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 smtp1.osuosl.org (smtp1.osuosl.org [140.211.166.138]) (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 888DBC77B7F for ; Tue, 16 May 2023 16:25:15 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp1.osuosl.org (Postfix) with ESMTP id 16FA6820EC; Tue, 16 May 2023 16:25:15 +0000 (UTC) DKIM-Filter: OpenDKIM Filter v2.11.0 smtp1.osuosl.org 16FA6820EC Authentication-Results: smtp1.osuosl.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=oracle.com header.i=@oracle.com header.a=rsa-sha256 header.s=corp-2023-03-30 header.b=m7/kFZiW; dkim=fail reason="signature verification failed" (1024-bit key) header.d=oracle.onmicrosoft.com header.i=@oracle.onmicrosoft.com header.a=rsa-sha256 header.s=selector2-oracle-onmicrosoft-com header.b=hx1eedQj X-Virus-Scanned: amavisd-new at osuosl.org Received: from smtp1.osuosl.org ([127.0.0.1]) by localhost (smtp1.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id MRt-PC42AjC4; Tue, 16 May 2023 16:25:13 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [IPv6:2605:bc80:3010:104::8cd3:938]) by smtp1.osuosl.org (Postfix) with ESMTPS id 381F781FFE; Tue, 16 May 2023 16:25:13 +0000 (UTC) DKIM-Filter: OpenDKIM Filter v2.11.0 smtp1.osuosl.org 381F781FFE Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id EDFE2C0036; Tue, 16 May 2023 16:25:12 +0000 (UTC) Received: from smtp3.osuosl.org (smtp3.osuosl.org [IPv6:2605:bc80:3010::136]) by lists.linuxfoundation.org (Postfix) with ESMTP id 550B6C002A for ; Tue, 16 May 2023 16:25:12 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp3.osuosl.org (Postfix) with ESMTP id 1ABE060AC9 for ; Tue, 16 May 2023 16:25:12 +0000 (UTC) DKIM-Filter: OpenDKIM Filter v2.11.0 smtp3.osuosl.org 1ABE060AC9 Authentication-Results: smtp3.osuosl.org; dkim=pass (2048-bit key) header.d=oracle.com header.i=@oracle.com header.a=rsa-sha256 header.s=corp-2023-03-30 header.b=m7/kFZiW; dkim=pass (1024-bit key) header.d=oracle.onmicrosoft.com header.i=@oracle.onmicrosoft.com header.a=rsa-sha256 header.s=selector2-oracle-onmicrosoft-com header.b=hx1eedQj X-Virus-Scanned: amavisd-new at osuosl.org Received: from smtp3.osuosl.org ([127.0.0.1]) by localhost (smtp3.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id Wq-GHweNndEN for ; Tue, 16 May 2023 16:25:10 +0000 (UTC) X-Greylist: domain auto-whitelisted by SQLgrey-1.8.0 DKIM-Filter: OpenDKIM Filter v2.11.0 smtp3.osuosl.org CA4CD60745 Received: from mx0a-00069f02.pphosted.com (mx0a-00069f02.pphosted.com [205.220.165.32]) by smtp3.osuosl.org (Postfix) with ESMTPS id CA4CD60745 for ; Tue, 16 May 2023 16:25:09 +0000 (UTC) Received: from pps.filterd (m0246617.ppops.net [127.0.0.1]) by mx0b-00069f02.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 34GG4HHQ024776; Tue, 16 May 2023 16:24:54 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.com; h=message-id : date : subject : to : cc : references : from : in-reply-to : content-type : content-transfer-encoding : mime-version; s=corp-2023-03-30; bh=zMiy3wc6+2aah3369sgh6Hof2vKztLSRE5c9HDt6kHU=; b=m7/kFZiWNk2XcVLo6T8lCIfx0zh6M2alWeZ3PTK0Rzx+N+mMFfyULAwjYNoBp1DNLnSc IiQclr9cUu9Czu78whDwHDMBSPpsQsdM+YK1rENKT2iLrs5cgly7VhZ6uFQLWuaZTTRm 39usvj0o2/As3NyirOgSoMMibeHmIvg2J6jEAd/Jj2KESwnv76gOfllduRcVSvviEMVw JJlpewVZuOsuu3Yxd0RFUxp5FR25b3vC0YCupixoxwYjnLODIfGT9GQRIgHQ0F/3ldb5 AYhf4LconHxOT7gWlhjqw5+V8RMW+DWBVhCi552+s+6hQw6dHiz4Uy+wnMUHplw0Rxm3 pw== Received: from phxpaimrmta01.imrmtpd1.prodappphxaev1.oraclevcn.com (phxpaimrmta01.appoci.oracle.com [138.1.114.2]) by mx0b-00069f02.pphosted.com (PPS) with ESMTPS id 3qj33uu7k1-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 16 May 2023 16:24:53 +0000 Received: from pps.filterd (phxpaimrmta01.imrmtpd1.prodappphxaev1.oraclevcn.com [127.0.0.1]) by phxpaimrmta01.imrmtpd1.prodappphxaev1.oraclevcn.com (8.17.1.19/8.17.1.19) with ESMTP id 34GFMs4Y039953; Tue, 16 May 2023 16:24:53 GMT Received: from nam11-co1-obe.outbound.protection.outlook.com (mail-co1nam11lp2177.outbound.protection.outlook.com [104.47.56.177]) by phxpaimrmta01.imrmtpd1.prodappphxaev1.oraclevcn.com (PPS) with ESMTPS id 3qj10425hy-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 16 May 2023 16:24:53 +0000 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=ShItUuLDfXw1HEJddlkEGkN/QjBP4SEZbm+6QJowO+/3hWA/BBEZ7ZfBFFj3neb8+sIvj9PC0Zn4+C+U3o3wExkRTBfzoNdone9yZYHZ9rOWE0c2f3fAZ/jIEDeeYJ+HXI/A2YudyQ2gAslvLfe/l6ddLg7H2qbOU9TUoyKz/WLVBLedEL1Pg1JBLAF5sVtuZrq+olpUtJUmY+9igiLGUQJBEofw3ACI/JRLgZr73L8HfL7Kol+2Z8QQ1yikOJu85+z8fyec58sRS4qD6oSKdPuR3QM5nHDQmaispq91ze64nqm4QHGVJgk9h9V52PU0pWpctx5NnRqt3/W5bEfMfA== 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=zMiy3wc6+2aah3369sgh6Hof2vKztLSRE5c9HDt6kHU=; b=UCFxC68Q5d5kZjfxvC+lCHaMqHRc+fIZ/Dq8JlPEsSzPO0j/sd+uUetCW3vanDNi1gT3N7IOyD8hmHj3YGa5U+Usn615B4hZtq99kxRKw0sWnFCtFHUy8aMWHDuLDz09+FEAA/OrooQM2/NRji23k1qc2p4KJAyCkWBQsYpsqQR0qNEUJ+IgQ/6UjgNC4dKvfBu+Ln0J88hhMFHxknrUz2YtLqKpyYlLYDPxli5Aaxts/AH9Fv4BgF+pXd0V+7EF6SHwZPum8lFjL/28fL4778Yptkq4mu25v9j5eWNJfYDqc5A4/R3at8GerJ7xugPjVowWZtu3ONVGG5i2DRvheg== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=oracle.com; dmarc=pass action=none header.from=oracle.com; dkim=pass header.d=oracle.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.onmicrosoft.com; s=selector2-oracle-onmicrosoft-com; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=zMiy3wc6+2aah3369sgh6Hof2vKztLSRE5c9HDt6kHU=; b=hx1eedQjLsLx0vHf5nVumdm1RgHR3Gp3N5O/ar9jQ7LaRwrQ6ffVCDTLUw/q4iBTcEmAKxpjg/iJ/eBzOmKsAobqSakwl5i8M0yHyP5SHrEnC63ouQjwUPdSdRp6D9flLf2OQGvgI/q/+VJ8JDDtrirpJIbyJucWnxTbMY3jMg0= Received: from CY8PR10MB7243.namprd10.prod.outlook.com (2603:10b6:930:7c::10) by SN7PR10MB6641.namprd10.prod.outlook.com (2603:10b6:806:2ac::22) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6387.24; Tue, 16 May 2023 16:24:50 +0000 Received: from CY8PR10MB7243.namprd10.prod.outlook.com ([fe80::13d6:c3f3:2447:6559]) by CY8PR10MB7243.namprd10.prod.outlook.com ([fe80::13d6:c3f3:2447:6559%5]) with mapi id 15.20.6387.030; Tue, 16 May 2023 16:24:50 +0000 Message-ID: <683d0c30-4aeb-3547-49a9-90ce6eb1a7d0@oracle.com> Date: Tue, 16 May 2023 11:24:48 -0500 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.10.1 Subject: Re: [PATCH v11 8/8] vhost: use vhost_tasks for worker threads Content-Language: en-US To: Christian Brauner , Linus Torvalds References: <20230202232517.8695-1-michael.christie@oracle.com> <20230202232517.8695-9-michael.christie@oracle.com> <78c5e150-26cf-7724-74ee-4a0b16b944b1@oracle.com> <48842e92-835e-bc3f-7118-48b8f415f532@leemhuis.info> <20230515-vollrausch-liebgeworden-2765f3ca3540@brauner> <122b597e-a5fa-daf7-27bb-6f04fa98d496@oracle.com> <20230516-weltmeere-backofen-27f12ae2c9e0@brauner> From: Mike Christie In-Reply-To: <20230516-weltmeere-backofen-27f12ae2c9e0@brauner> X-ClientProxiedBy: DM6PR08CA0032.namprd08.prod.outlook.com (2603:10b6:5:80::45) To CY8PR10MB7243.namprd10.prod.outlook.com (2603:10b6:930:7c::10) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CY8PR10MB7243:EE_|SN7PR10MB6641:EE_ X-MS-Office365-Filtering-Correlation-Id: 46b9e564-7c34-4956-1568-08db562a1281 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:255.255.255.255; CTRY:; LANG:en; SCL:1; SRV:; IPV:NLI; SFV:NSPM; H:CY8PR10MB7243.namprd10.prod.outlook.com; PTR:; CAT:NONE; SFS:(13230028)(396003)(346002)(136003)(366004)(39860400002)(376002)(451199021)(38100700002)(36756003)(31696002)(86362001)(5660300002)(7416002)(8936002)(8676002)(2616005)(316002)(6506007)(26005)(53546011)(6512007)(66476007)(66556008)(110136005)(54906003)(66946007)(478600001)(6486002)(31686004)(4326008)(186003)(41300700001)(2906002)(83380400001)(43740500002)(45980500001); DIR:OUT; SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?utf-8?B?QzhzdXNCRmNkcUJvZitRc28zVk1FNFNSN1FxTm83OElCY0FJVkN1NEJZK25R?= =?utf-8?B?K2o5Y1piVnpiYTZMNEQ1L0w3amlObUxUL29KN1RWbTdwUHBXcmtkZlVkS0Rn?= =?utf-8?B?T3p0b1pBUHhqMEZXWWdPZ1RFdXh3a3lYRERwNkFFZEtJOG9lNWZkU0lqRmJ2?= =?utf-8?B?dEJkS2lPVzltWVZ6SFlsamJDYyt0RHpWSGN5SjUyMHU1d3IzK1ZYc2RtR0Vq?= =?utf-8?B?YlR6YUZNRDBOcEpWOGRvcXhkRERsa2NFWUdiY0xEQXRxdVpxelhMSnV6WmQw?= =?utf-8?B?eS9sVnFoUklsWUNKVFN1Z1h6T1RYTTlLT3FoUDlmRmVUQllBcDByMlBFbUdV?= =?utf-8?B?NEZGQjBMNlNIazFRclpmK3A3QUFSeUFhelk5K0J5NE9MUzY0Y3p2M2J3eWph?= =?utf-8?B?SHBzZ3doR2NCbVJtNHBTcWdudHYvM2F3cHRWVkh5REVRU09GMjlLakVDbzh3?= =?utf-8?B?bGE2UlNUZUhqdTJFZ1REZTZJVXpOelBpb1dyaEF2ZnRkc2o1Rm9mZXZlanNF?= =?utf-8?B?emFFNldzalNuNk8wTmhFSCtnb0MxdHZ4dXlIQkU3N09vS3lmQmR1RW1KSHdZ?= =?utf-8?B?Y2I5aUF4T2ZoTllXOEFhTDY5MG9QSlF5RExIeWY5b2ZCOEdxU1ppMG1heUVr?= =?utf-8?B?c3hGWjZGaFo1V0ZTcjM1Zk8wNmMwOXlhUkh1ZjAxMXRjVVF5RmdQUG82bUdk?= =?utf-8?B?QXRwVTRkV2xMaHpSd0xRbWJEZkNaaGRLYnFuY2lOT01WQ1RYSmR1YTF0aHNm?= =?utf-8?B?Z0QyRklIUGdoK0VXWmNJb3ppVG1aLzRxbzVJdlhGZWw3bWN0dkVQSiszMjBy?= =?utf-8?B?N0NSd0I2WmFXRlJkYWdTUUs2VWk4UFBRL1hqeTRDRUVhNGkvVWVJamowN3VP?= =?utf-8?B?ck90SUwwcUVnUHJrVHlwMVF5N25kZGIzUkl3Q3JnbVBtTU5ZZ2FTdEpaWk5t?= =?utf-8?B?L1lKK2F1ZzcvUStpdGxCcC9KYUw2TG9RdXJoZTdUZkI3UW9HVHJHdWNEQmdK?= =?utf-8?B?R3pOQnBZNkJQQWREUDg2NXNsSHFNeEZZTHdpRWl3SmlJL2VFM1I5ejh1NFY5?= =?utf-8?B?WTFlMGRvdDZQQWtuV1pBZlFvczQzcUhiWWRIZkVTb29PZ3NlOFQ5QmNBZkJB?= =?utf-8?B?N0xXQmVvWmQ5SDVYL1ZEam5HdXBvcStlOW9OZERObzdTb1FURVFqR2VWYjZa?= =?utf-8?B?R2VQZzE2aGNrVXJsajJYTEFVaWpSb1Nra0wwVFA1M2dxYWJ2R0kxWjhEdnFS?= =?utf-8?B?a3YxbmhMSVZTa1BGNk5EL29Iem9IdFUwWWRwNzZBd0V1d0JPbVQ3bFIwajJq?= =?utf-8?B?Ti9SUVhhZ1FvcTJTWGZWMFdXR285TVVoRFBkdEpmaEMxcVlRa0trbCtKcEow?= =?utf-8?B?cDBFU0lwTC9YQi9YR01pUEdVeUt6MmsyY2pGdnk5QUFGaGFmdTh3LzhMRjZF?= =?utf-8?B?SEtYelVUbGlFcmhqei9STnhJczlqb3dSZ2VKcStyOTZSUkUwV3h5VHJ3bFE2?= =?utf-8?B?Q0gxKzFGUFVLRzhra0FvZHkxeW03cU5mV1B0NFdyU2JEYzFjRS96R2IzbEZV?= =?utf-8?B?NHNyVWJWYms0MUhjM1FsUlFldWJlK3Nvd0E0STkrU0JibzRocFdSQ0VrOEJz?= =?utf-8?B?a3EvSzRUdi81d09EbzU5bWZQRWZRamd6Qko5YjNra2dkcVd4bGFRaUFBWW9i?= =?utf-8?B?MmtianF3NWNMc2FSRFlHVFZhTVF0L1krY0JxbmFhU0N5MVQxWmp2UVZaRjRv?= =?utf-8?B?ZXlpanFQeGIxeWdVSWJHbUx1MDgzek1YTURkeGFNY0tLWjBHRVVXamFreThk?= =?utf-8?B?K0czYXZFd0NkYWM1UHFpOW9obEFJRk9hYUxUUDFDVTE3S0NjRFgwdUtpL3lK?= =?utf-8?B?bXRCQWZWVWlKVEJTUVJDd1JCaEVzZGRVMXFIMFhKRlRBT09VOFJid3RxU0RO?= =?utf-8?B?NGtPS3dkQ0t6M05pNWlKSEVXQ2xsSnZNRVVjRzFPSk1PM21CSkRETUYrSk83?= =?utf-8?B?ZW5raUdjbzBWQjQwdGZVTHR6cTd1NGVXK2VUMXlqSkR1Z3ZHVXV4aE5hcDZy?= =?utf-8?B?eW92WmtWZDU5WGFEZXA0UENmcEdtVTV5NEtqbkNDQlFrcWxhcWdqdnFzY3Zw?= =?utf-8?B?b0ZTSUh0WENBMHladlhVanNYQ0NLTUtUWlFuUFlPT3hicHhPT2ttVVZpSFFl?= =?utf-8?B?cGc9PQ==?= X-MS-Exchange-AntiSpam-ExternalHop-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-ExternalHop-MessageData-0: =?utf-8?B?dWxZQm5aY1ZmajlVNHlGZmZZYkRnUVRhSGRkd0p3VUdxZThyTkRDVlZtYjAz?= =?utf-8?B?N0Z4QlpkNDdFV21MTXN3citsejNzaW5qZTJRcXhoWGM1bUJLZ2NDOXhHQ2Ez?= =?utf-8?B?WnlnSlU3RTVzcDF3d2dLZTcyT1l1MW1STE84MkF0MlBrbVBCekNJTmtVdEp6?= =?utf-8?B?SHVNMFloUGNMbFBIdnpMQk9MZWkvM1l1YWtwR1RhNEg3MnQyVnY1SHQrMFkw?= =?utf-8?B?ZUhCVkVUc3c2dXdpY05STUhpSTBKVk1DZnd1SlpsaEpUUmtkU2Y4U2lvWlBo?= =?utf-8?B?MTJmaHoxQ0ZBbHNBM3JqQjhHZUpqQytHUFJtdHZqU3lOMm5PNlRMaE9mRFNE?= =?utf-8?B?Rlk3djVBZTgyelBoSGp3YTI3RVlGOWlLYndybGkxeE81dEFiTWpsQ1F6b09H?= =?utf-8?B?Q1YrMzZOak1obGpKbTM3TDNmWnM0dGo3RXYzVWJsd0ZNZDNFZWE3OTlLbS8w?= =?utf-8?B?OThjWnJmVFpqMVErQ0ZFdW5zSHZlUmNWZUNxTDREQUxXbldkYW0zQTlONklK?= =?utf-8?B?SE5XV0E1ZzRMWUtYVGJhUkZlWGNKdjlORThHNklkUEJlRVhjOFR0MzNYWTg4?= =?utf-8?B?bzF0QktJTHQ4MkpDS0lValhjc2ZxMVl1WXFKemdOR3NpL0NGNnRMWEdvTGha?= =?utf-8?B?K2FvUVhmU3FTOTdQcXpZektIek5xMFpjVk0wZzZyd0JPY2hwUWtuQXZwcHVh?= =?utf-8?B?c1R6elNlQzNybHowY2cyb3RxUTZiSmtndVAyN3JtYUxLRjlrNXRvWnZyS0No?= =?utf-8?B?YzFDNzlaSGlBTmhsemlIcVBmbDJ1eDA1dGs2eEVJZXl1cmJGcFlKakk3TDQy?= =?utf-8?B?K3ZOM05FazV2N0VBUHpjRXgvNU95ZnAxbjhNV1Q0U0tQb014K1JKQzdDdUdp?= =?utf-8?B?UHdZUURLZkptZmx0aHdVa0J0QUJTUFZqajhOem5GcjFKUWJmdW80V2ZIbU1u?= =?utf-8?B?cUZwOGV3Ly96eXlTODJUL0JZc0xOZ3NaSG12THcxc1JDK25xdkFQY1o1Mnho?= =?utf-8?B?dnlhUGZWMkRMUHVzdnpZbTYwbXpBam1sU2dESmZMYXp3WVlFNXhpYkYvV0Jn?= =?utf-8?B?WWZzOFlrbHhCWWxlTG9vellLRkFFaUxieHp1SW9XWVZnMHFYYTByWTdSRGdu?= =?utf-8?B?ZFFoSFo1QThXZ2lqNmJZL1A0cUZVMFIxNE9ZVko3OFhrKzg4em9adCs3M1gx?= =?utf-8?B?Q2IrU2NONHJSWmdMRE5ITC9xeXpPaHEzaDduK3Rxb25Hd1lnZ3V6V3E3Mnls?= =?utf-8?B?OVVqQ1NWTU9XYkxwbklnc0FSWW9YeVlaSVN1QUNLWWZjK0xmUWF2SnBNclFJ?= =?utf-8?B?Z3FIRTRGazZkSEQ2elhZVisxWk4wVDEvSEJjaHZCa2k2OWxoVWN0Ujg4ZGJL?= =?utf-8?B?K2VKNWhLZFRFdkdxMG1aTmZKcENPK2gzbkd0TDJUdFpaSElVd3crWlNHdCts?= =?utf-8?B?L0I0bEpUYzJ1RUhtQWVPbGYxMDR5T0VRdzRuVmQ1M0M1TENuMDlBMnEvNTdV?= =?utf-8?B?bDdnMWpjTUxVVXNSKzhKRndaYjNtOXQrMXZNUWVwVzA2d01rWDcvWFN3M2dm?= =?utf-8?B?elNrQT09?= X-OriginatorOrg: oracle.com X-MS-Exchange-CrossTenant-Network-Message-Id: 46b9e564-7c34-4956-1568-08db562a1281 X-MS-Exchange-CrossTenant-AuthSource: CY8PR10MB7243.namprd10.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 16 May 2023 16:24:50.5509 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 4e2c6054-71cb-48f1-bd6c-3a9705aca71b X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: jLYC1o0KJO/TmeP6V7FT/MUyEE89nFEXhWRgiR93d2nY7L7yD7JbN2uuw1glvDfT/piqFEsXB1Yfh5kmJhVvXVONucNfLkHjq7u4S1BpCBM= X-MS-Exchange-Transport-CrossTenantHeadersStamped: SN7PR10MB6641 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.254,Aquarius:18.0.957,Hydra:6.0.573,FMLib:17.11.170.22 definitions=2023-05-16_08,2023-05-16_01,2023-02-09_01 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 suspectscore=0 adultscore=0 bulkscore=0 mlxscore=0 phishscore=0 malwarescore=0 spamscore=0 mlxlogscore=614 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2304280000 definitions=main-2305160139 X-Proofpoint-GUID: 3gRKZsDPWCF0oeKywT_2lB0eZZPhD0dm X-Proofpoint-ORIG-GUID: 3gRKZsDPWCF0oeKywT_2lB0eZZPhD0dm Cc: Jens Axboe , Linux kernel regressions list , mst@redhat.com, linux-kernel@vger.kernel.org, konrad.wilk@oracle.com, Thorsten Leemhuis , virtualization@lists.linux-foundation.org, hch@infradead.org, ebiederm@xmission.com, stefanha@redhat.com, nicolas.dichtel@6wind.com X-BeenThere: virtualization@lists.linux-foundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Linux virtualization List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: virtualization-bounces@lists.linux-foundation.org Sender: "Virtualization" T24gNS8xNi8yMyAzOjM5IEFNLCBDaHJpc3RpYW4gQnJhdW5lciB3cm90ZToKPiBPbiBNb24sIE1h eSAxNSwgMjAyMyBhdCAwNToyMzoxMlBNIC0wNTAwLCBNaWtlIENocmlzdGllIHdyb3RlOgo+PiBP biA1LzE1LzIzIDEwOjQ0IEFNLCBMaW51cyBUb3J2YWxkcyB3cm90ZToKPj4+IE9uIE1vbiwgTWF5 IDE1LCAyMDIzIGF0IDc6MjPigK9BTSBDaHJpc3RpYW4gQnJhdW5lciA8YnJhdW5lckBrZXJuZWwu b3JnPiB3cm90ZToKPj4+Pgo+Pj4+IFNvIEkgdGhpbmsgd2Ugd2lsbCBiZSBhYmxlIHRvIGFkZHJl c3MgKDEpIGFuZCAoMikgYnkgbWFraW5nIHZob3N0IHRhc2tzCj4+Pj4gcHJvcGVyIHRocmVhZHMg YW5kIGJsb2NraW5nIGV2ZXJ5IHNpZ25hbCBleGNlcHQgZm9yIFNJR0tJTEwgYW5kIFNJR1NUT1AK Pj4+PiBhbmQgdGhlbiBoYXZpbmcgdmhvc3QgaGFuZGxlIGdldF9zaWduYWwoKSAtIGFzIHlvdSBt ZW50aW9uZWQgLSB0aGUgc2FtZQo+Pj4+IHdheSBpbyB1cmluZyBhbHJlYWR5IGRvZXMuIFdlIHNo b3VsZCBhbHNvIHJlbW92ZSB0aGUgaW5nb3JlX3NpZ25hbHMKPj4+PiB0aGluZyBjb21wbGV0ZWx5 IGltaG8uIEkgZG9uJ3QgdGhpbmsgd2UgZXZlciB3YW50IHRvIGRvIHRoaXMgd2l0aCB1c2VyCj4+ Pj4gd29ya2Vycy4KPj4+Cj4+PiBSaWdodC4gVGhhdCdzIHdoYXQgSU9fVVJJTkcgZG9lczoKPj4+ Cj4+PiAgICAgICAgIGlmIChhcmdzLT5pb190aHJlYWQpIHsKPj4+ICAgICAgICAgICAgICAgICAv Kgo+Pj4gICAgICAgICAgICAgICAgICAqIE1hcmsgdXMgYW4gSU8gd29ya2VyLCBhbmQgYmxvY2sg YW55IHNpZ25hbCB0aGF0IGlzbid0Cj4+PiAgICAgICAgICAgICAgICAgICogZmF0YWwgb3IgU1RP UAo+Pj4gICAgICAgICAgICAgICAgICAqLwo+Pj4gICAgICAgICAgICAgICAgIHAtPmZsYWdzIHw9 IFBGX0lPX1dPUktFUjsKPj4+ICAgICAgICAgICAgICAgICBzaWdpbml0c2V0aW52KCZwLT5ibG9j a2VkLCBzaWdtYXNrKFNJR0tJTEwpfHNpZ21hc2soU0lHU1RPUCkpOwo+Pj4gICAgICAgICB9Cj4+ Pgo+Pj4gYW5kIEkgcmVhbGx5IHRoaW5rIHRoYXQgdmhvc3Qgc2hvdWxkIGJhc2ljYWxseSBkbyBl eGFjdGx5IHdoYXQgaW9fdXJpbmcgZG9lcy4KPj4+Cj4+PiBOb3QgYmVjYXVzZSBpb191cmluZyBm dW5kYW1lbnRhbGx5IGdvdCB0aGlzIHJpZ2h0IC0gYnV0IHNpbXBseSBiZWNhdXNlCj4+PiBpb191 cmluZyBoYWQgYWxtb3N0IGFsbCB0aGUgc2FtZSBidWdzIChhbmQgdGhlbiBzb21lKSwgYW5kIHdo YXQgdGhlCj4+PiBpb191cmluZyB3b3JrZXIgdGhyZWFkcyBlbmRlZCB1cCBkb2luZyB3YXMgdG8g YmFzaWNhbGx5IHpvb20gaW4gb24KPj4+ICJ0aGlzIHdvcmtzIi4KPj4+Cj4+PiBBbmQgaXQgem9v bWVkIGluIG9uIGl0IGxhcmdlbHkgYnkganVzdCBnb2luZyBmb3IgIm1ha2UgaXQgbG9vayBhcyBt dWNoCj4+PiBhcyBwb3NzaWJsZSBhcyBhIHJlYWwgdXNlciB0aHJlYWQiLCBiZWNhdXNlIGV2ZXJ5 IHRpbWUgdGhlIGtlcm5lbAo+Pj4gdGhyZWFkIGRpZCBzb21ldGhpbmcgZGlmZmVyZW50LCBpdCBq dXN0IGNhdXNlZCBwcm9ibGVtcy4KPj4+Cj4+PiBTbyBJIHRoaW5rIHRoZSBwYXRjaCBzaG91bGQg anVzdCBsb29rIHNvbWV0aGluZyBsaWtlIHRoZSBhdHRhY2hlZC4KPj4+IE1pa2UsIGNhbiB5b3Ug dGVzdCB0aGlzIG9uIHdoYXRldmVyIHZob3N0IHRlc3Qtc3VpdGU/Cj4+Cj4+IEkgdHJpZWQgdGhh dCBhcHByb2FjaCBhbHJlYWR5IGFuZCBpdCBkb2Vzbid0IHdvcmsgYmVjYXVzZSBpb191cmluZyBh bmQgdmhvc3QKPj4gZGlmZmVyIGluIHRoYXQgdmhvc3QgZHJpdmVycyBpbXBsZW1lbnQgYSBkZXZp Y2Ugd2hlcmUgZWFjaCBkZXZpY2UgaGFzIGEgdmhvc3RfdGFzawo+PiBhbmQgdGhlIGRyaXZlcnMg aGF2ZSBhIGZpbGVfb3BlcmF0aW9ucyBmb3IgdGhlIGRldmljZS4gV2hlbiB0aGUgdmhvc3RfdGFz aydzCj4+IHBhcmVudCBnZXRzIHNpZ25hbCBsaWtlIFNJR0tJTEwsIHRoZW4gaXQgd2lsbCBleGl0 IGFuZCBjYWxsIGludG8gdGhlIHZob3N0Cj4+IGRyaXZlcidzIGZpbGVfb3BlcmF0aW9ucy0+cmVs ZWFzZSBmdW5jdGlvbi4gQXQgdGhpcyB0aW1lLCB3ZSBuZWVkIHRvIGRvIGNsZWFudXAKPiAKPiBC dXQgdGhhdCdzIG5vIHJlYXNvbiB3aHkgdGhlIHZob3N0IHdvcmtlciBjb3VsZG4ndCBqdXN0IGJl IGFsbG93ZWQgdG8KPiBleGl0IG9uIFNJR0tJTEwgY2xlYW5seSBzaW1pbGFyIHRvIGlvX3VyaW5n LiBUaGF0J3MganVzdCBkZXNjcmliaW5nIHRoZQo+IGN1cnJlbnQgYXJjaGl0ZWN0dXJlIHdoaWNo IGlzbid0IGEgbmVjZXNzaXR5IGFmYWljdC4gQW5kIHRoZSBoZWxwZXIKPiB0aHJlYWQgY291bGQg ZS5nLiwgY3Jhc2guCj4gCj4+IGxpa2UgZmx1c2ggdGhlIGRldmljZSB3aGljaCB1c2VzIHRoZSB2 aG9zdF90YXNrLiBUaGVyZSBpcyBhbHNvIHRoZSBjYXNlIHdoZXJlIGlmCj4+IHRoZSB2aG9zdF90 YXNrIGdldHMgYSBTSUdLSUxMLCB3ZSBjYW4ganVzdCBleGl0IGZyb20gdW5kZXIgdGhlIHZob3N0 IGxheWVyLgo+IAo+IEluIGEgd2F5IEkgcmVhbGx5IGRvbid0IGxpa2UgdGhlIHBhdGNoIGJlbG93 LiBCZWNhdXNlIHRoaXMgc2hvdWxkIGJlCj4gc29sdmFibGUgYnkgYWRhcHRpbmcgdmhvc3Qgd29y a2Vycy4gUmlnaHQgbm93LCB2aG9zdCBpcyBjb21pbmcgZnJvbSBhCj4ga3RocmVhZCBtb2RlbCBh bmQgd2UgcG9ydGVkIGl0IHRvIGEgdXNlciB3b3JrZXIgbW9kZWwgYW5kIHRoZSB3aG9sZQo+IHBv aW50IG9mIHRoaXMgZXhjZXJjaXNlIGhhcyBiZWVuIHRoYXQgdGhlIHdvcmtlcnMgYmVoYXZlIG1v cmUgbGlrZQo+IHJlZ3VsYXIgdXNlcnNwYWNlIHByb2Nlc3Nlcy4gU28gbXkgdGVuZGVuY3kgaXMg dG8gbm90IG1hc3NhZ2Uga2VybmVsCj4gc2lnbmFsIGhhbmRsaW5nIHRvIG5vdyBhbHNvIGluY2x1 ZGUgYSBzcGVjaWFsIGNhc2UgZm9yIHVzZXIgd29ya2VycyBpbgo+IGFkZGl0aW9uIHRvIGt0aHJl YWRzLiBUaGF0J3MganVzdCB0aGUgd3Jvbmcgd2F5IGFyb3VuZCBhbmQgdGhlbiB2aG9zdAo+IGNv dWxkJ3ZlIGp1c3Qgc3R1Y2sgd2l0aCBrdGhyZWFkcyBpbiB0aGUgZmlyc3QgcGxhY2UuCgpJIHdv dWxkIGhhdmUgcHJlZmVycmVkIHRoYXQgOikgTWF5YmUgbGV0J3MgdGFrZSBhIHN0ZXAgYmFjayBh bmQgcmV2aXNpdAp0aGF0IGRlY2lzaW9uIHRvIG1ha2Ugc3VyZSBpdCB3YXMgcmlnaHQuIFRoZSB2 aG9zdCBsYXllciB3YW50czoKCjEuIGluaGVyaXQgY2dyb3Vwcy4KMi4gc2hhcmUgbW0uCjMuIG5v IHNpZ25hbHMKNC4gdG8gbm90IHNob3cgdXAgd2FzIGFuIGV4dHJhIHByb2Nlc3MgbGlrZSBpbiBO aWNvbGFzJ3MgYnVnLgo1LiBoYXZlIGl0J3Mgd29ya2VyIHRocmVhZHMgY291bnRlZCB1bmRlciBp dHMgcGFyZW50IG5wcm9jIGxpbWl0LgoKV2UgY2FuIGRvIDEgLSA0IHRvZGF5IHdpdGgga3RocmVh ZHMuIENhbiB3ZSBkbyAjNSB3aXRoIGt0aHJlYWRzPyBNeSBmaXJzdAphdHRlbXB0IHdoaWNoIHBh c3NlZCBhcm91bmQgdGhlIGNyZWRzIHRvIHVzZSBmb3Iga3RocmVhZHMgb3IgZXhwb3J0ZWQgYQpo ZWxwZXIgZm9yIHRoZSBucHJvYyBhY2NvdW50aW5nIHdhcyBub3QgbGlrZWQgYW5kIHdlIGV2ZW50 dWFsbHkgZW5kZWQgdXAKaGVyZS4KCklzIHRoaXMgaHliaXJkIHVzZXIva2VybmVsIHRocmVhZC90 YXNrIHN0aWxsIHRoZSByaWdodCB3YXkgdG8gZ28gb3IgaXMKYmV0dGVyIHRvIHVzZSBrdGhyZWFk cyBhbmQgYWRkIHNvbWUgd2F5IHRvIGhhbmRsZSAjNT8KCgo+IAo+IFNvIEknbSBmaW5lIHdpdGgg c2tpcHBpbmcgb3ZlciB0aGUgZnJlZXppbmcgY2FzZSBmb3Igbm93IGJ1dCBTSUdLSUxMCj4gc2hv dWxkIGJlIGhhbmRsZWQgaW1oby4gT25seSBpbml0IGFuZCBrdGhyZWFkcyBzaG91bGQgZ2V0IHRo ZSBsdXh1cnkgb2YKPiBpZ25vcmluZyBTSUdLSUxMLgo+IAo+IFNvLCBJJ20gYWZyYWlkIEknbSBh c2tpbmcgc29tZSB3b3JrIGhlcmUgb2YgeW91IGJ1dCBob3cgZmVhc2libGUgd291bGQgYQo+IG1v ZGVsIGJlIHdoZXJlIHZob3N0X3dvcmtlcigpIHNpbWlsYXIgdG8gaW9fd3Ffd29ya2VyKCkgZ3Jh Y2VmdWxseQo+IGhhbmRsZXMgU0lHS0lMTC4gWWVzLCBJIHNlZSB0aGVyZSdzCj4gCj4gbmV0LmM6 ICAgLnJlbGVhc2UgPSB2aG9zdF9uZXRfcmVsZWFzZQo+IHNjc2kuYzogIC5yZWxlYXNlID0gdmhv c3Rfc2NzaV9yZWxlYXNlCj4gdGVzdC5jOiAgLnJlbGVhc2UgPSB2aG9zdF90ZXN0X3JlbGVhc2UK PiB2ZHBhLmM6ICAucmVsZWFzZSA9IHZob3N0X3ZkcGFfcmVsZWFzZQo+IHZzb2NrLmM6IC5yZWxl YXNlID0gdmlydGlvX3RyYW5zcG9ydF9yZWxlYXNlCj4gdnNvY2suYzogLnJlbGVhc2UgPSB2aG9z dF92c29ja19kZXZfcmVsZWFzZQo+IAo+IGJ1dCB0aGF0IG1lYW5zIHlvdSBoYXZlIGFsbCB0aGUg YmFzaWMgbG9naWMgaW4gcGxhY2UgYW5kIGFsbCBvZiB0aG9zZQo+IGRyaXZlcnMgYWxzbyBzdXBw b3J0IHRoZSBWSE9TVF9SRVNFVF9PV05FUiBpb2N0bCB3aGljaCBhbHNvIHN0b3BzIHRoZQo+IHZo b3N0IHdvcmtlci4gSSdtIGNvbmZpZGVudCB0aGF0IGEgbG9mIHRoaXMgY2FuIGJlIGxldmVyYWdl ZCB0byBqdXN0Cj4gY2xlYW51cCBvbiBTSUdLSUxMLgoKV2UgY2FuIGRvIHRoaXMsIGJ1dCB0aGUg aXNzdWUgSSdtIHdvcnJpZWQgYWJvdXQgaXMgdGhhdCByaWdodCBub3cgaWYgdGhlcmUKaXMgcXVl dWVkL3J1bm5pbmcgSU8gYW5kIHVzZXJzcGFjZSBlc2NhbGF0ZXMgdG8gU0lHS0lMTCwgdGhlbiB0 aGUgdmhvc3QgbGF5ZXIKd2lsbCBzdGlsbCBjb21wbGV0ZSB0aG9zZSBJT3MuIElmIHdlIG5vdyBh bGxvdyBTSUdLSUxMIG9uIHRoZSB2aG9zdCB0aHJlYWQsCnRoZW4gdGhvc2UgSU9zIG1pZ2h0IGZh aWwuCgpJZiB3ZSBnZXQgYSBTSUdLSUxMLCBJIGNhbiBtb2RpZnkgdmhvc3Rfd29ya2VyKCkgc28g dGhhdCBpdCB0ZW1wb3JhcmlseQppZ25vcmVzIHRoZSBzaWduYWwgYW5kIGFsbG93cyBJTy9mbHVz aGVzL3doYXRldmVyLW9wZXJhdGlvbnMgdG8gY29tcGxldGUKYXQgdGhhdCBsZXZlbC4gSG93ZXZl ciwgd2UgY291bGQgaGl0IGlzc3VlcyB3aGVyZSB3aGVuIHZob3N0X3dvcmtlcigpCmNhbGxzIGlu dG8gdGhlIGRyaXZlcnMgbGlzdGVkIGFib3ZlLCBhbmQgdGhvc2UgZHJpdmVycyBjYWxsIGludG8g d2hhdGV2ZXIKa2VybmVsIGxheWVyIHRoZXkgdXNlLCB0aGF0IG1pZ2h0IGRvCgppZiAoc2lnbmFs X3BlbmRpbmcoY3VycmVudCkpCglyZXR1cm4gZmFpbHVyZTsKCmFuZCB3ZSBub3cgZmFpbC4KCklm IHdlIHNheSB0aGF0IHNpbmNlIHdlIGdvdCBhIFNJR0tJTEwsIHRoZW4gZmFpbGluZyBpcyBhY2Nl cHRhYmxlIGJlaGF2aW9yCm5vdywgSSBjYW4gY29kZSB3aGF0IHlvdSBhcmUgcmVxdWVzdGluZy4K CgoKX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KVmlydHVh bGl6YXRpb24gbWFpbGluZyBsaXN0ClZpcnR1YWxpemF0aW9uQGxpc3RzLmxpbnV4LWZvdW5kYXRp b24ub3JnCmh0dHBzOi8vbGlzdHMubGludXhmb3VuZGF0aW9uLm9yZy9tYWlsbWFuL2xpc3RpbmZv L3ZpcnR1YWxpemF0aW9u From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mx0a-00069f02.pphosted.com (mx0a-00069f02.pphosted.com [205.220.165.32]) (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 5A0AC34CF9 for ; Tue, 16 May 2023 16:25:17 +0000 (UTC) Received: from pps.filterd (m0246617.ppops.net [127.0.0.1]) by mx0b-00069f02.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 34GG4HHQ024776; Tue, 16 May 2023 16:24:54 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.com; h=message-id : date : subject : to : cc : references : from : in-reply-to : content-type : content-transfer-encoding : mime-version; s=corp-2023-03-30; bh=zMiy3wc6+2aah3369sgh6Hof2vKztLSRE5c9HDt6kHU=; b=m7/kFZiWNk2XcVLo6T8lCIfx0zh6M2alWeZ3PTK0Rzx+N+mMFfyULAwjYNoBp1DNLnSc IiQclr9cUu9Czu78whDwHDMBSPpsQsdM+YK1rENKT2iLrs5cgly7VhZ6uFQLWuaZTTRm 39usvj0o2/As3NyirOgSoMMibeHmIvg2J6jEAd/Jj2KESwnv76gOfllduRcVSvviEMVw JJlpewVZuOsuu3Yxd0RFUxp5FR25b3vC0YCupixoxwYjnLODIfGT9GQRIgHQ0F/3ldb5 AYhf4LconHxOT7gWlhjqw5+V8RMW+DWBVhCi552+s+6hQw6dHiz4Uy+wnMUHplw0Rxm3 pw== Received: from phxpaimrmta01.imrmtpd1.prodappphxaev1.oraclevcn.com (phxpaimrmta01.appoci.oracle.com [138.1.114.2]) by mx0b-00069f02.pphosted.com (PPS) with ESMTPS id 3qj33uu7k1-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 16 May 2023 16:24:53 +0000 Received: from pps.filterd (phxpaimrmta01.imrmtpd1.prodappphxaev1.oraclevcn.com [127.0.0.1]) by phxpaimrmta01.imrmtpd1.prodappphxaev1.oraclevcn.com (8.17.1.19/8.17.1.19) with ESMTP id 34GFMs4Y039953; Tue, 16 May 2023 16:24:53 GMT Received: from nam11-co1-obe.outbound.protection.outlook.com (mail-co1nam11lp2177.outbound.protection.outlook.com [104.47.56.177]) by phxpaimrmta01.imrmtpd1.prodappphxaev1.oraclevcn.com (PPS) with ESMTPS id 3qj10425hy-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 16 May 2023 16:24:53 +0000 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=ShItUuLDfXw1HEJddlkEGkN/QjBP4SEZbm+6QJowO+/3hWA/BBEZ7ZfBFFj3neb8+sIvj9PC0Zn4+C+U3o3wExkRTBfzoNdone9yZYHZ9rOWE0c2f3fAZ/jIEDeeYJ+HXI/A2YudyQ2gAslvLfe/l6ddLg7H2qbOU9TUoyKz/WLVBLedEL1Pg1JBLAF5sVtuZrq+olpUtJUmY+9igiLGUQJBEofw3ACI/JRLgZr73L8HfL7Kol+2Z8QQ1yikOJu85+z8fyec58sRS4qD6oSKdPuR3QM5nHDQmaispq91ze64nqm4QHGVJgk9h9V52PU0pWpctx5NnRqt3/W5bEfMfA== 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=zMiy3wc6+2aah3369sgh6Hof2vKztLSRE5c9HDt6kHU=; b=UCFxC68Q5d5kZjfxvC+lCHaMqHRc+fIZ/Dq8JlPEsSzPO0j/sd+uUetCW3vanDNi1gT3N7IOyD8hmHj3YGa5U+Usn615B4hZtq99kxRKw0sWnFCtFHUy8aMWHDuLDz09+FEAA/OrooQM2/NRji23k1qc2p4KJAyCkWBQsYpsqQR0qNEUJ+IgQ/6UjgNC4dKvfBu+Ln0J88hhMFHxknrUz2YtLqKpyYlLYDPxli5Aaxts/AH9Fv4BgF+pXd0V+7EF6SHwZPum8lFjL/28fL4778Yptkq4mu25v9j5eWNJfYDqc5A4/R3at8GerJ7xugPjVowWZtu3ONVGG5i2DRvheg== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=oracle.com; dmarc=pass action=none header.from=oracle.com; dkim=pass header.d=oracle.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.onmicrosoft.com; s=selector2-oracle-onmicrosoft-com; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=zMiy3wc6+2aah3369sgh6Hof2vKztLSRE5c9HDt6kHU=; b=hx1eedQjLsLx0vHf5nVumdm1RgHR3Gp3N5O/ar9jQ7LaRwrQ6ffVCDTLUw/q4iBTcEmAKxpjg/iJ/eBzOmKsAobqSakwl5i8M0yHyP5SHrEnC63ouQjwUPdSdRp6D9flLf2OQGvgI/q/+VJ8JDDtrirpJIbyJucWnxTbMY3jMg0= Received: from CY8PR10MB7243.namprd10.prod.outlook.com (2603:10b6:930:7c::10) by SN7PR10MB6641.namprd10.prod.outlook.com (2603:10b6:806:2ac::22) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6387.24; Tue, 16 May 2023 16:24:50 +0000 Received: from CY8PR10MB7243.namprd10.prod.outlook.com ([fe80::13d6:c3f3:2447:6559]) by CY8PR10MB7243.namprd10.prod.outlook.com ([fe80::13d6:c3f3:2447:6559%5]) with mapi id 15.20.6387.030; Tue, 16 May 2023 16:24:50 +0000 Message-ID: <683d0c30-4aeb-3547-49a9-90ce6eb1a7d0@oracle.com> Date: Tue, 16 May 2023 11:24:48 -0500 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.10.1 Subject: Re: [PATCH v11 8/8] vhost: use vhost_tasks for worker threads Content-Language: en-US To: Christian Brauner , Linus Torvalds Cc: Thorsten Leemhuis , nicolas.dichtel@6wind.com, Linux kernel regressions list , hch@infradead.org, stefanha@redhat.com, jasowang@redhat.com, mst@redhat.com, sgarzare@redhat.com, virtualization@lists.linux-foundation.org, ebiederm@xmission.com, konrad.wilk@oracle.com, linux-kernel@vger.kernel.org, Jens Axboe References: <20230202232517.8695-1-michael.christie@oracle.com> <20230202232517.8695-9-michael.christie@oracle.com> <78c5e150-26cf-7724-74ee-4a0b16b944b1@oracle.com> <48842e92-835e-bc3f-7118-48b8f415f532@leemhuis.info> <20230515-vollrausch-liebgeworden-2765f3ca3540@brauner> <122b597e-a5fa-daf7-27bb-6f04fa98d496@oracle.com> <20230516-weltmeere-backofen-27f12ae2c9e0@brauner> From: Mike Christie In-Reply-To: <20230516-weltmeere-backofen-27f12ae2c9e0@brauner> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-ClientProxiedBy: DM6PR08CA0032.namprd08.prod.outlook.com (2603:10b6:5:80::45) To CY8PR10MB7243.namprd10.prod.outlook.com (2603:10b6:930:7c::10) Precedence: bulk X-Mailing-List: regressions@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CY8PR10MB7243:EE_|SN7PR10MB6641:EE_ X-MS-Office365-Filtering-Correlation-Id: 46b9e564-7c34-4956-1568-08db562a1281 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:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:CY8PR10MB7243.namprd10.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230028)(396003)(346002)(136003)(366004)(39860400002)(376002)(451199021)(38100700002)(36756003)(31696002)(86362001)(5660300002)(7416002)(8936002)(8676002)(2616005)(316002)(6506007)(26005)(53546011)(6512007)(66476007)(66556008)(110136005)(54906003)(66946007)(478600001)(6486002)(31686004)(4326008)(186003)(41300700001)(2906002)(83380400001)(43740500002)(45980500001);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?utf-8?B?QzhzdXNCRmNkcUJvZitRc28zVk1FNFNSN1FxTm83OElCY0FJVkN1NEJZK25R?= =?utf-8?B?K2o5Y1piVnpiYTZMNEQ1L0w3amlObUxUL29KN1RWbTdwUHBXcmtkZlVkS0Rn?= =?utf-8?B?T3p0b1pBUHhqMEZXWWdPZ1RFdXh3a3lYRERwNkFFZEtJOG9lNWZkU0lqRmJ2?= =?utf-8?B?dEJkS2lPVzltWVZ6SFlsamJDYyt0RHpWSGN5SjUyMHU1d3IzK1ZYc2RtR0Vq?= =?utf-8?B?YlR6YUZNRDBOcEpWOGRvcXhkRERsa2NFWUdiY0xEQXRxdVpxelhMSnV6WmQw?= =?utf-8?B?eS9sVnFoUklsWUNKVFN1Z1h6T1RYTTlLT3FoUDlmRmVUQllBcDByMlBFbUdV?= =?utf-8?B?NEZGQjBMNlNIazFRclpmK3A3QUFSeUFhelk5K0J5NE9MUzY0Y3p2M2J3eWph?= =?utf-8?B?SHBzZ3doR2NCbVJtNHBTcWdudHYvM2F3cHRWVkh5REVRU09GMjlLakVDbzh3?= =?utf-8?B?bGE2UlNUZUhqdTJFZ1REZTZJVXpOelBpb1dyaEF2ZnRkc2o1Rm9mZXZlanNF?= =?utf-8?B?emFFNldzalNuNk8wTmhFSCtnb0MxdHZ4dXlIQkU3N09vS3lmQmR1RW1KSHdZ?= =?utf-8?B?Y2I5aUF4T2ZoTllXOEFhTDY5MG9QSlF5RExIeWY5b2ZCOEdxU1ppMG1heUVr?= =?utf-8?B?c3hGWjZGaFo1V0ZTcjM1Zk8wNmMwOXlhUkh1ZjAxMXRjVVF5RmdQUG82bUdk?= =?utf-8?B?QXRwVTRkV2xMaHpSd0xRbWJEZkNaaGRLYnFuY2lOT01WQ1RYSmR1YTF0aHNm?= =?utf-8?B?Z0QyRklIUGdoK0VXWmNJb3ppVG1aLzRxbzVJdlhGZWw3bWN0dkVQSiszMjBy?= =?utf-8?B?N0NSd0I2WmFXRlJkYWdTUUs2VWk4UFBRL1hqeTRDRUVhNGkvVWVJamowN3VP?= =?utf-8?B?ck90SUwwcUVnUHJrVHlwMVF5N25kZGIzUkl3Q3JnbVBtTU5ZZ2FTdEpaWk5t?= =?utf-8?B?L1lKK2F1ZzcvUStpdGxCcC9KYUw2TG9RdXJoZTdUZkI3UW9HVHJHdWNEQmdK?= =?utf-8?B?R3pOQnBZNkJQQWREUDg2NXNsSHFNeEZZTHdpRWl3SmlJL2VFM1I5ejh1NFY5?= =?utf-8?B?WTFlMGRvdDZQQWtuV1pBZlFvczQzcUhiWWRIZkVTb29PZ3NlOFQ5QmNBZkJB?= =?utf-8?B?N0xXQmVvWmQ5SDVYL1ZEam5HdXBvcStlOW9OZERObzdTb1FURVFqR2VWYjZa?= =?utf-8?B?R2VQZzE2aGNrVXJsajJYTEFVaWpSb1Nra0wwVFA1M2dxYWJ2R0kxWjhEdnFS?= =?utf-8?B?a3YxbmhMSVZTa1BGNk5EL29Iem9IdFUwWWRwNzZBd0V1d0JPbVQ3bFIwajJq?= =?utf-8?B?Ti9SUVhhZ1FvcTJTWGZWMFdXR285TVVoRFBkdEpmaEMxcVlRa0trbCtKcEow?= =?utf-8?B?cDBFU0lwTC9YQi9YR01pUEdVeUt6MmsyY2pGdnk5QUFGaGFmdTh3LzhMRjZF?= =?utf-8?B?SEtYelVUbGlFcmhqei9STnhJczlqb3dSZ2VKcStyOTZSUkUwV3h5VHJ3bFE2?= =?utf-8?B?Q0gxKzFGUFVLRzhra0FvZHkxeW03cU5mV1B0NFdyU2JEYzFjRS96R2IzbEZV?= =?utf-8?B?NHNyVWJWYms0MUhjM1FsUlFldWJlK3Nvd0E0STkrU0JibzRocFdSQ0VrOEJz?= =?utf-8?B?a3EvSzRUdi81d09EbzU5bWZQRWZRamd6Qko5YjNra2dkcVd4bGFRaUFBWW9i?= =?utf-8?B?MmtianF3NWNMc2FSRFlHVFZhTVF0L1krY0JxbmFhU0N5MVQxWmp2UVZaRjRv?= =?utf-8?B?ZXlpanFQeGIxeWdVSWJHbUx1MDgzek1YTURkeGFNY0tLWjBHRVVXamFreThk?= =?utf-8?B?K0czYXZFd0NkYWM1UHFpOW9obEFJRk9hYUxUUDFDVTE3S0NjRFgwdUtpL3lK?= =?utf-8?B?bXRCQWZWVWlKVEJTUVJDd1JCaEVzZGRVMXFIMFhKRlRBT09VOFJid3RxU0RO?= =?utf-8?B?NGtPS3dkQ0t6M05pNWlKSEVXQ2xsSnZNRVVjRzFPSk1PM21CSkRETUYrSk83?= =?utf-8?B?ZW5raUdjbzBWQjQwdGZVTHR6cTd1NGVXK2VUMXlqSkR1Z3ZHVXV4aE5hcDZy?= =?utf-8?B?eW92WmtWZDU5WGFEZXA0UENmcEdtVTV5NEtqbkNDQlFrcWxhcWdqdnFzY3Zw?= =?utf-8?B?b0ZTSUh0WENBMHladlhVanNYQ0NLTUtUWlFuUFlPT3hicHhPT2ttVVZpSFFl?= =?utf-8?B?cGc9PQ==?= X-MS-Exchange-AntiSpam-ExternalHop-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-ExternalHop-MessageData-0: =?utf-8?B?dWxZQm5aY1ZmajlVNHlGZmZZYkRnUVRhSGRkd0p3VUdxZThyTkRDVlZtYjAz?= =?utf-8?B?N0Z4QlpkNDdFV21MTXN3citsejNzaW5qZTJRcXhoWGM1bUJLZ2NDOXhHQ2Ez?= =?utf-8?B?WnlnSlU3RTVzcDF3d2dLZTcyT1l1MW1STE84MkF0MlBrbVBCekNJTmtVdEp6?= =?utf-8?B?SHVNMFloUGNMbFBIdnpMQk9MZWkvM1l1YWtwR1RhNEg3MnQyVnY1SHQrMFkw?= =?utf-8?B?ZUhCVkVUc3c2dXdpY05STUhpSTBKVk1DZnd1SlpsaEpUUmtkU2Y4U2lvWlBo?= =?utf-8?B?MTJmaHoxQ0ZBbHNBM3JqQjhHZUpqQytHUFJtdHZqU3lOMm5PNlRMaE9mRFNE?= =?utf-8?B?Rlk3djVBZTgyelBoSGp3YTI3RVlGOWlLYndybGkxeE81dEFiTWpsQ1F6b09H?= =?utf-8?B?Q1YrMzZOak1obGpKbTM3TDNmWnM0dGo3RXYzVWJsd0ZNZDNFZWE3OTlLbS8w?= =?utf-8?B?OThjWnJmVFpqMVErQ0ZFdW5zSHZlUmNWZUNxTDREQUxXbldkYW0zQTlONklK?= =?utf-8?B?SE5XV0E1ZzRMWUtYVGJhUkZlWGNKdjlORThHNklkUEJlRVhjOFR0MzNYWTg4?= =?utf-8?B?bzF0QktJTHQ4MkpDS0lValhjc2ZxMVl1WXFKemdOR3NpL0NGNnRMWEdvTGha?= =?utf-8?B?K2FvUVhmU3FTOTdQcXpZektIek5xMFpjVk0wZzZyd0JPY2hwUWtuQXZwcHVh?= =?utf-8?B?c1R6elNlQzNybHowY2cyb3RxUTZiSmtndVAyN3JtYUxLRjlrNXRvWnZyS0No?= =?utf-8?B?YzFDNzlaSGlBTmhsemlIcVBmbDJ1eDA1dGs2eEVJZXl1cmJGcFlKakk3TDQy?= =?utf-8?B?K3ZOM05FazV2N0VBUHpjRXgvNU95ZnAxbjhNV1Q0U0tQb014K1JKQzdDdUdp?= =?utf-8?B?UHdZUURLZkptZmx0aHdVa0J0QUJTUFZqajhOem5GcjFKUWJmdW80V2ZIbU1u?= =?utf-8?B?cUZwOGV3Ly96eXlTODJUL0JZc0xOZ3NaSG12THcxc1JDK25xdkFQY1o1Mnho?= =?utf-8?B?dnlhUGZWMkRMUHVzdnpZbTYwbXpBam1sU2dESmZMYXp3WVlFNXhpYkYvV0Jn?= =?utf-8?B?WWZzOFlrbHhCWWxlTG9vellLRkFFaUxieHp1SW9XWVZnMHFYYTByWTdSRGdu?= =?utf-8?B?ZFFoSFo1QThXZ2lqNmJZL1A0cUZVMFIxNE9ZVko3OFhrKzg4em9adCs3M1gx?= =?utf-8?B?Q2IrU2NONHJSWmdMRE5ITC9xeXpPaHEzaDduK3Rxb25Hd1lnZ3V6V3E3Mnls?= =?utf-8?B?OVVqQ1NWTU9XYkxwbklnc0FSWW9YeVlaSVN1QUNLWWZjK0xmUWF2SnBNclFJ?= =?utf-8?B?Z3FIRTRGazZkSEQ2elhZVisxWk4wVDEvSEJjaHZCa2k2OWxoVWN0Ujg4ZGJL?= =?utf-8?B?K2VKNWhLZFRFdkdxMG1aTmZKcENPK2gzbkd0TDJUdFpaSElVd3crWlNHdCts?= =?utf-8?B?L0I0bEpUYzJ1RUhtQWVPbGYxMDR5T0VRdzRuVmQ1M0M1TENuMDlBMnEvNTdV?= =?utf-8?B?bDdnMWpjTUxVVXNSKzhKRndaYjNtOXQrMXZNUWVwVzA2d01rWDcvWFN3M2dm?= =?utf-8?B?elNrQT09?= X-OriginatorOrg: oracle.com X-MS-Exchange-CrossTenant-Network-Message-Id: 46b9e564-7c34-4956-1568-08db562a1281 X-MS-Exchange-CrossTenant-AuthSource: CY8PR10MB7243.namprd10.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 16 May 2023 16:24:50.5509 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 4e2c6054-71cb-48f1-bd6c-3a9705aca71b X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: jLYC1o0KJO/TmeP6V7FT/MUyEE89nFEXhWRgiR93d2nY7L7yD7JbN2uuw1glvDfT/piqFEsXB1Yfh5kmJhVvXVONucNfLkHjq7u4S1BpCBM= X-MS-Exchange-Transport-CrossTenantHeadersStamped: SN7PR10MB6641 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.254,Aquarius:18.0.957,Hydra:6.0.573,FMLib:17.11.170.22 definitions=2023-05-16_08,2023-05-16_01,2023-02-09_01 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 suspectscore=0 adultscore=0 bulkscore=0 mlxscore=0 phishscore=0 malwarescore=0 spamscore=0 mlxlogscore=614 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2304280000 definitions=main-2305160139 X-Proofpoint-GUID: 3gRKZsDPWCF0oeKywT_2lB0eZZPhD0dm X-Proofpoint-ORIG-GUID: 3gRKZsDPWCF0oeKywT_2lB0eZZPhD0dm On 5/16/23 3:39 AM, Christian Brauner wrote: > On Mon, May 15, 2023 at 05:23:12PM -0500, Mike Christie wrote: >> On 5/15/23 10:44 AM, Linus Torvalds wrote: >>> On Mon, May 15, 2023 at 7:23 AM Christian Brauner wrote: >>>> >>>> So I think we will be able to address (1) and (2) by making vhost tasks >>>> proper threads and blocking every signal except for SIGKILL and SIGSTOP >>>> and then having vhost handle get_signal() - as you mentioned - the same >>>> way io uring already does. We should also remove the ingore_signals >>>> thing completely imho. I don't think we ever want to do this with user >>>> workers. >>> >>> Right. That's what IO_URING does: >>> >>> if (args->io_thread) { >>> /* >>> * Mark us an IO worker, and block any signal that isn't >>> * fatal or STOP >>> */ >>> p->flags |= PF_IO_WORKER; >>> siginitsetinv(&p->blocked, sigmask(SIGKILL)|sigmask(SIGSTOP)); >>> } >>> >>> and I really think that vhost should basically do exactly what io_uring does. >>> >>> Not because io_uring fundamentally got this right - but simply because >>> io_uring had almost all the same bugs (and then some), and what the >>> io_uring worker threads ended up doing was to basically zoom in on >>> "this works". >>> >>> And it zoomed in on it largely by just going for "make it look as much >>> as possible as a real user thread", because every time the kernel >>> thread did something different, it just caused problems. >>> >>> So I think the patch should just look something like the attached. >>> Mike, can you test this on whatever vhost test-suite? >> >> I tried that approach already and it doesn't work because io_uring and vhost >> differ in that vhost drivers implement a device where each device has a vhost_task >> and the drivers have a file_operations for the device. When the vhost_task's >> parent gets signal like SIGKILL, then it will exit and call into the vhost >> driver's file_operations->release function. At this time, we need to do cleanup > > But that's no reason why the vhost worker couldn't just be allowed to > exit on SIGKILL cleanly similar to io_uring. That's just describing the > current architecture which isn't a necessity afaict. And the helper > thread could e.g., crash. > >> like flush the device which uses the vhost_task. There is also the case where if >> the vhost_task gets a SIGKILL, we can just exit from under the vhost layer. > > In a way I really don't like the patch below. Because this should be > solvable by adapting vhost workers. Right now, vhost is coming from a > kthread model and we ported it to a user worker model and the whole > point of this excercise has been that the workers behave more like > regular userspace processes. So my tendency is to not massage kernel > signal handling to now also include a special case for user workers in > addition to kthreads. That's just the wrong way around and then vhost > could've just stuck with kthreads in the first place. I would have preferred that :) Maybe let's take a step back and revisit that decision to make sure it was right. The vhost layer wants: 1. inherit cgroups. 2. share mm. 3. no signals 4. to not show up was an extra process like in Nicolas's bug. 5. have it's worker threads counted under its parent nproc limit. We can do 1 - 4 today with kthreads. Can we do #5 with kthreads? My first attempt which passed around the creds to use for kthreads or exported a helper for the nproc accounting was not liked and we eventually ended up here. Is this hybird user/kernel thread/task still the right way to go or is better to use kthreads and add some way to handle #5? > > So I'm fine with skipping over the freezing case for now but SIGKILL > should be handled imho. Only init and kthreads should get the luxury of > ignoring SIGKILL. > > So, I'm afraid I'm asking some work here of you but how feasible would a > model be where vhost_worker() similar to io_wq_worker() gracefully > handles SIGKILL. Yes, I see there's > > net.c: .release = vhost_net_release > scsi.c: .release = vhost_scsi_release > test.c: .release = vhost_test_release > vdpa.c: .release = vhost_vdpa_release > vsock.c: .release = virtio_transport_release > vsock.c: .release = vhost_vsock_dev_release > > but that means you have all the basic logic in place and all of those > drivers also support the VHOST_RESET_OWNER ioctl which also stops the > vhost worker. I'm confident that a lof this can be leveraged to just > cleanup on SIGKILL. We can do this, but the issue I'm worried about is that right now if there is queued/running IO and userspace escalates to SIGKILL, then the vhost layer will still complete those IOs. If we now allow SIGKILL on the vhost thread, then those IOs might fail. If we get a SIGKILL, I can modify vhost_worker() so that it temporarily ignores the signal and allows IO/flushes/whatever-operations to complete at that level. However, we could hit issues where when vhost_worker() calls into the drivers listed above, and those drivers call into whatever kernel layer they use, that might do if (signal_pending(current)) return failure; and we now fail. If we say that since we got a SIGKILL, then failing is acceptable behavior now, I can code what you are requesting.