From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from DM5PR21CU001.outbound.protection.outlook.com (mail-centralusazon11011025.outbound.protection.outlook.com [52.101.62.25]) (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 B8B981DED4C for ; Mon, 20 Jul 2026 22:38:16 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=fail smtp.client-ip=52.101.62.25 ARC-Seal:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784587098; cv=fail; b=glq6N95Jk0A2z9Rrs6vNx7sD7oaQOyoEXBj11U1irNeNHWGYGVIBESHs1oO9hjznuTwCghHyYfNLFm55gYNtHFujcZ96TNXG+IRE+guyMQx45AIiPPVPx7zZh2/maJCSPRPzg2l1EMJWkD5wc7ITsTJ/oaxaYa/QTpt2ZC6aX5I= ARC-Message-Signature:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784587098; c=relaxed/simple; bh=KOuYYzPh8tO0ViM4p6QIp2w/L09uz4fb9Jd6P38PCqg=; h=Message-ID:Date:Subject:To:Cc:References:From:In-Reply-To: Content-Type:MIME-Version; b=TH2VrLcVpHPVqXkihAThJepJ/cq7eS/4QyR9EH/pIMxL4EQ4GrMgpcsilflgQjLvbPWJ383nIkZeWjXirW064Z+a1uwea+pWSUzCwDulmw3hMjAhd+VZI7yjmPEBVUIQsEWh7mF4skczfzTBtj5saKN4h3H3zuYR0AtsA1ko20g= ARC-Authentication-Results:i=2; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=amd.com; spf=fail smtp.mailfrom=amd.com; dkim=pass (1024-bit key) header.d=amd.com header.i=@amd.com header.b=VHoFtEYT; arc=fail smtp.client-ip=52.101.62.25 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=amd.com Authentication-Results: smtp.subspace.kernel.org; spf=fail smtp.mailfrom=amd.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=amd.com header.i=@amd.com header.b="VHoFtEYT" ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=dboVhEgtoIZ3tLXlFquDz03UCy4bGCkdZFGrS41yibvdReBDbXwfGoW9HquH+ybjFSf9CFFywXkNr92wK48swDPZ72hoH5wTG/PPYnZdDRn4gzqOYStmD8nCPO5ASWF3wwBHSKssdsE6nPgYGXnBYxXyLf3YvuvNaL4UjahaKlntYIGy8+OIoG7U7isEVSeml12LrRcWVDVHL+PNupXISArkqLoaJrQpiypckK0kCwjQWl4dcMg+OgmOmFrSWNX6xVUdnPiUFOxsHR6wR9I+mfbKiSBPAxltAGn3enymyjDZiWo5KGxZV4PrRoP2tW/up7BhWxwQw9uG3WgAUNJAYA== 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=pvCi1LV+3Q0WoaCfNyV72Yt2H3O89+ExSXDRDTQ0E1w=; b=PMOIJbtG46P0E4Uy3PGhHxehHcgFDLmGRX03FLRMXjCWJeYmWq6CwN6WVutYtWODvc66o7byfTFjtmuVfiB11fB8D3HXpkNZcn+jqDGm8wzcvUMY3AKzXsfEub/5natF8ZRqdjFDnzNM9gftLYBMPPxqQ9vi1/RYSguXP51IoxY8CL1LQ8/LzbgZxAVzu2CRISCVxuarc0GneEjgDSILUBdzXfTkP1L1SYYF53iRYX/de9zh9yuIiAZYp+OYHYwJSi8HCGP2pWPD2lL2v4onHCNRdVvpuxnl9k6AyYAAHwhr7fvyyniEa3eH8YQ4X53Hyrzihh4OLi+80y2SgyNwAw== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=amd.com; dmarc=pass action=none header.from=amd.com; dkim=pass header.d=amd.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amd.com; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=pvCi1LV+3Q0WoaCfNyV72Yt2H3O89+ExSXDRDTQ0E1w=; b=VHoFtEYT+nq8U9KP+iiVFvQnjIKH1ArKyDQuYD7koMe4J6VCSNi6tMyalgWEcYjNHZYyuCNZl59BuovI54AbLd1gK+e1kHqPV4yiJ1NIzefKNMYQ526MW02ePLS9ThmEBfq2+X522kIWiIa6ERCg/lP3sryDiagtbOgEanJGo/Y= Authentication-Results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=amd.com; Received: from BL3PR12MB9049.namprd12.prod.outlook.com (2603:10b6:208:3b8::21) by SA3PR12MB8763.namprd12.prod.outlook.com (2603:10b6:806:312::21) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.21.223.18; Mon, 20 Jul 2026 22:38:09 +0000 Received: from BL3PR12MB9049.namprd12.prod.outlook.com ([fe80::ae6a:9bdd:af5b:e9ad]) by BL3PR12MB9049.namprd12.prod.outlook.com ([fe80::ae6a:9bdd:af5b:e9ad%7]) with mapi id 15.21.0223.017; Mon, 20 Jul 2026 22:38:09 +0000 Message-ID: <5168d3d3-c31c-4f80-be91-c964a5cee674@amd.com> Date: Mon, 20 Jul 2026 17:38:05 -0500 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v10 2/6] x86/sev: Initialize RMPOPT configuration MSRs To: Borislav Petkov Cc: tglx@kernel.org, mingo@redhat.com, dave.hansen@linux.intel.com, x86@kernel.org, hpa@zytor.com, seanjc@google.com, peterz@infradead.org, thomas.lendacky@amd.com, herbert@gondor.apana.org.au, davem@davemloft.net, ardb@kernel.org, pbonzini@redhat.com, aik@amd.com, Michael.Roth@amd.com, KPrateek.Nayak@amd.com, Tycho.Andersen@amd.com, Nathan.Fontenot@amd.com, ackerleytng@google.com, jackyli@google.com, pgonda@google.com, rientjes@google.com, jacobhxu@google.com, xin@zytor.com, pawan.kumar.gupta@linux.intel.com, babu.moger@amd.com, dyoung@redhat.com, nikunj@amd.com, john.allen@amd.com, darwi@linutronix.de, linux-kernel@vger.kernel.org, linux-crypto@vger.kernel.org, kvm@vger.kernel.org, linux-coco@lists.linux.dev References: <8518e02c46d6edf1f37a180569c708a3cfa7c413.1782841284.git.ashish.kalra@amd.com> <20260720221725.GDal6edYI3uHrDruHj@fat_crate.local> Content-Language: en-US From: "Kalra, Ashish" Autocrypt: addr=ashish.kalra@amd.com; keydata= xsFNBGnyeG8BEADrp4EWc3KHI3tz7Lnw4HgRJRG6U+IJKAp6EBnQA5uimlJspSAr+jf23I2a T0mr1uiTnZG0JkfgFpTgwBYcR+d8J96WP9LDeId9z6R7b5jyB64fhYqX8Hpich3lon2Woijn azEZ++sSUtAU75m2j9ZE6lkkPM2Ti9YWSBsSg92KDVVROXLO9n6U80lzudJrKAKHE0/PagzV D5gjV/s7lb9PX8khKVK3ockGRuy97lw2mAcw17EV8GE5cuToOOzpP8ESXBt1g7xoXVcbHYol yuX1ljHEfqy7cCtTsBk1+LzPuhZ7532MIfVmFtDcNUSwCGeGgwNRZno7lAJ9xd6fLkZPTEZ4 UNsaViyzmJ22P7xMiZqXWQWSk1LohnGhZZdTaIwidWT12c8RX+qVUCzesaFXGqKt0PNTipTp L39iEZO8m/+lC1BmTo0EoYtsNfrlngwNPsSU7rtd/t00RuW4YHhXALT2JUbulLCHGK1w9isH E7dJXprYjUiZRVF3SaeTF4zg5AzkWRB+0yL2KzWQPumDx1gscLNFev8J1EbdrYClcpUuNxKG MMG95wPqWtZm/HaNyG08alXDZcnq8hhxA7AbJLnPYpqWd108p0qp3Vr0UrvuekBKZ6Y7be+m Hb4A1xRX3hE2kB971lsVp0lXSEGFHB9TJw7FH/S8paITH58y4wARAQABzSNBc2hpc2ggS2Fs cmEgPGFzaGlzaC5rYWxyYUBhbWQuY29tPsLBkQQTAQoAOxYhBOnNssdBmZnznITYhaE6KKJw lji/BQJp8nhvAhsDBQsJCAcCAiICBhUKCQgLAgQWAgMBAh4HAheAAAoJEKE6KKJwlji/q7AP +wfg5wOWq+f7eB3uh0agX5Ax/o5r5hlK0EMyl+srJ4jc+NmNKKuVPwx0EwZEpuEcbDLlQuO3 JIyi13wm6n6FvIBOCfWjvndpaci1QGTMtZDnxueXM8UeFST3KjIEWFXbvgiAyiZBE+lHaSBp 7UfAL19icIomKdCVCRtnqOsTvv7mcyPL8qs+OAOu8akvp3NlGsqLrkSB/YTEBKmh8oOR0aXz 4VBIHpfTIppIu+F5l5PxOQGwNv/AfQ/oN+Aeo+o8i3s57gViqP8uVlVcI/vi1S4hngmc87Ah 3p7KdbrxxPzahD+p1fMXsCwEf0dyJIRduDgAkpktmSLoRzBGkjtOX5nvs75QgA3r0WsvcfxF zly+nnhu2GsptY+uu/ZzW6PCz6p0pHMiDfPAL1cfizY8eTMFJN5fnOW9rwXvKbM+DHbowfkw NtF0DecH3qjmqAzGg2srE9XJxwOotS1JgeBp1TZsah8pXBaY+Z7s1iaY58H2TrdiDbz88DD+ TGX4ZHPjocpqeUuwxn7gTCKQq3K1fjt6IKY0A1ocxQEK33pjQMRTJ8lwy4z37V6EohmvCs9w 5qyvI9D1gnMnFrqpbry1Jz7z1HB4sFFYxIxyMh86uOcUxGmHRrCiII3YqiSmzizvq4aUmHxd YE1Wy+pKx2HVobhnuKIKoSJj2JgYV0+O5dk6zsFNBGnyeG8BEAC+BGciGUt4ODNq38ouK/6E jlkJPpnxlksBhlhwce/p1vvARFceifVbawkM8ePHyIXrzxho0PUDjteGFFDjP1o/N0rQzgbf 0INfkbJpHME+SYETxrkm+j9oe8DiHXZhdatY5rupZoypodNQJDD1G/HoT7bBQxPj6xDBgHWH OyZbg1jjQXSWESgVX118uiQ5M9RdO+gc/YGLt5FDvN892uWs8899QBm804SdSlwkZGMKXZXv 12qKw+swQoVzBdCqSLOOtIhGevkl6Ul5+N8iT7xeKMVZffAxkz7DF1yDovhJhrYtgKyUMQqW qCINhtp9wHvPt+wfutzYsCLVJvVLMIj3fPtfYBSPXQu2FP0z2Nx6oUxQR/LjilP4UezSdXt9 WWpb+mvDLmelNuoA7WUxRauQBKu6tR1zoFl3zTdW4ZiSqZRgKInSfaVhINUMv8gqcLlAzkVS seOwRrwNDUosSW3gVwj28m/T9JSfGR62i58WmH0sFQG42yuIbq/uE4crf2oQDrpFNzTJgx6+ Ede711weViGHEQz5vsgERmQrJDddRTgl/SlGtkAYNpVFJgYV2N/jYjiz98hgE2MYgZ2Kd8WL T8dvswsQguvkDMpWJZ2BunYhRLGIpyVDhepu05qyFuNYA50GX/qcj7POBSEx/6mBaIQC7oXI ffsirWGyL5WEVQARAQABwsF2BBgBCgAgFiEE6c2yx0GZmfOchNiFoTooonCWOL8FAmnyeG8C GwwACgkQoTooonCWOL/tdA//RIcNr6dB4ZZaKWDe5SSw0KD7hKExIIiBkxIv5XILcazPK21x LlDbXUHxWWaG+9wezceRRBe3GjRo2aKEpQzuAOgR5Ix5tRe5yJAFozO/CCGixiBzQ2I2TGIv rp8xZqqvmgogckqz3RE9Rx5VF7bqKriuGbF+WciPU6+YSuN1rH+esS40yoFu2skbYAMfm+Av AvEMDAmkR1o+weVZZAZMjm+2ZpCm2xXk5bjAqPQ+GoH70x/kPVv+TXjTN68xIjmP6gwA7c1P qozwWzaA2Q2HO5D76clT3tmHbtzMuYt3cfwbWbCpNaqycaHvktATiRjy60Bz9FvRL8cMt0+4 jumtJoa0nAEmx88QzaMOK3QDW6KoDKzV8bqAHBPtrwH+jhOKId07yHmWCZxIGJAkhwqsdEx8 bXpP3nTer40r1tvds54lxhKxOlVvf5iBoxa3kC8f6cTNJeGm5ettvD5iFSR+fwAUDEyZEtxQ f3Brs3CLkBfijS0zCw9rWqlZJGSst5xwV8UdfppsPWkU9lAUR8UZFsO+g1xCxtBc0nucygzh O+mvU01WFeZGTnW7INdP+eDIvj4XYmVSjwCSNvDphJkPccAn2KFcPxYh8PJAqCDw++nfNDrc BXA1uh2XzCnnzbc62A+AjwXB89wvlctBLptKlnKBVtrsKEFIoLugtmfIsa4= In-Reply-To: <20260720221725.GDal6edYI3uHrDruHj@fat_crate.local> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-ClientProxiedBy: CH2PR08CA0023.namprd08.prod.outlook.com (2603:10b6:610:5a::33) To BL3PR12MB9049.namprd12.prod.outlook.com (2603:10b6:208:3b8::21) Precedence: bulk X-Mailing-List: linux-coco@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BL3PR12MB9049:EE_|SA3PR12MB8763:EE_ X-MS-Office365-Filtering-Correlation-Id: 0b6b5ca6-a3b3-4f4c-5c7e-08dee6af92bb X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|1800799024|23010399003|376014|7416014|366016|22082099003|18002099003|56012099006|5023799004|11063799006|4143699003|10067099003; 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:BL3PR12MB9049.namprd12.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230040)(1800799024)(23010399003)(376014)(7416014)(366016)(22082099003)(18002099003)(56012099006)(5023799004)(11063799006)(4143699003)(10067099003);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?utf-8?B?YjJKMGpZUkgrR00yMHhrTUJWOUhhcU9aRTIxeVdBVmRuSmIrK1RjcElTNU9Q?= =?utf-8?B?TE83WEpickZkVFZIRmtTaEhFQzlWRlJoUnMwT045Mkw0VW02ZjdpM1I5cEMw?= =?utf-8?B?LzZOVk11Y2ZidkkvaGxZNVZ6eVBZN3AzM0piMkVWd1JWQU1KcXRjUE9RRkJy?= =?utf-8?B?UzE0c1NsSlQyYXY3OEVkWnVTRnBYSldrK3VwOVViNVBCR2tJdUtiK1k4dmR2?= =?utf-8?B?UWR3cnV1bTNGMndWc1JvZEdQazFkZVBPZURvSExkaTlVTHp1V3BabW1GWVFT?= =?utf-8?B?V0RYdlFsQzdpa2V5WXdEaGFoNXNvRDIwYm5RRFIrQlR6TG5OUExQeUVRa1ZD?= =?utf-8?B?d3M4ZEVFbTBrVGkwQnFhZDlQeksyUnExOWJBc0F2RndreFY1VmZpaEkzRFZ4?= =?utf-8?B?VnI5eG5wK3h6NDJDamJEa05BN2d5Vk85b3hmUUoxWHoxZzNuWEFoZGtIN253?= =?utf-8?B?QmRydEhmUW1zNnBGVStwMUJRTUNPMlBxdlhCVTZFN0tnUGN4eFpvdER0SFRK?= =?utf-8?B?eEdZUEhNNitZVTdoa1NMbHJQVWg0Y3F4UGQ3R1EwSGRzcGUrWXRlQlhJbVpN?= =?utf-8?B?OFNYQ0ZCeWYydkF3UXpKTXVuekxHVjVCYWE1R2RVcHBzNlZQaUlCQjNNbm53?= =?utf-8?B?YU9mc2lZK1VMR1JXZmN3VmM2ancwVVBhL2luL2tQRm5FZlJyVHNWWmtvNmxt?= =?utf-8?B?Z3lybHFwVm5kMWhZa29uNXFHWkd5dnZIck9TZktaSDZsd2lkSmoxVUNTOFQ1?= =?utf-8?B?Uy94WTNRektIWUJ3QUtvZGVjTzFFc0QwNFdBemVJQXU0RHFtSGRVNmF3Uzh2?= =?utf-8?B?YVQzeS82V0pSQmkwMVJFdG5zbnZoVVJxb3lGV3BDa3lmTEtvdVJZd1llc2p4?= =?utf-8?B?VmM4dDZxWlF2ajZhV0tiaDhPdG9VNUwybjU0V3A5OHM3MEI5TmtOdDdTaG0y?= =?utf-8?B?ZEk4eE1DVUlLb3QyRFpjcitGVzRVTGkyRXA3c2hYbVVKUGQwY2lFTExrNXNy?= =?utf-8?B?a2RFeFZGT0MvcXUxRlNrcDUza3hSZStlOUZqdTByNGhEOWZ1bkduY3N6bEht?= =?utf-8?B?Q3ROQmR5OEhia2RsV2hiZzZHenlQOU1hRlpoL0hMeSswMGhQWHU1ZnZmVDB2?= =?utf-8?B?anRHdDh6Y05zT3pqRWd3VVpYZys0cXJxVkJ5cGpRaHZTbVhSc0hLb20rcWdl?= =?utf-8?B?NGd6ckM2TlZ1akdiTGx2NjQzWVdIQmYrWVZTMVlwRkFLdFFneFBYUTB1Y2ti?= =?utf-8?B?R0hWMW8zb29Gd0pTaHkyd25nUjcyUzljU1BGZFhGQUNOMEZrZWYycGFrZVVU?= =?utf-8?B?ell5dU95bkR0ZWR2WEl3ZkFoRDkxS2xNQjdUcS9IZWdka2gyRDk0YytqN2Fy?= =?utf-8?B?SDNZT3F2bUl5c1ROOFJzYTF1R21mYjZmL25DR2lJWlNRanFjVElaZHRpUEs5?= =?utf-8?B?cmNkelRWcFZxUEE1aWdsY0M1OWcwQjMwS1FvMFBROE5xc25oY1o2N2pwRXVn?= =?utf-8?B?N1lNejRwTFZLMjludHlhQTJYc1RIVjB2MEMwUzRKRjZOYmNsOEdrRk9yRU1u?= =?utf-8?B?UmFhL0JiZWZnSVZZNXc0MFltNXYxdEZyUVFsV0pieFc0SlFLNkJwUVMyY2NV?= =?utf-8?B?UWRlaUtkM2FsOEZiNjBaejFMMFhJQXc5Z3BGSlk3WG1lS1FaeVZtMkUrYk1S?= =?utf-8?B?NE0xOXc3SjQwYi9BaVZpZk80d0FLOE5oclZiNDZYakRPWU5STVNKMWxJQUlr?= =?utf-8?B?UkZzcUtVVXphYy9FYlIvOU1zdUFzK0Rqa3BPZDE4Qm13VzUvbmlnMFlwQi9R?= =?utf-8?B?aFhBei9jRmRnNkRvcllrQlNGODRibHhzQlhJeW81czBMZFBNVzc4S052Tlpv?= =?utf-8?B?N09PUmN4OUdiK1hJaEN0RHNYa0NGTnkrdVRUaFRHb1VFUkp0bWFEdGN1NFJP?= =?utf-8?B?RWgvYmZNa202SEx6VjRTZ3NYSEZSTUs0YzBNMFNkUUVGQitYTklDRm43Mkda?= =?utf-8?B?dmRRczAvUlNMQlZXM0Y1THE1Y0t5b2tCZnhhMEV3OWxNUTRXZkt6VmROeCt0?= =?utf-8?B?cjFBM3I1VTl1UzBnZkFEcldqSEZzYklSVHJ4U1BmcTMrTXRhR0tIY1hLN1NB?= =?utf-8?B?bi9malAxQ0ZVZFNTTXNKNURDSGZMV0RBcmwvN28rK1U0R29EYzM2TUF0UDVq?= =?utf-8?B?VkRyanhXa2JXbFZrMy9FTk56ZStUSWE0MVN1VjRnVnhpNzZ0ZERxUjZZb1Nq?= =?utf-8?B?dk96ZlFvdDljRFN1cTlLanRtQ3VaOUpOVzZvbnZMSUxLbVQxajRlaGJ1U25Q?= =?utf-8?Q?9HkrEs155p2tUd5vad?= X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-Network-Message-Id: 0b6b5ca6-a3b3-4f4c-5c7e-08dee6af92bb X-MS-Exchange-CrossTenant-AuthSource: BL3PR12MB9049.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 20 Jul 2026 22:38:09.2773 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: eKcKWDhj60Hvc9jCyUxP0D8AdmJ7IncXTqHNalcbcsSftjClzu7YgTtVUz5N+UiddMUkbcfY+eOR7lFlUc16fw== X-MS-Exchange-Transport-CrossTenantHeadersStamped: SA3PR12MB8763 Hello Boris, On 7/20/2026 5:17 PM, Borislav Petkov wrote: > On Tue, Jun 30, 2026 at 06:10:13PM +0000, Ashish Kalra wrote: >> @@ -490,6 +494,11 @@ static bool __init setup_rmptable(void) >> if (rmp_cfg & MSR_AMD64_SEG_RMP_ENABLED) { >> if (!setup_segmented_rmptable()) >> return false; >> + /* >> + * RMPOPT requires a segmented RMP, so indicate that the >> + * system is capable of configuring and running RMPOPT. >> + */ >> + rmpopt_capable = true; > > So we're capable of doing RMPOPT when setup_segmented_rmptable() has > succeeded. Which means, when rmp_segment_table is not NULL, i.e., when we have > a segmented table. > > Which means that instead of testing rmpopt_capable, you need to test > CC_ATTR_HOST_SEV_SNP and rmp_segment_table != NULL and you can put that in > a helper local to arch/x86/virt/svm/sev.c > > Which means, you don't need that bool. > Agreed on dropping the bool — I'll derive it in a local helper. One issue though: rmp_segment_table != NULL isn't segmented-only. setup_contiguous_rmptable() also allocates rmp_segment_table (the contiguous RMP is stored as a single segment in the same table), so it's non-NULL for the contiguous case too. To keep it segmented-only, I'll also need to gate on the segmented-RMP mode, something like: static bool rmpopt_capable(void) { return cpu_feature_enabled(X86_FEATURE_RMPOPT) && cc_platform_has(CC_ATTR_HOST_SEV_SNP) && (rmp_cfg & MSR_AMD64_SEG_RMP_ENABLED) && rmp_segment_table; } The CC_ATTR_HOST_SEV_SNP check also handles SNP being disabled at runtime, so snp_clear_rmpopt_capable() and its caller go away as well. Thanks, Ashish