From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from AM0PR02CU008.outbound.protection.outlook.com (mail-westeuropeazon11023073.outbound.protection.outlook.com [52.101.72.73]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D9C093FB7EB; Fri, 24 Jul 2026 11:46:00 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=fail smtp.client-ip=52.101.72.73 ARC-Seal:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784893562; cv=fail; b=uOSCUF8TfduF5k2qIUnD9jYsrS2Zv9RPiy8/AClYxBqRvfr2aytioDZg3+NE9423OLeG+YP7rBkVmYLwZ0wZYs6j1YJxm9LRHjme364U1snybbYVX1VL54xw7u7Mo+xgwx3pobsMuBjK1YVRjRviEomQFiyYRCJncrMZHXqx57E= ARC-Message-Signature:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784893562; c=relaxed/simple; bh=5tWMT/eHwstytUBwaJkIBU9kWzMznSeLsDDMxWaY04o=; h=From:To:Cc:Subject:Date:Message-ID:Content-Type:MIME-Version; b=UdEhcNYZpGj0iSHwBrRYmBgo2gB9YZ3kUmEgZCV7lgrLhD/Z5ZFUicK3eM/OHZgA+UoatpMWsbac0JkiBOOJkO9ujkwzHhRz5hQLFc/wMm+cU58fMXe0mQnO4OAGj9KMskSTzDlV5ib1QURXZimCeWftQfzeXAAlIlcJmVLcHGM= ARC-Authentication-Results:i=2; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=virtuozzo.com; spf=pass smtp.mailfrom=virtuozzo.com; dkim=pass (2048-bit key) header.d=virtuozzo.com header.i=@virtuozzo.com header.b=iBKD0hp8; arc=fail smtp.client-ip=52.101.72.73 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=virtuozzo.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=virtuozzo.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=virtuozzo.com header.i=@virtuozzo.com header.b="iBKD0hp8" ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=aKQg403LrF8oa1iVpmhTeXNLIq/8VcO09rsY+j7Kq6l8HKvYsaRZk077sAiMOpYNQ88/4eLOqE8PDGR/no9Wn01HUtRihiYy15x2Teqq2B+uU955zfSf9N5Got5VxRwotZmfEMJBccIny70Mv2/xlSbxfbgSOswzJasn4PcXzEhxNSY3gI13cbkV8iDoBr5kxl/50DIDKc44kxgSJuryaNNYseeRlJJPwB6nBQFL+oiwN+n8PFKMv9CzsDPYv/VhMQEucfR23OzjG0iUAuhtMmgWoZwxhiKSWEUssYAInzn/YmyRhicNt5xB+yFsbruhESZIKVdLEROJJ2i4WI80pg== 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=I99/fXRTh6PBsfikJse4Vli9N6zT8wmzzFmscsAgmVA=; b=tbcXjwN9HIxEgSAe8K3KUH63PVS6vmAE/FyJF6pT0q4XA2KTVbkx1MdAHXq/3cmXS4SLBGqQzBZVNc7SYpA6GtzomWEbO1la/DCLIESHHFPjpV4OSDaURudqZmzTwwn+dA39MpzSi4mjmk0hrE/w4KoCCgWyrEYoBvD4svRP9CxpzATdlzhWrNOiYPadbxnfsx6y3NrmqzB1uPcB6Kz5fs2O2dFFIfXYl08kk0XThxwZVibfsOs9R9gHTKoqwOLXs0FwSToO+DVi83OJEEecTlGQPPX7wsgv0qJ7pPJOXxRHbfrQOq4a675DwQZbCijzM+yQHW8GFgiW/TmSDufxxQ== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=virtuozzo.com; dmarc=pass action=none header.from=virtuozzo.com; dkim=pass header.d=virtuozzo.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=virtuozzo.com; s=selector2; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=I99/fXRTh6PBsfikJse4Vli9N6zT8wmzzFmscsAgmVA=; b=iBKD0hp8jwZzH2PGCsXtJ3L7oTGjZivA3liwKezTyel9xMncFcW5K4s7J4NTyfBUBPMp0NdK591RZO9sPrXF4Nz2RemHhY0rLKRq+SlTwLJhu9MXhRTqzO8/L7Y1xavYhFtaN5cVSvwhbbT3B4iu9fdJ8meHIiJBIqyz7UD7ZFZbXejtElx3h3TEHfhLGZGY8rTGOq5iYR6lPWsEmGbKV+9N9nuqBot+G3Fbtc70479YbEul0xxFN65wOsH70431gIf4W0qCZg4nA7FXw5O7osvPkXhIfUnkiBG+bEB7NnzLD+7hw/dttDi5K4SzWn7tFESwRc4UIYwRVw5ntOihww== Authentication-Results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=virtuozzo.com; Received: from VI0PR08MB10656.eurprd08.prod.outlook.com (2603:10a6:800:20a::12) by VI0PR08MB11775.eurprd08.prod.outlook.com (2603:10a6:800:311::13) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.21.245.11; Fri, 24 Jul 2026 11:45:51 +0000 Received: from VI0PR08MB10656.eurprd08.prod.outlook.com ([fe80::4e37:b189:ddcd:3dd8]) by VI0PR08MB10656.eurprd08.prod.outlook.com ([fe80::4e37:b189:ddcd:3dd8%7]) with mapi id 15.21.0245.010; Fri, 24 Jul 2026 11:45:51 +0000 From: Andrey Drobyshev To: linux-kernel@vger.kernel.org Cc: kvm@vger.kernel.org, virtualization@lists.linux.dev, netdev@vger.kernel.org, sgarzare@redhat.com, mst@redhat.com, stefanha@redhat.com, dongli.zhang@oracle.com, maciej.szmigiero@oracle.com, bchaney@akamai.com, mark.kanda@oracle.com, ptikhomirov@virtuozzo.com, den@openvz.org, andrey.drobyshev@virtuozzo.com Subject: [PATCH v6 0/5] vhost/vsock: add support for VHOST_RESET_OWNER and CPR migration Date: Fri, 24 Jul 2026 14:45:37 +0300 Message-ID: <20260724114542.734623-1-andrey.drobyshev@virtuozzo.com> X-Mailer: git-send-email 2.47.1 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-ClientProxiedBy: VI1P190CA0001.EURP190.PROD.OUTLOOK.COM (2603:10a6:802:2b::14) To VI0PR08MB10656.eurprd08.prod.outlook.com (2603:10a6:800:20a::12) Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: VI0PR08MB10656:EE_|VI0PR08MB11775:EE_ X-MS-Office365-Filtering-Correlation-Id: 47babc9a-28d3-45a0-b9fc-08dee9791c87 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|23010399003|376014|7416014|52116014|1800799024|366016|56012099006|10067099003|18002099003|38350700014; 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:VI0PR08MB10656.eurprd08.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230040)(23010399003)(376014)(7416014)(52116014)(1800799024)(366016)(56012099006)(10067099003)(18002099003)(38350700014);DIR:OUT;SFP:1102; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?us-ascii?Q?A5RqXO2zNDBHlCyDCvv0zqPzqOxQp8QanIDdz/shNfK2h087zMagu95hvVbI?= =?us-ascii?Q?HLpPrF8L2qM2k6uHeYLwhMjUvFzFEwhabPgAmN1DC/vXV+n6xuBWEZv4iT+U?= =?us-ascii?Q?sSWKwcJR9A1O0phBnC8PJFBWmKgJKOhnAIc5M6us5JmKgqp5l7HEmDWVYL9K?= =?us-ascii?Q?+3UdbVyIdUCZ85EoP1pQ69Nt2qUwlNlgzaho+asNy5XY+hKWHVB+QITEk/x3?= =?us-ascii?Q?5n/HQXEV/m0SK8qbyCnduZA3LGsKEorU0FNl1D04qwJ47bEoxNwZ95fzy6LQ?= =?us-ascii?Q?HLATNhvyZbi453CYE/R8caceUmn44gNn655he9DRuHCcHFMhvfBL7fgOVGEc?= =?us-ascii?Q?EG9zREIZU+JDd9Hl05Cy/zqGSQgIzAf7rJgCyWI3q4XX5aKHIDYOT8hVlvrQ?= =?us-ascii?Q?DFRfZL01ZfovZdFN+G0Fmvgn2aGFrRgtontvq5fk0AWn6BzdyE/lf/B7v9zU?= =?us-ascii?Q?GhFpUaBod+9K3nVAQ57BnQr/HJ/d/CNkl5h2pbgo66JplTdH/usw6IfI7rWv?= =?us-ascii?Q?bhJ85GBZj7NspNaVq1OQIbZjKTM/lE9okt9uGQ98O18JKGNqUv6E+Z2IFsDg?= =?us-ascii?Q?0pB25wBhGGBqRItM/Vk6lbB3wo/A+hfxnHqpDejqMplxWi4eHqcYVVy3fs04?= =?us-ascii?Q?saUomRmcHehItsCl3hVig9HVyjGvY4Eo23cIhvWz3rlhGLdlv0UByjM0Dfwl?= =?us-ascii?Q?yJV2/WITejpKuwkpgY5gjngB9cAjks3H3Fj3o1DJJzC23KgbeuGfdLYqmVDp?= =?us-ascii?Q?PscsqGK8vMkq3hAQManUKn6V+mLNxAhEey2RDvrplCGmErLCFlGxgL4Un2ov?= =?us-ascii?Q?FUm10Q8bWao/UPGWXCCJ5aN0UhH01XckV+vfAM2/yLQZGr1FNgZO3SRjCtyP?= =?us-ascii?Q?DTgJT9sYRBhIhM4Z92yRoBD333DvwHwtiTTY/19E+osV5+5slaReHdqO+LPA?= =?us-ascii?Q?bgMxh7pbqHfhnS4tONtHP8onVkcjfGvkCiiXM8+SmwaNtKo0rEKq3f1N7nc5?= =?us-ascii?Q?0DviFgPQOzQtwj6AHaMM1aPVjMy2JHPevOqkmczevRyrzZiiqKnNGLkdUCYG?= =?us-ascii?Q?C7IEeRmF26j5ErWL1scgYFryooZQiPDiEF0NUC6LT9SZmO59V5hKlZ2s8SVz?= =?us-ascii?Q?dxf0Xf7jCxhvVOpbzIQRZIx1HnWyzumP3udPnk3JlazFNfgNnxucqHrYcjwb?= =?us-ascii?Q?PfBSB0D+bxZjshQh/aRZzG76oSoLpyposNiGLUPMSRyz5OW7Rbt6+GDPYcGt?= =?us-ascii?Q?w+VbBWOwNTqtfi3jryAJDOOQhrIDOV70oftFHmGuhXWShgShouExZYIz5ZlA?= =?us-ascii?Q?DtJoSziT5FLEYn0zRYZn8AAsosUq1GRNntq4Sz+p5+tk44CIVGmVU/0tHgXi?= =?us-ascii?Q?1b7k9SHB1K7+MFqwNmIV0zYNiqbnmOltVJto5jROHiQDAiOA1ZhcLJDAeUvw?= =?us-ascii?Q?ESEVHZnezIq0bBZkX280c6ytSsDQtKqaSYZb9SBQRJPGY34IRRMZo3s5/Anv?= =?us-ascii?Q?rPzAnBfL/36A4hvBte/BnVnHG5Dl5FRpaIG9IrR7sjU30gewCtyxbTNFoI0H?= =?us-ascii?Q?kXe/Acnq7xKOEqpay+C7s2VbPvj9GuK1GS0VIMSBsiKayqxENrHbyynZUJmY?= =?us-ascii?Q?q5SNNJlMjZNko+Y1bShZUXj+VTL0tdSlg2dFZlC5EcaPwLNNAENqC7Jm//pt?= =?us-ascii?Q?9pt5SJxcfUUQNo7TtCUL9j4o48+Hxi6LFz+VdBSTPhUFqn+SgVkm4hJGCVXn?= =?us-ascii?Q?Y3nYSWapZNr2FeDXjgBopcA0Phhw9vo=3D?= X-OriginatorOrg: virtuozzo.com X-MS-Exchange-CrossTenant-Network-Message-Id: 47babc9a-28d3-45a0-b9fc-08dee9791c87 X-MS-Exchange-CrossTenant-AuthSource: VI0PR08MB10656.eurprd08.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 24 Jul 2026 11:45:51.4117 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 0bc7f26d-0264-416e-a6fc-8352af79c58f X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: 5pCceeWix1CC+arFh+W0Yn+hKYdK01bqA3HGehrRQxKcpR5iA39SH8oOHGfKWjoGyi1Gu09aBLG3SlBOLmut0dd9/WlmpaoHBgTcqYyduZM= X-MS-Exchange-Transport-CrossTenantHeadersStamped: VI0PR08MB11775 v5 -> v6: * Patch 4: - make sync+flush conditional by adding a bool 'sync' param to the chain, as suggested by Michael: vhost_dev_reset_owner() vhost_dev_cleanup() vhost_workers_free() - reword commit message and comment; - drop Fixes; * Patch 5: - add 'sync' param to vhost_dev_reset_owner() call. v5: https://lore.kernel.org/virtualization/20260720102241.371610-1-andrey.drobyshev@virtuozzo.com Andrey Drobyshev (3): vhost/vsock: suppress EHOSTUNREACH fast-fail during CPR pause vhost/vsock: re-scan TX virtqueue on device start vhost: synchronize with RCU readers when freeing workers Pavel Tikhomirov (2): vhost/vsock: split out vhost_vsock_drop_backends helper vhost/vsock: add VHOST_RESET_OWNER ioctl drivers/vhost/net.c | 4 +- drivers/vhost/scsi.c | 2 +- drivers/vhost/test.c | 4 +- drivers/vhost/vdpa.c | 4 +- drivers/vhost/vhost.c | 26 ++++++++++--- drivers/vhost/vhost.h | 5 ++- drivers/vhost/vsock.c | 89 +++++++++++++++++++++++++++++++++---------- 7 files changed, 100 insertions(+), 34 deletions(-) -- 2.47.1