From nobody Sat May 30 11:15:10 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=1778231386; cv=pass; d=zohomail.com; s=zohoarc; b=TdrxgFK2Id64cFt73Pa3hL3EmBA4tCeTeAu2T3QvIcr/VsXUu7/WMPv/qGro7gzja4kmw2bu9NhgH/GgNSdHUmlfM3SiSWXWdrykJ0QGVJvYJ2bjef1l6ESlyDkHkDFXTb+FpgBLAt9DKjk/5J8f6lb3bCCqTrwYTMgwA31Mbwg= ARC-Message-Signature: i=2; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1778231386; h=Content-Type:Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:List-Subscribe:List-Post:List-Id:List-Help:List-Unsubscribe:MIME-Version:Message-ID:Sender:Subject:Subject:To:To:Message-Id:Reply-To; bh=xUVEHxrKR+eW3aGyNqw0ViTP/jQIYisrE+p6Ds940tQ=; b=hHN9D41XnLYWX6YUINjrIbZln2Ud3alIbl0WSJZ2bLmOYo5MPyuVaNjKhHWrEUZx/w9+yLFutpEyhU+nIB+YAzcsb9Nf4rIyEtw4cvPj/QQIC3N3L2CE9FM3foQnrXwUH4Q3+y2xvQ0H8Z/HhZrE6bxr2dVRs4l1gLwdQuQJTc4= 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 177823138637058.694096211431656; Fri, 8 May 2026 02:09:46 -0700 (PDT) Received: from list by lists.xenproject.org with outflank-mailman.1303330.1576781 (Exim 4.92) (envelope-from ) id 1wLHDA-0007sz-1s; Fri, 08 May 2026 09:09:32 +0000 Received: by outflank-mailman (output) from mailman id 1303330.1576781; Fri, 08 May 2026 09:09:32 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1wLHD9-0007ss-Ui; Fri, 08 May 2026 09:09:31 +0000 Received: by outflank-mailman (input) for mailman id 1303330; Fri, 08 May 2026 09:09:30 +0000 Received: from mx.expurgate.net ([195.190.135.10]) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1wLHD8-0007sk-CF for xen-devel@lists.xenproject.org; Fri, 08 May 2026 09:09:30 +0000 Received: from mx.expurgate.net (helo=localhost) by mx.expurgate.net with esmtp id 1wLHD7-00C82r-C5 for xen-devel@lists.xenproject.org; Fri, 08 May 2026 11:09:29 +0200 Received: from [10.42.69.1] (helo=localhost) by localhost with ESMTP (eXpurgate MTA 0.9.1) (envelope-from ) id 69fda836-bab6-0a2a0a5309dd-0a2a4501ed5a-44 for ; Fri, 08 May 2026 11:09:29 +0200 Received: from [52.101.53.62] (helo=BL0PR03CU003.outbound.protection.outlook.com) by tlsNG-d62444.mxtls.expurgate.net with ESMTPS (eXpurgate 4.56.1) (envelope-from ) id 69fda847-c1f2-0a2a45010019-3465353ec54c-4 for ; Fri, 08 May 2026 11:09:29 +0200 Received: from CH7PR03MB7860.namprd03.prod.outlook.com (2603:10b6:610:24e::14) by BY1PR03MB7215.namprd03.prod.outlook.com (2603:10b6:a03:525::14) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.9891.19; Fri, 8 May 2026 09:09:25 +0000 Received: from CH7PR03MB7860.namprd03.prod.outlook.com ([fe80::f5ba:35df:1c9f:b343]) by CH7PR03MB7860.namprd03.prod.outlook.com ([fe80::f5ba:35df:1c9f:b343%4]) with mapi id 15.20.9891.019; Fri, 8 May 2026 09:09:23 +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" Authentication-Results: eu.smtp.expurgate.cloud; dkim=pass header.s=selector1 header.d=citrix.com header.i="@citrix.com" header.h="From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck" ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=KvlP9B/5AoQWV9M1n63ihAJ7UZu7nd1AnVZWEj7cWpcED07Tw7NHFmixIJNIeD5jbHklee0pVTg6StF4kEGHumSGUMy6CB2qGFqe4vsKbmvOpPoQEsWt9DBYCae/6mXrHBPwVhJehol5uvIKskmMbd4AvItKSOajMzpUknLRwiXDhLzEc3H/mGIyK66FH4IAuoPSm3xwUA/FshJe0UEKDieps5hG8q6U+0EaIL2vi1SXjPbQDxYxiT4/GfU4642V79itcWn29xtk2XQGNQQvJbrpRlsC2ODWCYtVQ+lMYwjcQHPYtWb8Shp4fLvOg/LdqLk9VrwwK052IwE52MX/uw== 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=xUVEHxrKR+eW3aGyNqw0ViTP/jQIYisrE+p6Ds940tQ=; b=o+266p+Zvl8rOwQHxrK36IEQHOVISP5Wzfc9jY+or0FU91hW4ZmGnm8jlDSDwhl3aPpD0GyoETTEHyjPj8twrmfeTx3OnzOuwJd7hXf20gkQEvzRL65eyBKIAZ8hnQdsgEtHqCp6RjlnVtbv/7YmMau8UzyEGO/9LOjX+3Jintc89tXbkcB7FeE0G+5dNhSKgl+M3fbxEXBSOczWv5p33C2uFCNZKE8ypk336IFKMofvUOXkq8IXAuAtROhjqRoZZj863B36XBiyQJH942NZmZ1XWvbU0RDPJP2LK1olYeJCA0Bi9PCXyo+xedLvOG2eYHivpA2FPEFk1YvqF+K9fw== 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.com; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=xUVEHxrKR+eW3aGyNqw0ViTP/jQIYisrE+p6Ds940tQ=; b=h0xGq1tWL9vrMnjzkPZIziGhrBPopLsk6Vt7fhsyJ+VF918BXkPJJu+/7x8tDhVlAFAUYZV1cF3b3ZHhaBn7ZfWd4rOmFqwIJI1KNM2KJOPlY60O5qDWbomduqn6rqR6Vn+2p2fvJUst566FwZNliwl46TYBYAYBtH5mLa/Gcqk= 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 Cc: Roger Pau Monne , Andrew Cooper , Anthony PERARD , Michal Orzel , Jan Beulich , Julien Grall , Stefano Stabellini , Teddy Astie Subject: [PATCH] x86/dom0: enable pf-fixup by default for PVH dom0 Date: Fri, 8 May 2026 11:09:11 +0200 Message-ID: <20260508090911.51941-1-roger.pau@citrix.com> X-Mailer: git-send-email 2.53.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-ClientProxiedBy: MA3P292CA0032.ESPP292.PROD.OUTLOOK.COM (2603:10a6:250:46::10) To CH7PR03MB7860.namprd03.prod.outlook.com (2603:10b6:610:24e::14) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CH7PR03MB7860:EE_|BY1PR03MB7215:EE_ X-MS-Office365-Filtering-Correlation-Id: d1cab7f5-bb98-46fc-e6ef-08deace17f2f X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|1800799024|376014|366016|56012099003|18002099003; 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:CH7PR03MB7860.namprd03.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230040)(1800799024)(376014)(366016)(56012099003)(18002099003);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?utf-8?B?ZENWWVl6blhibFhoYW1aR0RCSnVWYjc2QlUzSTQxQmYwUGl1UExKeTJWQXBD?= =?utf-8?B?WVFlQmUxME1xOUpLUDNyWnVCUmRVWWxRR2dtYlBsT25CNG9qSFV0VTVNQ3RV?= =?utf-8?B?empLTHh4bXhsUEJQUWJCQUo2VVBwclcyMTV3V21Mb3h1bnhsVkFvODFZRjdu?= =?utf-8?B?SVAxSWNMTzIwTWgwVWkxa2ljd2ZxVmNUdEJlaHNoRjF3TDQvYmlQZWswbkZx?= =?utf-8?B?b0JFejVmL3Q3Wkc4cWVPa2xvZ0pQUytKQm5BL1B2TUNzd0dqNngwWUYrZllY?= =?utf-8?B?cU5VS3dVaUd0WmlRTVN3VWZjYTAyNVk0Ynh0TDJtUjRHd1A2L3h4MzBwYTdD?= =?utf-8?B?SGJXVXUrUmRQRHVFQTdlb3puSk1YOEFlTVUzQ0prTTljbFFqRjhZd0k2UGgr?= =?utf-8?B?bDFSNFJreU55M0J1d2xURWdOZk5nN3U5UitSdFU0clUwQkhkR0QzbFNMd2sw?= =?utf-8?B?UlI4U3pxYVJoN2tmVXdQT1l4c0ZYK2JsU2FSTDVwU0dRby9yZnJhNTJOOTdX?= =?utf-8?B?ckRiNUtFbUlNUXcxYXRBUzA1UmlkVWxZU2FCT1ZndXgydWJwdERuRjFpc1Zi?= =?utf-8?B?RE1lYjVJN0syK2dWOXZrcXZ6YjV1dERId0lSNUpvNmRtR2FWcDIzOXVWV3c1?= =?utf-8?B?K25aU1pvcE9wYWlhd09tVWZlSmF6NTU4Z1JFZWJCdTRETWt4M25wd3dGRkV3?= =?utf-8?B?RERnY25iM242dmFQcTlUaCtNMWJWcm9YUklheU1yK2QyR0NaRnlBN2NUdWhw?= =?utf-8?B?Ynd6Qmg1emFRTDVkN1phempxcG5Oa3YvNUp0cnNNQkV2dmIzKy9Feldlb0ow?= =?utf-8?B?VWNqaDExZHc0ZDVmSzROY0ltS3dZNUpNNmJWWnlWckNKN2xQb0ZqYW1Xbm8v?= =?utf-8?B?Zk12UmtUQ2xLY2o2dXB5TFNRWDZnczVnV1FYK3BhV0VKaitsc0pQVzZiUTNx?= =?utf-8?B?RWdxYi9tUDhhTGg4djFSbTEveHJiNkRvNlVFTDBVRnNHZ3BOSDFBQzJ2blVt?= =?utf-8?B?Z2xoZ2RDUHNUSzFTUW02OUJCYVVXWm9ILzZzd2JIMXVvLzF0L1dkVVNmTVNp?= =?utf-8?B?SXN0WHFXdnRpRGJqY2Q0cnVoL0pQK0d2UHl5ait6YmFGeWc2T2x4ZGVsTkxx?= =?utf-8?B?OG1UUkZSWUtsTENSdzVacXdUcFVxeGJ2OS9JYWlFMkJjbitXcnJMY2hGQW9o?= =?utf-8?B?TDM3NTluYXFpdUdKWmZKTy9XZDlQVlZMYUxwMGYyN2VFQzdqR1JhbEFyU3k0?= =?utf-8?B?U1FmT0R1ZVVPNlVoNmF1Z0J1amlmeklvZkROOU9za0xiWlQvRjE0K2pNQThC?= =?utf-8?B?N3lRSEFkRFltUlNhSzhpUk43ZHRnT3BsOXFHd2YxS0hONUx3eHVOVSttdnNV?= =?utf-8?B?aFU0M2ZnQjU3YzBHQ2R3d3RIbklLNlFDQjc5Z0NnRzVEM3ppZ20wdjZ3b0Jo?= =?utf-8?B?cHJJMithQUlwMXhKVkd4TWhsc09GN294RllVaWd3RU93Ylp3ai8xNlFkNDMv?= =?utf-8?B?TTJvOTF5ZUtYQndiRmQ4YWRacFV0bUtKL2FWeEVvRW90SWVYeFhIMWFWOVRV?= =?utf-8?B?bXREYm5HN0lNaUtlU2FrSmF0cW96L2QzYXRkaUhzV2VwdGdzVG9qQi9CT2wy?= =?utf-8?B?M0FrRUxYWVZlYUc0Y0ZnTUhQRVJrV0E3RGtXWWtxQzk4MGZMa2RWZndnOHNu?= =?utf-8?B?aGg0dWdMZExXNWVXNVg4OFBxdGlyaXQ3bGhobTV5WXp1aDVpVENyMDR1Rzdm?= =?utf-8?B?djU2akdOOFpyN1NwSVU2R0xsbDM3WG53MWlWSlRybkdpcG4xb3E4MkpKZStu?= =?utf-8?B?d1UyNWJYUWFJUG02NTF4NFBYVWNGUzhKcGpHamF5bmIxUHpqVklVTzV1Snpr?= =?utf-8?B?cXhzd01qM2hHZFp0RmZtZDg2eCtXbjhTbGZZc3JoblR5ZTFVOVR4L1RQbGFa?= =?utf-8?B?QXRjbEl4VXI2b1F2RG1TZ3F6SjNOazJaWEFlVGxXZnVQYXJqTm5OeHRoTkw2?= =?utf-8?B?cXJFNFBxK2x6ZHlFSWtSbHBPM05hQURtb0NqWndHdjg5c1p6WmNnZ3M2U2ZZ?= =?utf-8?B?b0RXQkhwTnBxOVU0dy94enlCOEVoZFI2TkZFOFIvK3BEa3hZTk5GcllZVTFS?= =?utf-8?B?VHhwQ2lzVEIxak95NDlJOWtZd21nM3ZFT0hvblJLVVRicEdTQXVudGFaMGJO?= =?utf-8?B?VTFhWERTNkVzN09VcS85Y3ppNzRUSTZmcHpzRzJqcnI2Q0NWUFRJdnpjWkFx?= =?utf-8?B?ZFBCN3FiZXFpTGR2eUJNS204RnVNaFdjL3J3ZTIyb2VMSVhUek1IcnRXZXho?= =?utf-8?B?MlVwdVk3Zm1rTjZwTm4rNUp4T2RwTmdaTkFKVDcwbDhEcXpLZkY2QT09?= X-OriginatorOrg: citrix.com X-MS-Exchange-CrossTenant-Network-Message-Id: d1cab7f5-bb98-46fc-e6ef-08deace17f2f X-MS-Exchange-CrossTenant-AuthSource: CH7PR03MB7860.namprd03.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 08 May 2026 09:09:23.6941 (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: g8ioCH66zNAMK+efwPWUw/h3ZUKspJg+C7HYpn7lKGZ6vn8Hsr21R551PzUblRs9Jn3DOuqUlgxCAGJ+8MRO4A== X-MS-Exchange-Transport-CrossTenantHeadersStamped: BY1PR03MB7215 X-purgate-ID: tlsNG-d62444/1778231369-B474CFF4-11E0AE1B/0/0 X-purgate-type: clean X-purgate-size: 1581 X-ZohoMail-DKIM: pass (identity @citrix.com) X-ZM-MESSAGEID: 1778231389028154100 A non-trivial amount of issues related to PVH dom0 are fixed by enabling the `pf-fixup` command line option, and no issues have been reported as a result of its usage. Enable the option by default to make PVH dom0 more robust in its default configuration. Signed-off-by: Roger Pau Monn=C3=A9 --- docs/misc/xen-command-line.pandoc | 2 +- xen/arch/x86/hvm/emulate.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/docs/misc/xen-command-line.pandoc b/docs/misc/xen-command-line= .pandoc index 6c77129732bf..0cbac1093928 100644 --- a/docs/misc/xen-command-line.pandoc +++ b/docs/misc/xen-command-line.pandoc @@ -849,7 +849,7 @@ Controls for how dom0 is constructed on x86 systems. If using this option is necessary to fix an issue, please report a bug. =20 * The `pf-fixup` boolean is only applicable when using a PVH dom0 and - defaults to false. + defaults to true. =20 When running dom0 in PVH mode the dom0 kernel has no way to map MMIO regions into its physical memory map, such mode relies on Xen dom0 bui= lder diff --git a/xen/arch/x86/hvm/emulate.c b/xen/arch/x86/hvm/emulate.c index f3aae158e9f8..bb1bb03ac4e9 100644 --- a/xen/arch/x86/hvm/emulate.c +++ b/xen/arch/x86/hvm/emulate.c @@ -165,7 +165,7 @@ void hvmemul_cancel(struct vcpu *v) hvmemul_cache_disable(v); } =20 -bool __ro_after_init opt_dom0_pf_fixup; +bool __ro_after_init opt_dom0_pf_fixup =3D true; static int hwdom_fixup_p2m(paddr_t addr) { unsigned long gfn =3D paddr_to_pfn(addr); --=20 2.53.0