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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6A141C0015E for ; Fri, 4 Aug 2023 01:02:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231178AbjHDBCF (ORCPT ); Thu, 3 Aug 2023 21:02:05 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44296 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229867AbjHDBCE (ORCPT ); Thu, 3 Aug 2023 21:02:04 -0400 Received: from NAM11-CO1-obe.outbound.protection.outlook.com (mail-co1nam11on2079.outbound.protection.outlook.com [40.107.220.79]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 289D1F5; Thu, 3 Aug 2023 18:02:03 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=KnE27zLpkYTRk4cFzl0QOuBDzUw/pbjHNvrARSsFHrtLzdIAgj9asHYT2uRFJt3dp9rBO9rnm5FKtfaN2OneuylH+CulKDEfq2WmaAQ51BuFxYkE8jmtW20TBDhi9+geZtk01VNPKkkoGD/JqoXXSvpTxG1Mn22DWRs2ANnGD7GhBDZIZQWwkSgMjTvoiBUUeOBJnozafjrMa3ujJx3hf0KIKery2/OiCK4zEb5kBq4NAk4Xql4ygrg6coh856Dp2Z0lDuHx/m0fjOhusJXFknfwiTpt3elvvxx6ZwpPbBDPiKRVw9l0IK8lbF0yhEyWdPorMXoapKc9yIMtDdtGMg== 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=2MnahBNHfGdNS+a7IsBb0bVHW3lSIkSwch8r9vtIK+4=; b=GjJxNKgX9GqXLJPYlJAI1TrrMhQ1GM8K3AU/JaGYD6WpAkSGyohgn7djROiN2EG3JpfyYkl411XDFFFfIxR0u06k0M0XWTxmybBxEFw6Va/ARx/lEis8yFFHPkuNvQOD94yROpXviTqXpTQ83KxsbBqjniuBCgP+2lzohnS79UQvkB+26qNN05wz8C747EOK9UyyviP4W2pwUmweb3IytJ3h6/KMnl6Nxxq4Zh4qBBojSRtoJhZpvslA+GTR2GMN5or8UsO7Paq3GKo5asCf/bEMQGM4telyVYGKEKjV7MRoxSYIHetHNeb/uzLF7HpiQc2v2pjHIm2tRrjrONPayA== 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=2MnahBNHfGdNS+a7IsBb0bVHW3lSIkSwch8r9vtIK+4=; b=sQA99x4QGgeONuCJSj8Jmuh+6ZQjgH66wRH5j1TV03V+Qls3JHq79Xe3Ti0c6OwUoVX5gwfG/xo3PF9DQVhDT6KEYqCOPkpZ6p1ti2IZLrFa5ndA9CYkmoLVUlUfl5jdzij/etnrclwC+98hoQBwBmvxnBxZtjJ+olT+Aweil00= Authentication-Results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=amd.com; Received: from SN6PR12MB2767.namprd12.prod.outlook.com (2603:10b6:805:75::23) by SN7PR12MB6670.namprd12.prod.outlook.com (2603:10b6:806:26e::12) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6631.47; Fri, 4 Aug 2023 01:02:00 +0000 Received: from SN6PR12MB2767.namprd12.prod.outlook.com ([fe80::af15:9d:25ab:206b]) by SN6PR12MB2767.namprd12.prod.outlook.com ([fe80::af15:9d:25ab:206b%3]) with mapi id 15.20.6631.046; Fri, 4 Aug 2023 01:02:00 +0000 Message-ID: Date: Thu, 3 Aug 2023 20:01:56 -0500 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:91.0) Gecko/20100101 Thunderbird/91.2.1 Subject: Re: [PATCH RFC v8 00/56] Add AMD Secure Nested Paging (SEV-SNP) Hypervisor Support Content-Language: en-US To: "Schander, Johanna 'Mimoja' Amelie" , "Graf (AWS), Alexander" , "michael.roth@amd.com" , "mimoja@mimoja.de" Cc: "tglx@linutronix.de" , "srinivas.pandruvada@linux.intel.com" , "tobin@ibm.com" , "kvm@vger.kernel.org" , "alpergun@google.com" , "jmattson@google.com" , "luto@kernel.org" , "ak@linux.intel.com" , "slp@redhat.com" , "dovmurik@linux.ibm.com" , "pbonzini@redhat.com" , "rientjes@google.com" , "peterz@infradead.org" , "linux-kernel@vger.kernel.org" , "pgonda@google.com" , "thomas.lendacky@amd.com" , "tony.luck@intel.com" , "x86@kernel.org" , "bp@alien8.de" , "dgilbert@redhat.com" , "seanjc@google.com" , "vkuznets@redhat.com" , "marcorr@google.com" , "vbabka@suse.cz" , "linux-coco@lists.linux.dev" , "nikunj.dadhania@amd.com" , "hpa@zytor.com" , "mingo@redhat.com" , "sathyanarayanan.kuppuswamy@linux.intel.com" , "jroedel@suse.de" , "kirill@shutemov.name" , "jarkko@kernel.org" , "ardb@kernel.org" , "linux-crypto@vger.kernel.org" , "linux-mm@kvack.org" , "dave.hansen@linux.intel.com" References: From: "Kalra, Ashish" In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-ClientProxiedBy: BYAPR02CA0004.namprd02.prod.outlook.com (2603:10b6:a02:ee::17) To SN6PR12MB2767.namprd12.prod.outlook.com (2603:10b6:805:75::23) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: SN6PR12MB2767:EE_|SN7PR12MB6670:EE_ X-MS-Office365-Filtering-Correlation-Id: 88905f3c-4a4c-49db-1989-08db94866813 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:SN6PR12MB2767.namprd12.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230028)(4636009)(136003)(346002)(376002)(39860400002)(396003)(366004)(451199021)(1800799003)(186006)(2906002)(41300700001)(316002)(7416002)(7406005)(5660300002)(8676002)(8936002)(31696002)(36756003)(86362001)(6512007)(966005)(6506007)(53546011)(26005)(478600001)(6486002)(6666004)(2616005)(31686004)(4326008)(66946007)(66556008)(66476007)(110136005)(54906003)(38100700002)(45980500001)(43740500002);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?utf-8?B?NWtvNlJ6ZkQyLzlNcThJcU95M08zOUZNNHNYMGthU1NYcnZMYVFsWlgweE16?= =?utf-8?B?SmRjcUhjd0VyZFJNQkpMRWJTOXlmVGQyVmI1bmNabzRqVitwbThNMjV1K29x?= =?utf-8?B?cHIwaHJscklHUGhVRDlGOWtkbWNrZUpvWTFBcnAwMTZRbEZmQml5NHo4ZFlz?= =?utf-8?B?NG1BWG9mazFaRGZIakpCVkJ5WHgyTUhld0xnUkM5Y080Sk96WHErdEl0UjZr?= =?utf-8?B?NDFyeWtxdm5iTXp0cVp5WXlxU00yYXFWemQ1V1dPL00wK2Z5ZjJxVElRNk1P?= =?utf-8?B?b29TSVVQL3lnejV2ay94TUVSNFZERENyamFDa0UwUEhvN09iMk1URmdSTmVI?= =?utf-8?B?Vnd1NVMrSTRCMDZpdTNZVTdDUDZuWVFwcnJOSVdRK1UrdzZ3Wlk0c2FwWTJM?= =?utf-8?B?UUFyRTBJOEt2aGdCZG82UENvUGFITE9pU2dUeGI2S2hkYmhHd3B6RllmdEhN?= =?utf-8?B?S05nOTFsREdWeUFGQXBMUW14Nk96dFRjM09DL2NxaDZubDJjaWdkSVJkNmdQ?= =?utf-8?B?NWhpTUsyajlXdDkvQzVGVGVlUEpodUg5VTJMRVFuZ1Q3S2JsT1Fqd3d2Rlky?= =?utf-8?B?Nkg1NnlidEVvWEhRNEZOY3BjcVoxNjB6MEFkQlphS1ZJSlUwTUl4UTRXaVZV?= =?utf-8?B?OGVYZjRPdm5rUkdTMEZiSlJvRWZJWmx3TEQrQVdnVjBEZEVORUFXeHhZS05i?= =?utf-8?B?WXhMbS9pMnFWUUI0dGdKREJrWGc4NmwrU0dsSzB0c3l2dlUrWG9GKzFpRXpi?= =?utf-8?B?Nmh0OEk5cmVSRTZNaVR1WVZ3bkMyTVNudm9KaHlnbU9yMDRsNzlBNGQwQ3FQ?= =?utf-8?B?dFlaaGpQM3BwRGpVYUF6TEVWelNLdlpIN1RtbC9xSUlxRG9hSEU2N1JMTXNu?= =?utf-8?B?MldKYjE2SVd0ZWJwNFY4TnA4R0RydlpzOTQ5cEZyM3JVZUpZdzgxdDlBS25B?= =?utf-8?B?YW5QU1BFa2M0UytCNXBRWlphSnFqbDBiWW0rb2JRWmt6QWEvQ1IvWG1Ib3M1?= =?utf-8?B?MUVLTittbmtkV1FLdzJqbDJUOHpDSGFGcjZuUVFWRWVWRDZaT1NxNE1MMThv?= =?utf-8?B?WTBUWGxyb2FhZXp0SnAzTCtBbEtCWXEzYUFGK1NGWkJLL25SR1UzK2ZZV3BG?= =?utf-8?B?aDNKUDM4eC9qMi9Yb3I3QTFnSWZZTWVFSStnY1o1cjFGZXMvTGsvSXZXYXZP?= =?utf-8?B?VTZmcFBWbnFYMURZSWNMaHdCSGNrV0t2UGpNZVRzVTh4UVVzM2FLWTVhUmNk?= =?utf-8?B?dUFJMGtYbEdxWW4zdHNkcStJMmM5QUdyOEJ6Z1dyU0tlM3l0dmE5TnlSTXlL?= =?utf-8?B?YnJjMWdnYjVPNjVBVXZKU1BtNHFkcWwwQnJGMnVQZTY3MG1leGxiMW1oMnIz?= =?utf-8?B?cE4yMGFGcllQVGxLUEdYb1M1TEl4MkZ2YVhHOTdGdEMvY0N3Z1pOTjRGWnp6?= =?utf-8?B?aEVSeHJaVXV6bGZWQnZwQVc2dnhITzVFWVBJRGNUTnRFR3EyYVpmSy9raDh2?= =?utf-8?B?dHl1VTc0dmZLNm94L3AwQ21MRG1ueS9yTmR6WjlTWmh6bGZYZ2YxQzRENGI4?= =?utf-8?B?YWduOVcya1B1UWY5SytkanZpai9PSHNOYkVTSFk3Y3Y1SWV1RVB4SFpnSkpM?= =?utf-8?B?ZGp0YkJuT3N3NCtiVWdHU2tKSVcyOVkzekc4alM0TW9kcDRQTmNjUC80SWY4?= =?utf-8?B?UWtTRGx4Yzc4OGxKWURzYmg1MWZwbnFoa2x5QmVZY1ZlUHd5bWtYbUJTMUtO?= =?utf-8?B?N2xGSm9mdVcwdTByUnhCcGpQQzNBbE9NZzVCb0t6TndoTDFVTG1qaWlLQkFa?= =?utf-8?B?TmNVdG56SEhFZG96YnYxRzEzRUVhOWlmdWVKZjRqR01TVUtTSnUzSFlKNTI2?= =?utf-8?B?REdxREMySk9VUHlXWjc5ekZ1dlpTV0g2dDRmMkhSaVY2MWo0M0t0VzcrRWtJ?= =?utf-8?B?SVo4bmZpSUJ2TWp2QVNKeDl1VXVITmJCMGxCMm5YYm9ZQ3JQTzZNRVh4SSsr?= =?utf-8?B?MkRmQlNTVlZVOEF4WnhWOExITUFWcHZMaFF1dS82UTNmS1JDbksxb0Qwb2VZ?= =?utf-8?B?UzI2dzg2RGQxcjdoVjZjVzVMYjFVS1FGbEZrQXB5Nk9FSFNTUUpycmlxRURC?= =?utf-8?Q?1omrkl0jwpOsVFfy1kHB+oIAM?= X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-Network-Message-Id: 88905f3c-4a4c-49db-1989-08db94866813 X-MS-Exchange-CrossTenant-AuthSource: SN6PR12MB2767.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 04 Aug 2023 01:02:00.0368 (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: OVnkSaxuwYo/BQ6i/YAc2XbzIZ2KZU4vipQVlwk4rwQ/dtUkmgunwYQ6DxpjyklToXrqpzXJZb8AhKTXBthMuA== X-MS-Exchange-Transport-CrossTenantHeadersStamped: SN7PR12MB6670 Precedence: bulk List-ID: X-Mailing-List: linux-crypto@vger.kernel.org Please look at the response on github and followup discussion. Thanks, Ashish On 8/3/2023 1:27 PM, Schander, Johanna 'Mimoja' Amelie wrote: > We discovered that the kdump crashkernel would not work with our SEV- > SNP configuration. > > After reading the device table from the previour kernel we would > see a lot of > AMD-Vi: Completion-Wait loop timed out > errors and finally crash: > Kernel panic - not syncing: timer doesn't work through Interrupt- > remapped IO-APIC > > We found that disabeling SNP in the outgoing (crashing) kernel > would enable the crashkernel to take over the iommu config and > boot from there. > > We opened a PR over on github against the rfc-v9 branch to discuss > the issue: > https://github.com/AMDESE/linux/pull/5 > > Cheers Johanna > > > > > > > > Amazon Development Center Germany GmbH > Krausenstr. 38 > 10117 Berlin > Geschaeftsfuehrung: Christian Schlaeger, Jonathan Weiss > Eingetragen am Amtsgericht Charlottenburg unter HRB 149173 B > Sitz: Berlin > Ust-ID: DE 289 237 879 > >