviNpiqFJhGNLekdEY3xA?= =?us-ascii?Q?W2PHa08UtSCiAxBPSGiDSEDEy2/DP4a9TM74w8EviyPmAwg6AOURLhdnAGu8?= =?us-ascii?Q?qkpu+t0n5d7pZZI8Te71jQXOvNkDWgFHCdFu80FmZl8i+VtH6o61EsQbjHPb?= =?us-ascii?Q?3+5uNzwvDT2GvrryJ7rRlB2h0uQRfh6UVdPMBjgWDpYeP2lTp4bD1bgWQPte?= =?us-ascii?Q?sB8Ha1QKNxfEH8QvKSzOG7o8NSbIxCXFBzk1zvtaB3dHj96SgJuCWHPR64FI?= =?us-ascii?Q?0l3p6eelb69EPHnToifCQ++bclOtZQFrB99Jwp5ISRc9VgDjPrBAZ1aCCTN4?= =?us-ascii?Q?WL+cHxp6B1Khd2w1X5L1aObSZbRcvCCdXh3g5TRJLH5K0iBEI/oNfhO3YuXu?= =?us-ascii?Q?l4ugXbY5sny7ez70Y6YyWYBo7cAnilXeZm+avBMJORb+UPg0lfMcmTJ8mDF8?= =?us-ascii?Q?DgBXBHJxqmSlnRMr6zlEB8K+tQBsrGOlNpt7TjNByT7NzJ2OKd9QZtz7FYv8?= =?us-ascii?Q?YbhGYSBzyxuKIldeHCDoGqXz33f0inaLP1+U+Jnd82yYtWq8HsfCtmuKTci/?= =?us-ascii?Q?EXtQcUN+HKOweq8D001ahYNvyFm4xiKkAHGWc34Dtq5MwVCJSPfimCjqLbj4?= =?us-ascii?Q?u68yORNl42XT8wR5YLLitEjLGNmUe5BCYgwgrujBIlhbqdt9i3uXzANRMkno?= =?us-ascii?Q?e/yznXIKd8c/MD/ZYjgs6USv2jAA0BU/xvw0X6RmeuUgdT6pLpRDas5q4nkj?= =?us-ascii?Q?axvZ2UFnBQcNHp3b0wPWPA4KcZYA1c+nTfADtscY7A+2hQy0V5Jyq6govHHz?= =?us-ascii?Q?deGtgSGqutzVJbnvcgT0EHYH6HTJfMrD1ApoNjzIPr9a52UZ1uHVks7VMIgB?= =?us-ascii?Q?5GT/4BSBTA=3D=3D?= X-Exchange-RoutingPolicyChecked: YcD6MZSMCONWw8x+BbjvbCs8vtVU7+5wNb6ZTXc7ud9QVhiGoQClBIVVkmdwPUExg0uYpwGnRDgtzLW/JmPbIfj33LZso0MaTzIemMDO8Du+eaec7uXvVSbJcukbAXcjFKJK5rosiDQt1MeUSIqR+huQiJs2TAiynb6qgUYHR2/RQbdgexFufpYVFqTDr+jBwOX0BHsK6MO+Cqhmt45KHKpz4oBxJkzwWDYSfNKRS8kPH8RWWCAfB7xqu6F3M351UkFL3+ONQF+HjxtetKhQ9wLOWdtIP1PQvKewLSM40BRAFhZ0c4WTbLCgflCGh7VCqyK87rOXOaNGiCoU4h6V4Q== X-OriginatorOrg: nutanix.com X-MS-Exchange-CrossTenant-Network-Message-Id: a4f9b01a-d38b-4e2f-bdae-08de96df2d35 X-MS-Exchange-CrossTenant-AuthSource: CH2PR02MB6760.namprd02.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 10 Apr 2026 08:57:21.5085 (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: zj1bcJsjxxv07c6Cr8UZC7hLao57ZEsZRTwwGq6NCXE2EsDIy4cS7VLl46Orjheiab7vpXxJiiLWcuGeRoE+Lw== X-MS-Exchange-Transport-CrossTenantHeadersStamped: IA1PR02MB9256 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNDEwMDA4MiBTYWx0ZWRfX8eTD7LIQwxOv Jq/SXnVqwnJippXHF69UzxmkNGT8IzFbnjWyvJ/TfxBXDBfK+WgzV/0uduUlyiY+Yws25sI1wC2 NB1UfP+Ktp4x5YgHMvt0LI8zTYSA9p9/C0wqbEqvj527PfpAKVkyvPWGxEsA87j61WaUVvPdxLQ 0/zLhbDaTQR9/aeYls0UYF7i9Q+ADWN8fZPXTeWCuYhVgMj/moM7lXsyR0Ne5gTbsyaymet0GxH jxkcyxO0O0ELEfP088T5fShFdcEw5s1nINT0IbnsXP7MpXUrZUOFODLDRqdr6nchDWkPCmU6qfu yP+3IXdbJiB0tkqSVLr2+xO8ZbVLsrbrO2OEou5mWGNAIToscokivRorK8b3K55I88dNQRPCvIx a1cbKJFTGhJyTAn61jFqrKPcDilETJq6DCfpc0cGl3AMWjZVdo9fHyIGQIply3Ty0MKHx2UbgE6 a5hkXwkgxm5iG15DZ6A== X-Proofpoint-ORIG-GUID: Av4Mngm7XN31zF3rFlykTrzmNoS94q4l X-Authority-Analysis: v=2.4 cv=fKgJG5ae c=1 sm=1 tr=0 ts=69d8bb73 cx=c_pps a=f6P8eh4LYcQUHlEOLA+94w==:117 a=6eWqkTHjU83fiwn7nKZWdM+Sl24=:19 a=z/mQ4Ysz8XfWz/Q5cLBRGdckG28=:19 a=lCpzRmAYbLLaTzLvsPZ7Mbvzbb8=:19 a=xqWC_Br6kY4A:10 a=A5OVakUREuEA:10 a=0kUYKlekyDsA:10 a=VkNPw1HP01LnGYTKEx00:22 a=VofLwUrZ8Iiv6rRUPXIb:22 a=_-M8LpHI31CeLmyZm6wg:22 a=64Cc0HZtAAAA:8 a=P6-GAGG-IN1-BGcB38EA:9 X-Proofpoint-GUID: Av4Mngm7XN31zF3rFlykTrzmNoS94q4l X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.51,FMLib:17.12.100.49 definitions=2026-04-10_02,2026-04-09_02,2025-10-01_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=148.163.151.68; envelope-from=john.levon@nutanix.com; helo=mx0a-002c1b01.pphosted.com X-Spam_score_int: -32 X-Spam_score: -3.3 X-Spam_bar: --- X-Spam_report: (-3.3 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.54, 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_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: qemu development 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: 1775811506537158500 Content-Type: text/plain; charset="utf-8" Plumb through vfio_device_get_feature to the vfio-user server. Note that we translate EINVAL into ENOTTY, as the existing generic vfio code is expecting the latter to mean "unsupported". As part of adding a trace point, clean up the trace file. Signed-off-by: John Levon --- hw/vfio-user/protocol.h | 12 +++++++++++ hw/vfio-user/device.c | 42 +++++++++++++++++++++++++++++++++++++++ hw/vfio-user/trace-events | 23 +++++++++++---------- 3 files changed, 67 insertions(+), 10 deletions(-) diff --git a/hw/vfio-user/protocol.h b/hw/vfio-user/protocol.h index 3249a4a6b6..2a0c31e7c5 100644 --- a/hw/vfio-user/protocol.h +++ b/hw/vfio-user/protocol.h @@ -40,6 +40,7 @@ enum vfio_user_command { VFIO_USER_DEVICE_RESET =3D 13, VFIO_USER_DIRTY_PAGES =3D 14, VFIO_USER_REGION_WRITE_MULTI =3D 15, + VFIO_USER_DEVICE_FEATURE =3D 16, VFIO_USER_MAX, }; =20 @@ -239,4 +240,15 @@ typedef struct { VFIOUserWROne wrs[VFIO_USER_MULTI_MAX]; } VFIOUserWRMulti; =20 +/* + * VFIO_USER_DEVICE_FEATURE + * imported from struct vfio_device_feature + */ +typedef struct { + VFIOUserHdr hdr; + uint32_t argsz; + uint32_t flags; + char data[]; +} VFIOUserDeviceFeature; + #endif /* VFIO_USER_PROTOCOL_H */ diff --git a/hw/vfio-user/device.c b/hw/vfio-user/device.c index 64ef35b320..b8d2b7c1a8 100644 --- a/hw/vfio-user/device.c +++ b/hw/vfio-user/device.c @@ -74,6 +74,47 @@ void vfio_user_device_reset(VFIOUserProxy *proxy) } } =20 +static int +vfio_user_device_io_device_feature(VFIODevice *vbasedev, + struct vfio_device_feature *feature) +{ + g_autofree VFIOUserDeviceFeature *msgp =3D NULL; + int size =3D sizeof(VFIOUserHdr) + feature->argsz; + VFIOUserProxy *proxy =3D vbasedev->proxy; + Error *local_err =3D NULL; + + msgp =3D g_malloc0(size); + + vfio_user_request_msg(&msgp->hdr, VFIO_USER_DEVICE_FEATURE, size, 0); + + memcpy(&msgp->argsz, &feature->argsz, feature->argsz); + + if (!vfio_user_send_wait(proxy, &msgp->hdr, NULL, size, &local_err)) { + error_prepend(&local_err, "%s: ", __func__); + error_report_err(local_err); + return -EFAULT; + } + + if (msgp->hdr.flags & VFIO_USER_ERROR) { + /* + * Client expects ENOTTY for "not supported", but the protocol may + * return EINVAL (which should only occur in the case the feature = isn't + * actually supported on the server). + */ + if (msgp->hdr.error_reply =3D=3D EINVAL) { + return -ENOTTY; + } + + return -msgp->hdr.error_reply; + } + + memcpy(feature, &msgp->argsz, feature->argsz); + + trace_vfio_user_device_io_device_feature(msgp->argsz, msgp->flags); + + return 0; +} + static int vfio_user_get_region_info(VFIOUserProxy *proxy, struct vfio_region_info *info, VFIOUserFDs *fds) @@ -432,6 +473,7 @@ static int vfio_user_device_io_region_write(VFIODevice = *vbasedev, uint8_t index, * Socket-based io_ops */ VFIODeviceIOOps vfio_user_device_io_ops_sock =3D { + .device_feature =3D vfio_user_device_io_device_feature, .get_region_info =3D vfio_user_device_io_get_region_info, .get_irq_info =3D vfio_user_device_io_get_irq_info, .set_irqs =3D vfio_user_device_io_set_irqs, diff --git a/hw/vfio-user/trace-events b/hw/vfio-user/trace-events index abb67f4c11..503e1c82d4 100644 --- a/hw/vfio-user/trace-events +++ b/hw/vfio-user/trace-events @@ -2,19 +2,22 @@ # # SPDX-License-Identifier: GPL-2.0-or-later =20 -# common.c +# container.c +vfio_user_dma_map(uint64_t iova, uint64_t size, uint64_t off, uint32_t fla= gs, bool async_ops) " iova 0x%"PRIx64" size 0x%"PRIx64" off 0x%"PRIx64" fla= gs 0x%x async_ops %d" +vfio_user_dma_unmap(uint64_t iova, uint64_t size, uint32_t flags, bool as= ync_ops) " iova 0x%"PRIx64" size 0x%"PRIx64" flags 0x%x async_ops %d" + +# device.c +vfio_user_device_io_device_feature(uint32_t argsz, uint32_t flags) " argsz= 0x%x flags 0x%x" +vfio_user_get_info(uint32_t nregions, uint32_t nirqs) " #regions %d #irqs = %d" +vfio_user_get_irq_info(uint32_t index, uint32_t flags, uint32_t count) " i= ndex %d flags 0x%x count %d" +vfio_user_set_irqs(uint32_t index, uint32_t start, uint32_t count, uint32_= t flags) " index %d start %d count %d flags 0x%x" +vfio_user_get_region_info(uint32_t index, uint32_t flags, uint64_t size) "= index %d flags 0x%x size 0x%"PRIx64 +vfio_user_region_rw(uint32_t region, uint64_t off, uint32_t count) " regio= n %d offset 0x%"PRIx64" count %d" + +# proxy.c vfio_user_recv_hdr(const char *name, uint16_t id, uint16_t cmd, uint32_t s= ize, uint32_t flags) " (%s) id 0x%x cmd 0x%x size 0x%x flags 0x%x" vfio_user_recv_read(uint16_t id, int read) " id 0x%x read 0x%x" vfio_user_recv_request(uint16_t cmd) " command 0x%x" vfio_user_send_write(uint16_t id, int wrote) " id 0x%x wrote 0x%x" vfio_user_version(uint16_t major, uint16_t minor, const char *caps) " majo= r %d minor %d caps: %s" -vfio_user_get_info(uint32_t nregions, uint32_t nirqs) " #regions %d #irqs = %d" -vfio_user_get_region_info(uint32_t index, uint32_t flags, uint64_t size) "= index %d flags 0x%x size 0x%"PRIx64 -vfio_user_region_rw(uint32_t region, uint64_t off, uint32_t count) " regio= n %d offset 0x%"PRIx64" count %d" -vfio_user_get_irq_info(uint32_t index, uint32_t flags, uint32_t count) " i= ndex %d flags 0x%x count %d" -vfio_user_set_irqs(uint32_t index, uint32_t start, uint32_t count, uint32_= t flags) " index %d start %d count %d flags 0x%x" vfio_user_wrmulti(const char *s, uint64_t wr_cnt) " %s count 0x%"PRIx64 - -# container.c -vfio_user_dma_map(uint64_t iova, uint64_t size, uint64_t off, uint32_t fla= gs, bool async_ops) " iova 0x%"PRIx64" size 0x%"PRIx64" off 0x%"PRIx64" fla= gs 0x%x async_ops %d" -vfio_user_dma_unmap(uint64_t iova, uint64_t size, uint32_t flags, bool as= ync_ops) " iova 0x%"PRIx64" size 0x%"PRIx64" flags 0x%x async_ops %d" --=20 2.43.0