From nobody Mon Feb 9 19:05:10 2026 Delivered-To: importer@patchew.org Received-SPF: pass (zohomail.com: domain of lists.xenproject.org designates 192.237.175.120 as permitted sender) client-ip=192.237.175.120; envelope-from=xen-devel-bounces@lists.xenproject.org; helo=lists.xenproject.org; Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of lists.xenproject.org designates 192.237.175.120 as permitted sender) smtp.mailfrom=xen-devel-bounces@lists.xenproject.org; arc=pass (i=1 dmarc=pass fromdomain=citrix.com); dmarc=pass(p=reject dis=none) header.from=citrix.com ARC-Seal: i=2; a=rsa-sha256; t=1696259551; cv=pass; d=zohomail.com; s=zohoarc; b=LqiVSlAsjiZdH4BIKrFvDvj6Bf3Id5f6xTRijsvSSwmeq1vGTy8HXZFwADoV5nRffOM4olvlcczlDU6g2xqkiORxGYBu06CGVk9U14mJ5DuPXBpuwoeUmofhm+2Hu3M66SwzzAKjac6qL3yX5WzahCFtH6MKJ3g/5Y8X16nVDus= ARC-Message-Signature: i=2; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1696259551; h=Content-Type:Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To; bh=ZCapLEs8x3+5/GTRGxm23TN+ireMD0Zi0vUFCTJ5I3w=; b=hDrccoREZlB5usUrze4XV1asTsjtuyadYFty+WTM8uXA+8Ela7ZqxN/erMYxCG+Lxdok2kC2RJ6Mmi71SfnDq9e8OieZzATu2EElC4VK47LwQuwzHpeAv5fW6WJTAW0ql2HUUi6D7LtDLXe2U2v3eSeOFr2aAS7EhWwOARboPUA= ARC-Authentication-Results: i=2; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of lists.xenproject.org designates 192.237.175.120 as permitted sender) smtp.mailfrom=xen-devel-bounces@lists.xenproject.org; arc=pass (i=1 dmarc=pass fromdomain=citrix.com); dmarc=pass header.from= (p=reject dis=none) Return-Path: Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) by mx.zohomail.com with SMTPS id 1696259551069207.10599818650996; Mon, 2 Oct 2023 08:12:31 -0700 (PDT) Received: from list by lists.xenproject.org with outflank-mailman.611611.951142 (Exim 4.92) (envelope-from ) id 1qnKaa-0001K5-Et; Mon, 02 Oct 2023 15:12:04 +0000 Received: by outflank-mailman (output) from mailman id 611611.951142; Mon, 02 Oct 2023 15:12:04 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1qnKaa-0001Jy-AF; Mon, 02 Oct 2023 15:12:04 +0000 Received: by outflank-mailman (input) for mailman id 611611; Mon, 02 Oct 2023 15:12:02 +0000 Received: from se1-gles-sth1-in.inumbo.com ([159.253.27.254] helo=se1-gles-sth1.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1qnKaY-0000iK-CI for xen-devel@lists.xenproject.org; Mon, 02 Oct 2023 15:12:02 +0000 Received: from esa5.hc3370-68.iphmx.com (esa5.hc3370-68.iphmx.com [216.71.155.168]) by se1-gles-sth1.inumbo.com (Halon) with ESMTPS id 08f340da-6136-11ee-98d2-6d05b1d4d9a1; Mon, 02 Oct 2023 17:12:01 +0200 (CEST) Received: from mail-dm6nam11lp2177.outbound.protection.outlook.com (HELO NAM11-DM6-obe.outbound.protection.outlook.com) ([104.47.57.177]) by ob1.hc3370-68.iphmx.com with ESMTP/TLS/ECDHE-RSA-AES128-GCM-SHA256; 02 Oct 2023 11:11:52 -0400 Received: from MW4PR03MB6428.namprd03.prod.outlook.com (2603:10b6:303:123::8) by BY1PR03MB7261.namprd03.prod.outlook.com (2603:10b6:a03:526::9) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6838.25; Mon, 2 Oct 2023 15:11:50 +0000 Received: from MW4PR03MB6428.namprd03.prod.outlook.com ([fe80::ddbc:172e:c4a3:ec6f]) by MW4PR03MB6428.namprd03.prod.outlook.com ([fe80::ddbc:172e:c4a3:ec6f%4]) with mapi id 15.20.6813.035; Mon, 2 Oct 2023 15:11:50 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" X-Inumbo-ID: 08f340da-6136-11ee-98d2-6d05b1d4d9a1 DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=citrix.com; s=securemail; t=1696259521; h=from:to:cc:subject:date:message-id:in-reply-to: references:content-transfer-encoding:mime-version; bh=89MbL0AA6pA3j09tSq3RGefrgIUOeZgIRdfPXOZeMoQ=; b=fNwCJUxZJpTBtSlXMzbrvhaTiMDWFWgLY0eauyYRFL0xcfMkiZcV/hKX smYxAu4ndBnfA8IULRABVyW+68yw3cTyW9JI/Gy0PM2wG4qPMb7SLTDL4 j5CGXcLc0Xx/wxaAL7i90AO/ziiTNvL3dEb3gc5yOAtCbIRuDttFN/pEz 4=; X-CSE-ConnectionGUID: 8zczh8/BSZCOU1bS3+9qSw== X-CSE-MsgGUID: sXuusDf5S2ahrPxYFbt2kA== X-IronPort-RemoteIP: 104.47.57.177 X-IronPort-MID: 123016509 X-IronPort-Reputation: None X-IronPort-Listener: OutboundMail X-IronPort-SenderGroup: RELAY_O365 X-IronPort-MailFlowPolicy: $RELAYED X-ThreatScanner-Verdict: Negative IronPort-Data: A9a23:TnjRJKyOvtTJXgsFAxF6t+f+xyrEfRIJ4+MujC+fZmUNrF6WrkUPz 2ccWGvSa6mIN2LyKI9/a9yy8RhU7JPWn4NqGVRkpCAxQypGp/SeCIXCJC8cHc8wwu7rFxs7s ppEOrEsCOhuExcwcz/0auCJQUFUjPzOHvykTrecZkidfCc8IA85kxVvhuUltYBhhNm9Emult Mj75sbSIzdJ4RYtWo4vw/zF8EgHUMja4mtC5QVmPaoT5TcyqlFOZH4hDfDpR5fHatE88t6SH 47r0Ly/92XFyBYhYvvNfmHTKxBirhb6ZGBiu1IOM0SQqkEqSh8ai87XAME0e0ZP4whlqvgqo Dl7WT5cfi9yVkHEsLx1vxC1iEiSN4UekFPMCSDXXcB+UyQq2pYjqhljJBheAGEWxgp4KTFc/ u4YeHcnVSKooN/vyongCbh1vdt2eaEHPKtH0p1h5RfwKK9/BLzmHeDN79Ie2yosjMdTG/qYf 9AedTdkcBXHZVtIJ0sTD5U92uyvgxETcRUB8A7T+fVxvjeVlVMuuFTuGIO9ltiiX8Jak1zev mvb12/4HgsbJJqUzj/tHneE37WUxXqlBdpDfFG+3uVanUCI6mJOM0cfVUGDsciXgFLkWPsKf iT4/QJr98De7neDXtT7GhG1vnOAlhodQMZLVf037hmXzajZ6BrfAXILJhZBZdo8pYkpTDol/ laTmpXiAjkHmKGcTHuG3quXqT60NjkYKSkJYipsZQkP7sTnoYozpgnSVdslG6mw5vXqHRngz jbMqzIx74j/luYO3qS/uFzC3TSlo8GQShZvv1qIGGW48gl+eYipIZSy7kTW5upBK4DfSUSdu H8DmI6V6+Vm4YyxqRFhid4lRNmBj8tp+hWH6bKzN/HNLwiQxkM= IronPort-HdrOrdr: A9a23:xqpZz6FN9m1+7GGxpLqEHseALOsnbusQ8zAXPiBKJCC9vPb5qy nOpoV86faQslwssR4b9uxoVJPvfZqYz+8W3WBzB8bEYOCFghrKEGgK1+KLrwEIWReOk9K1vZ 0KT0EUMqyVMbEVt6fHCAnTKade/DGEmprY+9s3GR1WPHBXg6IL1XYINu6CeHcGPTWvnfACZe ehDswsnUvZRV0nKv6VK1MiROb5q9jChPvdEGI7705O0nj0sduwgoSKaSSl4g== X-Talos-CUID: =?us-ascii?q?9a23=3AuiUQq2iuPK0dRwSV2fbqE7/omzJuIm/W3neAZGW?= =?us-ascii?q?DO01OdeSfcgTTqbpfjJ87?= X-Talos-MUID: 9a23:Kso7RwSNqkqkvpGiRXT3tCx/L+tmvp/0AUAXqYU3lcOYby9ZbmI= X-IronPort-AV: E=Sophos;i="6.03,194,1694750400"; d="scan'208";a="123016509" ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=lilj1/5dN+dgDy3LLIVwcnFp/soHhLmWTGnXbItjcHR9dZZfHYrajoXWn6K1UfBIBZl3rEhxwh3E2ZZaJCJPllHQ+IfwTu1Sv2GIpOXf3KOM5V+UC5/eGc0He5dw4r3VYlGgIklxFQhmjoG1U9qLH7ZBpNXvZ0qxUp1nbgGHypzrde9gBvFoZIfVS1xaRpeTYdMkNyeFY1sHYirJ0zK3VYnp/0P34HyRbZGCpff3IyAwq3CC/1603zRos8NVsuZ7L7E+NTTzupBnwyhlKGJ61BE7FH1ZOsJOad+5ivPAzRWANp9Qp07PWVE82Tgc6+9KY7nCaOowXwQg120uJwzGjg== 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=ZCapLEs8x3+5/GTRGxm23TN+ireMD0Zi0vUFCTJ5I3w=; b=l7h3pI3JIvJiXdbeigx0e4H9hGp/8wxEaCAutFBjgXLIVAg31fSEcvg/e4BLPXhrOp4vmqfcP8te/y+9MapuaTTPpZtGytfrnrpKkYyPbi1lFWP/IBf7vP16akdg1Oos4k9XKdACSHnf2bNcVG/Zhaq/TU7HNtROiMqw4QOLok737SfSdv63usZhoBGzBXU7t6dZ1A4ssSEHM9bP8ANbaKJbF38YNask0bGtaS0kiI9TZHPaLZuAGqwczVDRkANV9Hi7TQH72wh07WY2LJqh+gVyJ/3PlYkm/oihADekZYK1oYbaVca01WJTfhOSmYYeR5Uoizno4+Hue1cCW846tg== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=citrix.com; dmarc=pass action=none header.from=citrix.com; dkim=pass header.d=citrix.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=citrix.onmicrosoft.com; s=selector2-citrix-onmicrosoft-com; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=ZCapLEs8x3+5/GTRGxm23TN+ireMD0Zi0vUFCTJ5I3w=; b=TTBoomylDiI/fZoE5pbgZ+A6AtXnIAM1f0y5I95S+WzR0V6q+CQT81tRutr52tW9a5BnzOIld3OZ9RXN9X4i0GupGkaFUWUlK2H+LbywoWkvg3NTiWDUWCclA1fAff72968IZWgj9jJ4QB9X7pHn/2uyPNTTViE0EayO1Y5DrAM= Authentication-Results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=citrix.com; From: Roger Pau Monne To: xen-devel@lists.xenproject.org, henry.wang@arm.com Cc: Roger Pau Monne , Tamas K Lengyel , Jan Beulich , Andrew Cooper , George Dunlap , Wei Liu Subject: [PATCH v5 01/10] mem_sharing/fork: do not attempt to populate vcpu_info page Date: Mon, 2 Oct 2023 17:11:18 +0200 Message-ID: <20231002151127.71020-2-roger.pau@citrix.com> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20231002151127.71020-1-roger.pau@citrix.com> References: <20231002151127.71020-1-roger.pau@citrix.com> Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-ClientProxiedBy: LO4P123CA0394.GBRP123.PROD.OUTLOOK.COM (2603:10a6:600:18f::21) To MW4PR03MB6428.namprd03.prod.outlook.com (2603:10b6:303:123::8) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: MW4PR03MB6428:EE_|BY1PR03MB7261:EE_ X-MS-Office365-Filtering-Correlation-Id: 652424a6-046c-4c49-46cd-08dbc359e6f9 X-LD-Processed: 335836de-42ef-43a2-b145-348c2ee9ca5b,ExtAddr,ExtFwd 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:MW4PR03MB6428.namprd03.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230031)(39860400002)(346002)(376002)(136003)(396003)(366004)(230922051799003)(1800799009)(451199024)(186009)(64100799003)(4326008)(8676002)(5660300002)(8936002)(6512007)(478600001)(6666004)(6486002)(2906002)(6506007)(26005)(1076003)(83380400001)(2616005)(66476007)(66556008)(54906003)(316002)(36756003)(41300700001)(86362001)(82960400001)(38100700002)(66946007);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?utf-8?B?aDBpR3VaMkNJSGNXZytSb3lZc2JsSktXMmxuWkN6eE1HK2NWaVRHSHBxdkFt?= =?utf-8?B?ZnJuVmhyK0hYUWszOUNGTm1MbWVHa1dKd3JHQWV2Tm9lN2pNakw2SThBMnJ4?= =?utf-8?B?SkZ6UkwyQkErSnNEZUowQTVEbjRzNWxnYVgzSXZjK3ZhWXVTWHJFM3pKbUli?= =?utf-8?B?SGdNbldzOWZNM25ZL1NZL2NuNVBJKy9WR1JtbXdKbVUzTzU4RHU3VWNKenVM?= =?utf-8?B?RktIaFg5VEY4b0F1NVlKTnlxRGxueVNZLzNaYkVqR0pKQnpyNmllTm9wQ1I3?= =?utf-8?B?Um1nL29xMUVkTzN1UEtjdVM0TXYrbmZ6c0gvZFZuWUhLT0tocTFkOGN5KzVK?= =?utf-8?B?djhOM1E3MXNKdXJ5dWlEcUc1dGpNNFQ4MTZUZXFaakRYZkNEYUdMUW43cnhH?= =?utf-8?B?Nyt5aXcybTB5bUdiNlpUaDY5R01DaXVDTDNnbCtuRTBEQStlWEZKR1gxYWVx?= =?utf-8?B?Rlc2aG04dU4zWmdLdFMxMmRVU01PYnlnSjY4dEJkZjhsUVMwcXFSOUZMS3Fh?= =?utf-8?B?Z2lGS2RIS04xWVU5SXNyaERRUHR5N1ZnUlJlRjNzYVY5VlA5cnRhdjIvYkhJ?= =?utf-8?B?eXAzWFJKOWkyZkVjMDZST2M5U2p4RXRldmJKa3hwVTlUVW1zY1lrbUVPcVM2?= =?utf-8?B?NjdRSWdKeEdtSVV5Zk9GU1lFQ1lEMUlhY2RNUnpycXplRG0yemp3b1gzWVVZ?= =?utf-8?B?ZTVLc0FuSDBtdGZ2MURmSDExZk1UaENQTzhhVXZOSlpFV2pTdXBSY3l0cUNC?= =?utf-8?B?aWZqbEFWUG9lbncyS1BZTmllMjFsQmZrVHJtUEJFRmFTY0xxVTRJMEM1Z1hX?= =?utf-8?B?cHVMTGJ0ZjNXbW5QZTFOSGtkcHdVTTBxcWhXWTVCdDNqcmZTcVlIYUp1THEy?= =?utf-8?B?MXNMS0NPRkhRRFdROGRQZEp2QlZGcFpYR0M1UkdPV1RnbStTV0hDSlhpU1NQ?= =?utf-8?B?NUxHblcxVmdKQjdrRDlXTUM0T1ZvTDNIN3IrSXFYQ1dhVG9QYk8xN3BXcWov?= =?utf-8?B?eHlWUHRRNG1jSkNlbjQ5c0xWSE5ibWlKai9NaUkySTRGYUJSKzIvaDlCRzRB?= =?utf-8?B?QlR1Nmp1RDR6NnZGOEsvVUE2TlA2VEEyOFhBc1gwMFBDZXVoTWxVWTExQ0U0?= =?utf-8?B?bHI1eEJrY051QmwyR2VtdkZKYUlIek5MMmljcjlLcnFRUG1leXppWnFFRmJM?= =?utf-8?B?MDZ4MFBkNHNaR0JpaHREQVBNTWV5RjVKczVRRmsxVnd1MUVBWmtGcFNjMmdL?= =?utf-8?B?YTZOZWZRVnlaem9xc21ZamZ1MUdxWXpURHczaUtnR2trL2dFSzVvQlNLaVY5?= =?utf-8?B?SEZjT1ovUC9PL3FUV2ZUbnlBOHhwc1hRVmJ5dFVDMEZRazdPalUxcVU1MGhs?= =?utf-8?B?YmxKLzc5aisyRzhkTFVTejk0MWtYOUNRcmpvcjVUUkhVVHNsVndpaVpVd0VZ?= =?utf-8?B?M3BaazBMazU4RW93UFFOeklFMUM0dHZuTDlmRU1YWUxmeFIvUm1nOFJZY0FS?= =?utf-8?B?akZHdVM2ZXE2UXo1YWRrZDRjbjRsaG1DdEhBMXVPdm5meisxZlIra2gvQ085?= =?utf-8?B?MDB0WU1JTHBVcm9kNWdLZ3FzWUtnOWtqMXRSTVYrUWtNZnlBemY5YWtURllr?= =?utf-8?B?SzNQUGgxZ0NQSlZhRkgzNFRqejBhOWovQjlzdldMci8xeGVoR0JLcmNRb3ph?= =?utf-8?B?ZGkyZUthQ0JkR1I0SGZKbDJyNmRMVndaekVCdWR3RGYvazNrbi9NRk9CdmN4?= =?utf-8?B?VUZGTnNKNDNHUmNVZGRwRnJkbVZ0ZG1vU2JDNFg3TmVBTHFpYndwNjlMeFd2?= =?utf-8?B?RWFRN1NuTU1ZT0tFcW1GcWNCeVROQ1RQcjRtNDNtQXd0bFFSK01IZzNpa0tD?= =?utf-8?B?MUFMK0NoVmoxaFhPZnVYMWUzWkUxQmhVNXA4OHZ5WXRWZGwzbnYrSS9ELy9w?= =?utf-8?B?NitKbEhrOFU1bUhJemMyQ0JtZk8rdzE1dVZCK2RHeTdDS2ZhMjBUbmZFMXpm?= =?utf-8?B?cUJ2NmU1UkRXWW9PS1pjcERWc0dYb1lvcFNWaUtzcG5sT0NqdWlIQ3ZaYnVS?= =?utf-8?B?ZloyNFYvdWE2bUJGMkJSWjhLcm1ucTZEU3FnUEFwaitjSG4vV3oxT0R0VGMz?= =?utf-8?B?aWJPSHFsWGc2Rk9qeURybjRWL1FCVngvNmh1T0laZWhkSUJEYUJ5eEVKZm5i?= =?utf-8?B?eGc9PQ==?= X-MS-Exchange-AntiSpam-ExternalHop-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-ExternalHop-MessageData-0: 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 X-OriginatorOrg: citrix.com X-MS-Exchange-CrossTenant-Network-Message-Id: 652424a6-046c-4c49-46cd-08dbc359e6f9 X-MS-Exchange-CrossTenant-AuthSource: MW4PR03MB6428.namprd03.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 02 Oct 2023 15:11:50.0218 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 335836de-42ef-43a2-b145-348c2ee9ca5b X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: hTBb32C7GRXYlmq9+USVN3xLKRzT3rl1vBZMqbxMtTQ6WZ3J+X3xLstaNGV8fI45dt6a0uzJZmv/4lz0quWzyA== X-MS-Exchange-Transport-CrossTenantHeadersStamped: BY1PR03MB7261 X-ZohoMail-DKIM: pass (identity @citrix.com) X-ZM-MESSAGEID: 1696259552861100005 Instead let map_vcpu_info() and it's call to get_page_from_gfn() populate the page in the child as needed. Also remove the bogus copy_domain_page(): should be placed before the call to map_vcpu_info(), as the later can update the contents of the vcpu_info page. Note that this eliminates a bug in copy_vcpu_settings(): The function did allocate a new page regardless of the GFN already having a mapping, thus in particular breaking the case of two vCPU-s having their info areas on the s= ame page. Fixes: 41548c5472a3 ('mem_sharing: VM forking') Signed-off-by: Roger Pau Monn=C3=A9 Acked-by/Reviewed-by from Tamas (or at least not present in my inbox). Acked-by: Tamas K Lengyel --- Only build tested. --- Changes since v4: - New in this version. --- xen/arch/x86/mm/mem_sharing.c | 36 ++++++----------------------------- 1 file changed, 6 insertions(+), 30 deletions(-) diff --git a/xen/arch/x86/mm/mem_sharing.c b/xen/arch/x86/mm/mem_sharing.c index ae5366d4476e..5f8f1fb4d871 100644 --- a/xen/arch/x86/mm/mem_sharing.c +++ b/xen/arch/x86/mm/mem_sharing.c @@ -1689,48 +1689,24 @@ static int copy_vcpu_settings(struct domain *cd, co= nst struct domain *d) unsigned int i; struct p2m_domain *p2m =3D p2m_get_hostp2m(cd); int ret =3D -EINVAL; + mfn_t vcpu_info_mfn; =20 for ( i =3D 0; i < cd->max_vcpus; i++ ) { struct vcpu *d_vcpu =3D d->vcpu[i]; struct vcpu *cd_vcpu =3D cd->vcpu[i]; - mfn_t vcpu_info_mfn; =20 if ( !d_vcpu || !cd_vcpu ) continue; =20 - /* Copy & map in the vcpu_info page if the guest uses one */ + /* Map in the vcpu_info page if the guest uses one */ vcpu_info_mfn =3D d_vcpu->vcpu_info_mfn; if ( !mfn_eq(vcpu_info_mfn, INVALID_MFN) ) { - mfn_t new_vcpu_info_mfn =3D cd_vcpu->vcpu_info_mfn; - - /* Allocate & map the page for it if it hasn't been already */ - if ( mfn_eq(new_vcpu_info_mfn, INVALID_MFN) ) - { - gfn_t gfn =3D mfn_to_gfn(d, vcpu_info_mfn); - unsigned long gfn_l =3D gfn_x(gfn); - struct page_info *page; - - if ( !(page =3D alloc_domheap_page(cd, 0)) ) - return -ENOMEM; - - new_vcpu_info_mfn =3D page_to_mfn(page); - set_gpfn_from_mfn(mfn_x(new_vcpu_info_mfn), gfn_l); - - ret =3D p2m->set_entry(p2m, gfn, new_vcpu_info_mfn, - PAGE_ORDER_4K, p2m_ram_rw, - p2m->default_access, -1); - if ( ret ) - return ret; - - ret =3D map_vcpu_info(cd_vcpu, gfn_l, - PAGE_OFFSET(d_vcpu->vcpu_info)); - if ( ret ) - return ret; - } - - copy_domain_page(new_vcpu_info_mfn, vcpu_info_mfn); + ret =3D map_vcpu_info(cd_vcpu, mfn_to_gfn(d, vcpu_info_mfn), + PAGE_OFFSET(d_vcpu->vcpu_info)); + if ( ret ) + return ret; } =20 ret =3D copy_vpmu(d_vcpu, cd_vcpu); --=20 2.42.0