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 lists.xenproject.org (lists.xenproject.org [192.237.175.120]) (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 E54BACDB465 for ; Mon, 16 Oct 2023 13:40:48 +0000 (UTC) Received: from list by lists.xenproject.org with outflank-mailman.617581.960295 (Exim 4.92) (envelope-from ) id 1qsNpl-0008Ko-SR; Mon, 16 Oct 2023 13:40:37 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version Received: by outflank-mailman (output) from mailman id 617581.960295; Mon, 16 Oct 2023 13:40:37 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1qsNpl-0008Kh-PR; Mon, 16 Oct 2023 13:40:37 +0000 Received: by outflank-mailman (input) for mailman id 617581; Mon, 16 Oct 2023 13:40:37 +0000 Received: from se1-gles-flk1-in.inumbo.com ([94.247.172.50] helo=se1-gles-flk1.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1qsNpl-0008KZ-4G for xen-devel@lists.xenproject.org; Mon, 16 Oct 2023 13:40:37 +0000 Received: from esa3.hc3370-68.iphmx.com (esa3.hc3370-68.iphmx.com [216.71.145.155]) by se1-gles-flk1.inumbo.com (Halon) with ESMTPS id 941788ef-6c29-11ee-9b0e-b553b5be7939; Mon, 16 Oct 2023 15:40:34 +0200 (CEST) Received: from mail-dm6nam10lp2101.outbound.protection.outlook.com (HELO NAM10-DM6-obe.outbound.protection.outlook.com) ([104.47.58.101]) by ob1.hc3370-68.iphmx.com with ESMTP/TLS/ECDHE-RSA-AES128-GCM-SHA256; 16 Oct 2023 09:40:30 -0400 Received: from MW4PR03MB6428.namprd03.prod.outlook.com (2603:10b6:303:123::8) by SJ0PR03MB6698.namprd03.prod.outlook.com (2603:10b6:a03:401::6) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6863.45; Mon, 16 Oct 2023 13:40:25 +0000 Received: from MW4PR03MB6428.namprd03.prod.outlook.com ([fe80::831e:28d1:34dc:f518]) by MW4PR03MB6428.namprd03.prod.outlook.com ([fe80::831e:28d1:34dc:f518%5]) with mapi id 15.20.6863.032; Mon, 16 Oct 2023 13:40:25 +0000 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: 941788ef-6c29-11ee-9b0e-b553b5be7939 DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=citrix.com; s=securemail; t=1697463634; h=date:from:to:cc:subject:message-id:references: content-transfer-encoding:in-reply-to:mime-version; bh=NUpW2Q0zd/reHswMQCDdMTUE5CBPOExnXchq41OZF+4=; b=RKokarn/5aFM5tI5HGXj+dYnpewRaihZfN1XmFHRjkn+erppS0azqpqn zATUC+8NQT2cJrf1Dgz7Wn5JBxjZjjCUoOA4CbG3TiuXbp6K20O2mVJuh e+qfZC8DvG7o4R3EbsP3XJNXFVTjkIpIeqKgKoiw+bE74tnZXMhWZmuL4 k=; X-CSE-ConnectionGUID: SiiMYeHxRpe25mKeSmCT7Q== X-CSE-MsgGUID: gohBbLAiRtC9CG3WVQTw7A== X-IronPort-RemoteIP: 104.47.58.101 X-IronPort-MID: 125703803 X-IronPort-Reputation: None X-IronPort-Listener: OutboundMail X-IronPort-SenderGroup: RELAY_O365 X-IronPort-MailFlowPolicy: $RELAYED X-ThreatScanner-Verdict: Negative IronPort-Data: A9a23:ceVqc6psCj4a0ELTuLhsoCgfWh5eBmJQZRIvgKrLsJaIsI4StFCzt garIBmBOKnbNmv9e40kPNni9B8EvpLdx4dmTVc//ipmRH8U85uZCYyVIHmrMnLJJKUvbq7FA +Y2MYCccZ9uHhcwgj/3b9ANeFEljfngqoLUUbOCYmYpA1Y8FE/NsDo788YhmIlknNOlNA2Ev NL2sqX3NUSsnjV5KQr40YrawP9UlKq04GhwUmAWP6gR5waGzidNVfrzGInqR5fGatgMdgKFb 76rIIGRpgvx4xorA9W5pbf3GmVirmn6ZFXmZtJ+AsBOszAazsAA+v9T2Mk0MC+7vw6hjdFpo OihgLTrIesf0g8gr8xGO/VQO3kW0aSrY9YrK1Dn2SCY5xWun3cBX5yCpaz5VGEV0r8fPI1Ay RAXAAsMbzWyisKm+qq2ELRppckYKeLXY7pK7xmMzRmBZRonabbqZvySoPN9gnI3jM0IGuvCb c0EbzYpdA7HfxBEJlYQDtQ5gfusgX78NTZfrTp5p4JuuzSVkFM3jeiraYKMEjCJbZw9ckKwv GXJ8n6/GhgHHNee1SCE4jSngeqncSbTAdhPS+XjpqYx6LGV7mMUCDcccXK6m+WS22WRAO1hE nALpQN7+MDe82TuFLERRSaQonSJoxodUNp4CPAh5UeGza+8yxaUAC0IQyBMbPQitdQqXno62 1mRhdTrCDdz9rqPRhq1/7OZrzq0NTISa3ELYSsJTwwt6N3kvY11hRXKJv5hH7S8itndEDT50 TeM6iM5gt07lscN3r6n9EvGhBq2r4DVSRQ44ArWWG+o9AJ/a8iuYInAwV/f4PVbLYffTUSbu 3MEmM+24+UHDJXLnyuIKM0tEbez9rC6OTvTqVd1Gt8q8DHF02W4YYla7TV6JUFoGsUJYznkZ AnUoww5zIBXFGuna+lweY3ZI8Y3yantE/z1W/aSacBBCqWdbyeC9SBqIEKVgWbklRF0lbllY M/CN8GxEXwdFKJriiKsQPsQ2qMqwSZ4wn7PQZf8zFKs1r/2iGOpdIrp+WCmNogRhJ5oai2Pm zqDH6NmEylibdA= IronPort-HdrOrdr: A9a23:eB4G0K7QyUo/m+kHxAPXwD7XdLJyesId70hD6qkQc3FomwKj9/ xG/c5rsyMc7Qx6ZJhOo7+90cW7L080sKQFg7X5Xo3SOzUO2lHYT72KhLGKq1Hd8m/Fh4tgPM 9bGJSWY+eAaWSS4/ya3OG5eexQv+Vu8sqT9JnjJ6EGd3AaV0lihT0JejpyCidNNXB77QJSLu vg2iJAzQDQAUg/X4CAKVQuefPMnNHPnIKOW297O/Z2gDP+9g9B8dTBYmKl4is= X-Talos-CUID: =?us-ascii?q?9a23=3AOGB472rcX70CWqxIkWCcBZvmUfskc1jswVfAGVe?= =?us-ascii?q?1Uztsa7CuTHSsp5oxxg=3D=3D?= X-Talos-MUID: =?us-ascii?q?9a23=3AZiwtbA/Z6BUY7Gs90RZE3pKQf8hv446kLGkMq4k?= =?us-ascii?q?t6uKrbhNOAguC0x3iFw=3D=3D?= X-IronPort-AV: E=Sophos;i="6.03,229,1694750400"; d="scan'208";a="125703803" ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=QdT3O7Lie5rLAXWk4jqnx2yuRVb3PxbefQIFkvcgHMjJAi/wRH4e6T+jL8DBi17FxlNrU+wxWi7Pg5bhEE9WtIatBRFDH1uMDmUYS/J4a9o5bC92SdIu2lkV3u5AuqBKlI8cdInnXIAkTRljlhXwpoWzr1A0tn+QlAF6JqHweXsc859/ekI29lInkk3uZMCw+SWQ7jLxWMqv+1caR0q8NiZSqKKu9Altd6XchVY6vCJ0xuybcli8FTbJkDouJ48snDWwKTgctdlA7fv66R8aqtTSzs4TaIIBw1Q4Wkf06LsKfk2fc0J9VqH35YAtBJF9tODeuQON5uTVUHc9QZ6Kzw== 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=3DWtfsZ/w1ncuaqwetCo4dV9h3I+NrmN94N+nh8cra0=; b=IpwP+gGSNqzPsymik0GaQA9G1T1U/KmNySjjSk9cHI8oSa+dfS+ll1TGGaCHuvM0KRYjezuCZQa9R1nX9B5dNV6urjNbIP6v1MfBJmS1fRNOL097LhdtibbSzBzhbYFgqL6goiIjucJ7e+eksSt2SfjanSjk6CxMy9UnwnpwyE6eP4O3jYJSHGbhImkmosSJ+ZQI+iMb/vf1//O/Fnp8QoN8yC3jikgc+v7KwGxTNm+YBX3WSRtMpo/aI5g7Hd4hrUmyxDbt+qm48EIgY82XPmDbcwX6YAigeEsmHu2Bszo0irC95y90IiGDVPXKVqV3dzqKowmDxvF2UprTTpNqsQ== 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=3DWtfsZ/w1ncuaqwetCo4dV9h3I+NrmN94N+nh8cra0=; b=ZsvxEz2Ry+gx7OBqm3dyO63YLxBERyNqVMleR6DJrqF2ro5SvYdJrG4P4TrJIkC6wlrCIpxwN+b2cdDW50iHzv21shf5C8pniEy6aI6MQfREZjPEVvww65+Fst//Xna7jhNNPqd9Kn+mwaYezE/wICnf1L8TlQ+yZF4QXwRyGIM= Authentication-Results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=citrix.com; Date: Mon, 16 Oct 2023 15:40:19 +0200 From: Roger Pau =?utf-8?B?TW9ubsOp?= To: Jan Beulich Cc: Andrew Cooper , Xen-devel , Alejandro Vallejo , Julien Grall , Shawn Anastasio , Oleksii Kurochko , Henry Wang , George Dunlap , Stefano Stabellini , Wei Liu , Julien Grall Subject: Re: [PATCH for-4.18 v5] xen/pdx: Make CONFIG_PDX_COMPRESSION a common Kconfig option Message-ID: References: <20231006144405.1078260-1-andrew.cooper3@citrix.com> Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: X-ClientProxiedBy: LO4P123CA0563.GBRP123.PROD.OUTLOOK.COM (2603:10a6:600:33b::11) To MW4PR03MB6428.namprd03.prod.outlook.com (2603:10b6:303:123::8) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: MW4PR03MB6428:EE_|SJ0PR03MB6698:EE_ X-MS-Office365-Filtering-Correlation-Id: f2fa3190-a6d4-45a4-18cd-08dbce4d7382 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)(7916004)(136003)(346002)(376002)(396003)(39860400002)(366004)(230922051799003)(1800799009)(186009)(451199024)(64100799003)(85182001)(8936002)(6506007)(5660300002)(8676002)(26005)(4326008)(86362001)(53546011)(6666004)(82960400001)(33716001)(316002)(41300700001)(83380400001)(66946007)(66556008)(6916009)(478600001)(6486002)(54906003)(9686003)(66476007)(6512007)(38100700002)(2906002)(7416002);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?utf-8?B?dk9BY0R5d3RtK2x0WW1MU0d6MTQ3cTJVa0Z5cUpMYWJTcGI1d1lsL2cvbWxT?= =?utf-8?B?UjFpWDNmQis5Z1FidzU4VnRGTUtaQXNiV1ZpVjdLK1RNR0NaTXF4azV2VWlH?= =?utf-8?B?L3gySGQ1dTQzUXl4ZUpCV0VjVUVzQ2hLT3MxMGRSTGF1WlMxMzFMbUl2eFhS?= =?utf-8?B?a2g2cFRxdzExY3RNd09ISXNzbWZFRldsNWxhWEt5WThJeXZmNHBDcTAxcEdN?= =?utf-8?B?ZGt6QVBDcnpTR2ZuTUVrMW5YWEJ6MGw3NUxMajhSbUJPcCtydmVFMGk5cC9R?= =?utf-8?B?NHJnekFjZ3RSZlByaFRGVG9wdExMYTU3L1VDc2NydHBuTHYxQVlMM25qMmxa?= =?utf-8?B?VjI2UjRsSWlBb2tsOHNKZ1VhUDBNYk1ZS0ZFYTVlY0s5ejNNU00rdUNIOGVy?= =?utf-8?B?bWNYN3hRYXh6VytWWEU1eEZkM294Z1lMUXVqZW1UQTdSbHNaL1pweEd3dEVS?= =?utf-8?B?c0lsNUt2aDQvQXM3U05WR3ZTS3R0RzR0d2hXR0NzbzRQWVFlMGgzb2hoSHpP?= =?utf-8?B?VzBRU2NTVDBCcStuSzVUUFA4enZxajM2TmJFZXBhRjdWOW0xL0dnYTN1SWxy?= =?utf-8?B?TnIvc1dZdm4rVjhOR1Nibmx4Zld6alQyeXNDOC9YN29GQ1BCbzE5L3B2d3lU?= =?utf-8?B?WVlsejRHUUd1UG4wNmFTSElybkdrc0RaUndUUTBGNUcwTDZ5bWdoNE5MM2xj?= =?utf-8?B?b3hmRWFsbldUMTVDaFFCelZFTFo1c094MzVFaDJFR3F1N0NidXUrMU1ETUpr?= =?utf-8?B?aXBXTXE0L2xPU0NoQkJLSFdoRjR6dlhHSHNDTmh3MklKQnhnakpOUHNoTmRo?= =?utf-8?B?ZlZ0YWFhQ2xDYm53WERyS1lmSWxqQUVlbWlBVzMrakgxZ3BSN1huQnp0SDRZ?= =?utf-8?B?Q3dlMWNINHdIczZiK1VBY3U0UEpnQnVmd1RlVVVFOElnTGZzSGgxUlh4Rnd3?= =?utf-8?B?OWU4ODN3L1hEYjVyZE5kUVBackE0SldleHhCUGNWQzFBb01JeWZza3gyMk9M?= =?utf-8?B?RUc3c3pFQ1JJaWFtdW8rNGY5RG4vaE5lcWpkSlQvSWUrYzM5RWFDcUpDTEJa?= =?utf-8?B?SkpOQ2l1K3FzcndBVWczL3VaTkdGVHgvUnI1QUhyb2VHVUt1Y2RJK2tPT0lp?= =?utf-8?B?dUZxUElOSDQ0QlQwQlpLT25hRnFEKzlRZHRDNkF2bC9lSmtLUmpnKy9aZW1C?= =?utf-8?B?UHNOWDYxa25DWDZSL3pPNFlzUXBOM2doVHBkaXl0THNKVUJsOGlxazVvMFUw?= =?utf-8?B?b1ZqUjJ0Q3pwdFZRclU0L1JLVjlTcmFPQk1IU3k4QVFoY2pPUGRIbS95bG55?= =?utf-8?B?NXZqQUFmNTRaRHdmN1B6aTVEcmZ6K1hZWTQ1NFlrZjd5aVhnVG5DcGdscVNZ?= =?utf-8?B?U3R5Zmt4dm9ZeGFFenVnNXdaeENidWhBVFJVV0c1NU00WXFyNkk5YXp4SUh2?= =?utf-8?B?MCtHeHBjNWwzVXBtemFienJNMmtVR1ZzQ2VhektUdStLZ3pYOHduTzhLZTlV?= =?utf-8?B?RFZvY3U2Y2FkUWQ1Y2wrMEJGZnpRVkZqdWxoSXVLa0J4SlFtNmxPVU9QNk96?= =?utf-8?B?My9IL3Vpck45bGc3R2EzRXAxcUxBQ25kZEtYbWtiTEtyWGh6UExHcW9FdVEw?= =?utf-8?B?bGRzc3pGSVE0TERkN2lacElLWnBoWnRDcnFRYWw2MTZrVm42Nzd5QnJvNnht?= =?utf-8?B?ZEF6QW1ZZXc5TnRSNERNYjVocGNjY0NwTVl2dVorL290VXNYb3dvV0lJVW9B?= =?utf-8?B?OHBDbSttZkxVUWJxdVltL09qNVRQaGZMd0JFZDRNQW5UaXEvVDYyTTNKSVlS?= =?utf-8?B?ekplQWdQQ1gyb3VjUEo4ZGpDZ09EZDdlMERuUFVLTTFiNUFWWnBGeFVJQ3g5?= =?utf-8?B?aUZtT3ZLeWlDTzZ1dnF1YUNyYTNhak5QeUtnZ3RFRHFLWXdXeVFDTHowRGZY?= =?utf-8?B?MGRyMUd6dW5IUklMamsvL2dZTlZXaFBsSloydUp6eW9hcGhqN0EwN1Z0NWJC?= =?utf-8?B?MCtIOS9qaFB5QXhUbEI2M2J1SzVYK1M0cVVPbzRueTI4N2htUmYzaklJNWRi?= =?utf-8?B?cDN3aGJKY2Zudkx4M0cvZW93RVpTL3ZWcUx4MkR4aWtOZmdneFNSTkxiN1Rj?= =?utf-8?Q?D0SjGgRDE/9NJ7a7HA43QFBo/?= X-MS-Exchange-AntiSpam-ExternalHop-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-ExternalHop-MessageData-0: =?utf-8?B?STkvSnd2eFhvYnJGdVIvSEtYcU0vRndQb1NhcmJOVE01U3dJSGs4UXZpRWQ2?= =?utf-8?B?NzZxTmdoUjJ5bS9rMWRCYzJiVDdDZXRKL1NnRk80UlZCYXFlUi8zRGFJbEUv?= =?utf-8?B?QllNTGhIdE9udE9VZG9EK29PTC9CcHo1dHlwZ2VRVGVKQlZaUitnRUJPSm5Q?= =?utf-8?B?YmF0amNnZGtmL3pLSHcxeHBpeDhZSHN5WmlyMWdGbVViOVBQY0pnRnp2clRJ?= =?utf-8?B?enVhM0lvVmU2VHBBZTNyVjBwM044dVZjSW9DK2pCVEFDblZuZXVjeGl0YXdR?= =?utf-8?B?ZGhCM3p4Y0xYaFhMS3Y2ZWYyWm14S1FsZkY2WkM1akRYbzE0QXR4U28xT0xu?= =?utf-8?B?RUZTK3B6bW9zKzlFUDRjMGNmWVFkaWZpUUlrWm00SzU4aEhUQ3FsRTJ0cktP?= =?utf-8?B?dTdKRnJIUHdobDMyZ0drai9zUkQ0K211d2ltZERJekRSMWVhRzFSVU1RcENu?= =?utf-8?B?NTlCVVJNb3BQMklETlRRMHludHlKOEMvTWZFUkkyYURzYkdDenpheC90aVBY?= =?utf-8?B?QWxwaVBJTHR4cnlvOXI2OE94dDJJUTNiR1ZLTVVIU0ZzaXM2NHA2NlF4YUlK?= =?utf-8?B?d3RENzlzKzdtMERBWXdPYUVtMHpjK1Y4ZFQrRXJPY0RSSG9uSFNZemdudjh4?= =?utf-8?B?d1czU3VSQnFkYW1MaEQ0SkMvNWdDQmFwSUk2cTREWVlPTGlVUVNTbjdra0tI?= =?utf-8?B?SkpmajVoeWc2TDV1NHM3akdKd2NnQmVTSW5YcnlPZURhaFpFUFduY0dyb3BN?= =?utf-8?B?cXJnT1N6cDg4VkllU1hSd2YyRFd1NXdZajFlMkNwSjV0eXBQWE9ZUWtyZGpk?= =?utf-8?B?MGR4cUJTM3E5N1c3VVBkTHFPdmxFY0NTNE9sSG9QbkMvQ1ovaDlldi9GMy9m?= =?utf-8?B?Y24wcnVWdjNrSzBHSzJvTGxzQTYwV0RpNTQ3VmRJV1psMVlnV2lYM3lrbTUz?= =?utf-8?B?SFczTzFSblY1TlorZDhHU3ZXZnFGSmhaVWU1amhLQmlsT1k0RE1UUG9xN3d5?= =?utf-8?B?OUc3c2dIbVh0dWFLMUxwa3FUd0h3YlVEdzhxcXNSVjdlc0JZM1k4TTVJOXlN?= =?utf-8?B?YlY2MW9PcEVoYnZ3ZTdOWFJxdWtnbERVaUdtUW1ZaGVoQ0FneGtHY01lOTNZ?= =?utf-8?B?QmI3T1JOT2h6RlZtUGZNalk4cE14Mkc5MWhWeDc0UHJlSUNHOUwyR2pQeFZy?= =?utf-8?B?SzljbHVHR3haeTUwbjEvRGU2MEZYKzJyTnY5Q2pPa3NTMkpEUlpPNFRhdjZo?= =?utf-8?B?bFRvc2dHY1ExMkg2bTNTZ1VzdDFYeXViSHJQbVZDV1RyWHpQeG9lQU1PMHpu?= =?utf-8?B?dkhnT3Q5dkF1SUpJMEdtTVQvWjI4T0J4a3VEN2FiL3RUWHFFYU0vUWVYQitj?= =?utf-8?B?dXBydVVsZ0x4cXc9PQ==?= X-OriginatorOrg: citrix.com X-MS-Exchange-CrossTenant-Network-Message-Id: f2fa3190-a6d4-45a4-18cd-08dbce4d7382 X-MS-Exchange-CrossTenant-AuthSource: MW4PR03MB6428.namprd03.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 16 Oct 2023 13:40:25.1193 (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: hP67+ToFTwsvAlOd5O+P3yhav2eMnsf+hCJeMW33/dcDEzeU7Har1TjkyiXoExhUjOlwizzLwAI9Kqkfi4jHTA== X-MS-Exchange-Transport-CrossTenantHeadersStamped: SJ0PR03MB6698 On Mon, Oct 16, 2023 at 03:19:22PM +0200, Jan Beulich wrote: > On 06.10.2023 17:27, Roger Pau Monné wrote: > > On Fri, Oct 06, 2023 at 04:09:19PM +0100, Julien Grall wrote: > >> On 06/10/2023 15:44, Andrew Cooper wrote: > >>> From: Alejandro Vallejo > >>> > >>> Adds a new compile-time flag to allow disabling PDX compression and > >>> compiles out compression-related code/data. It also shorts the pdx<->pfn > >>> conversion macros and creates stubs for masking functions. > >>> > >>> While at it, removes the old arch-defined CONFIG_HAS_PDX flag. Despite the > >>> illusion of choice, it was not optional. > >>> > >>> There are ARM and PPC platforms with sparse RAM banks - leave compression > >>> active by default there. OTOH, there are no known production x86 systems with > >>> sparse RAM banks, so disable compression. This decision can be revisited if > >>> such a platform comes along. > >> > >> (Process remarks rather than the code itself) > >> > >> Jan is away this week so I want to make sure this doesn't go in without him > >> having a say. > >> > >> While I don't particularly care about the approach taken for x86, Jan voiced > >> concerned with this approach and so far I didn't see any conclusion. If > >> there is any, then please point me to them. > >> > >> For the record, the objections from Jan are in [1]. If we want to ignore > >> them, then I think we need a vote. Possibly only from the x86 folks (?). > > > > I would be fine in leaving the option to be selected if we knew that > > such x86 systems might be feasible, but so far we have seen 0 x86 > > systems with sparse RAM. That said, I don't have a strong opinion, but > > the hiding on x86 seems fine to me. Interested parties can always > > forcefully select the option, and a case can be made to make it > > available again on Kconfig. > > I find it odd to demand people to change source code for aspects like > this. The very least I'd expect is that BIGMEM configurations (which > I've never seen any production use of) can actually also engage PDX. So we expect BIGMEM to have sparse RAM regions? I would have expected systems with >16TB of RAM to still be contiguous. Thanks, Roger.