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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2F635C433F5 for ; Thu, 18 Nov 2021 17:51:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0E10B61A52 for ; Thu, 18 Nov 2021 17:51:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234231AbhKRRyA (ORCPT ); Thu, 18 Nov 2021 12:54:00 -0500 Received: from mx0b-00069f02.pphosted.com ([205.220.177.32]:57638 "EHLO mx0b-00069f02.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234199AbhKRRxq (ORCPT ); Thu, 18 Nov 2021 12:53:46 -0500 Received: from pps.filterd (m0246632.ppops.net [127.0.0.1]) by mx0b-00069f02.pphosted.com (8.16.1.2/8.16.1.2) with SMTP id 1AIHhWLP000708; Thu, 18 Nov 2021 17:50:17 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : content-transfer-encoding : content-type : mime-version; s=corp-2021-07-09; bh=GLwmuQX0t0oCyvZLY71nMC5sQAcr5iAf4s9G1PtXNaw=; b=gA9ch8ngiJQcgQmDllLvtZGWXNJfH6Xm7NWXiVT8TOW91CqtC5Ikf4/WV6zOFM43r5oP 2Lq37JKpx4CZCmBw2A5aLwBSCrcGpc5lyGe0ra0Vu6ydk7cf2eMYGJsDLqhNyqkKCZPC gte9e7LTOA3/r7Ez+/NixKJmxt9Rv9cnNZzODKqnf5InpOPvaEPl5MpsN4nuWd89+PQA m+rKzkk7ElXIzNTOGrYL5qxVJrWZ9R7NlI0vw5XMgfCoh0+okooUxpTDewZBcmB3QLlN rM3EUdjwuJrJLSKFT3nsnO42jl7nk7vskpZzlyz6jtfH8cYvC8MrPI9tw9bJBf8wVIpZ Yw== Received: from userp3030.oracle.com (userp3030.oracle.com [156.151.31.80]) by mx0b-00069f02.pphosted.com with ESMTP id 3cd205hh4x-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 18 Nov 2021 17:50:16 +0000 Received: from pps.filterd (userp3030.oracle.com [127.0.0.1]) by userp3030.oracle.com (8.16.1.2/8.16.1.2) with SMTP id 1AIHkJ1t102670; Thu, 18 Nov 2021 17:50:13 GMT Received: from nam11-dm6-obe.outbound.protection.outlook.com (mail-dm6nam11lp2173.outbound.protection.outlook.com [104.47.57.173]) by userp3030.oracle.com with ESMTP id 3ca2g0vm7r-2 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 18 Nov 2021 17:50:12 +0000 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=U5NaEv7ZE0rjaVnxG5L1NWdXeC0itLrgFoNY+iY2s2kPuAtR5LfvHQsVlhpwYd+Gy/VlrlkXJr2mQ2r8ucl6y2n9voulkx/0aUOgRriCKBEyJx0KD3SsnPG9UjwDoLhppw8T2ZwyhtQb9ctrK4SU4g1b7agOUA2cDrb4R2MSDqpEuoJeS/OkH/EupxgbnYJb/Q0nqo3oXbUhKi5nlgBYGZoPRP6qzX72yrcXcLemYc4Vci6WcT6GWC1OOgmpSWBw6rQPIsohKDKx/XBHxn0khvsO3XuhN7ZiGnBJy5MFLFaG3jeEeIY3Q+Ugtutc7bw5q/6R54DBPgCzWEERi+SE9A== 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=GLwmuQX0t0oCyvZLY71nMC5sQAcr5iAf4s9G1PtXNaw=; b=FBZn+KXc/x36zmsevR0P0wyEGIQMpaDkeucYbCEN9jcOWGCEUfXQcBNgt/5cAvyhuK1BKZbx7QbyRo91pcfSQEE3U5cLLob2lPBEosRHjDjW6WKRCq3obMFQNtOBqdMKK60fZAvEFYodrx9j/FvvBWwA+hv7YDRIAfl9Lt0xewBv8L2IHgKe4cMiOO62rypOmI5yhOelM+kr5rl9/+xX63Xir95aRil+eMDwjiLX3rk/fyKS/N5e3aYRFV1uELTu1UedCnC8KJ+XEn1KLbUsAhZKHUNscybw45J15JkePxnqDR5GadToYxu+CRi98YVvkrJ3of+I6rcZECOogD5xlA== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=oracle.com; dmarc=pass action=none header.from=oracle.com; dkim=pass header.d=oracle.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.onmicrosoft.com; s=selector2-oracle-onmicrosoft-com; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=GLwmuQX0t0oCyvZLY71nMC5sQAcr5iAf4s9G1PtXNaw=; b=kQ0D1oT+/d16A0eFdHjS0z0JeRNmPErGFVJuArdT7psZlnardVprr4PijwQFABbKcM+2m0Go4HZfDq4YwDRsv0s8JPHAT2TTv766k0NQVbTGhktoHwVbqg6UQzfiLAOI8IIWaxCmlnqdkqMwy2Wpi+Z4l2IZcE6fRSCF7umprbE= Received: from CO1PR10MB4531.namprd10.prod.outlook.com (2603:10b6:303:6c::22) by MWHPR10MB1389.namprd10.prod.outlook.com (2603:10b6:300:21::22) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4713.19; Thu, 18 Nov 2021 17:50:10 +0000 Received: from CO1PR10MB4531.namprd10.prod.outlook.com ([fe80::90ef:e061:a4c2:acd6]) by CO1PR10MB4531.namprd10.prod.outlook.com ([fe80::90ef:e061:a4c2:acd6%8]) with mapi id 15.20.4713.022; Thu, 18 Nov 2021 17:50:10 +0000 From: Eric DeVolder To: linux-kernel@vger.kernel.org, x86@kernel.org, kexec@lists.infradead.org, ebiederm@xmission.com, dyoung@redhat.com, bhe@redhat.com, vgoyal@redhat.com Cc: tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, dave.hansen@linux.intel.com, hpa@zytor.com, nramas@linux.microsoft.com, thomas.lendacky@amd.com, robh@kernel.org, efault@gmx.de, rppt@kernel.org, konrad.wilk@oracle.com, boris.ostrovsky@oracle.com, eric.devolder@oracle.com Subject: [RFC v1 2/8] crash hp: Introduce CRASH_HOTPLUG configuration options Date: Thu, 18 Nov 2021 12:49:42 -0500 Message-Id: <20211118174948.37435-3-eric.devolder@oracle.com> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20211118174948.37435-1-eric.devolder@oracle.com> References: <20211118174948.37435-1-eric.devolder@oracle.com> Content-Transfer-Encoding: 8bit Content-Type: text/plain X-ClientProxiedBy: SA9PR13CA0124.namprd13.prod.outlook.com (2603:10b6:806:27::9) To CO1PR10MB4531.namprd10.prod.outlook.com (2603:10b6:303:6c::22) MIME-Version: 1.0 Received: from localhost.localdomain (138.3.201.23) by SA9PR13CA0124.namprd13.prod.outlook.com (2603:10b6:806:27::9) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4734.7 via Frontend Transport; Thu, 18 Nov 2021 17:50:07 +0000 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: bf6e3e0e-7b8c-4010-7092-08d9aabbdd57 X-MS-TrafficTypeDiagnostic: MWHPR10MB1389: X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:6790; 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:CO1PR10MB4531.namprd10.prod.outlook.com;PTR:;CAT:NONE;SFS:(366004)(83380400001)(38350700002)(6512007)(8676002)(38100700002)(2616005)(8936002)(6486002)(52116002)(7416002)(36756003)(316002)(26005)(6666004)(4326008)(5660300002)(956004)(86362001)(508600001)(186003)(66476007)(1076003)(6506007)(66946007)(2906002)(107886003)(66556008);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?us-ascii?Q?U+r02a2cdpp6+uoq1SheSXNaJ+cH2mmnQlH41ojr/AcfIZ8IB5t7h71byIGl?= =?us-ascii?Q?Ubc+sGfi/it+9pE1GNKfE9o903+2P4DZe5p3Fg/s+rNBQeIeuT8eE7IvPSUZ?= =?us-ascii?Q?1esAWtdQZ8klnCuWlz6c5mfvfLArw+tyxep76Q18Eu4wHGW21NhIFS+aFfYH?= =?us-ascii?Q?zp1kSFIKc6/gtbm3w/GxbRamOjFrbvfeVkKYpHYVcGt+EWsXS/DzaBmc1n0e?= =?us-ascii?Q?mcEKi/usOnCnImZg3lRDLjrdYrZhUe9dRKzRiR2bHOLsBSZ4kQxDUqxntCIQ?= =?us-ascii?Q?RIHg8TKu04Uxyp9nnlsLfmZcbDr0dI3EqbPActrN0LXA3zZvDLBjXzoaO8P0?= =?us-ascii?Q?eYKwy15R+O18xdqzsIemZZK+/mrsPWiiQ5zzCVDrSgY69S+tYd+c8jqlK/Ae?= =?us-ascii?Q?a1c3xo9Ns2gqZCJ0ktz5b3QLVQALGKj3Xq8LHYWakQuJctcCzk2vTYgNMjyH?= =?us-ascii?Q?xYd4YSjHwvOQ6a6LBR70u+vCLgF+hi1E6KMS8DaLIwGxHNcffm0AwVBS3mkT?= =?us-ascii?Q?+cVIoKtgAhMpX8SnFs6hfi2OZSH1HjnIxKQjw2pv+CWK+RiBP+kytYkzu7FO?= =?us-ascii?Q?aJftIZQy0cZ0yJTLyFPVDqTeb9ixEOWVwh10kFGxSQ4BcpGOY85mJLNy+8EY?= =?us-ascii?Q?7yvceKeFpI8tJbMGjlXjDeJqkEUD9KMGvuK7m1lYAIm9rEPO8aIdvhUNyMLh?= =?us-ascii?Q?13UmK1He/duSLRMTHkDSfNkYNOUYcii07fh2utOHCY8Ke46YmtJtkSqzzNJK?= =?us-ascii?Q?T3dKS0ED/ick3AF7bFG/5gJs3qw3wv02P7eoCkgDHLh6JIIn+C67BS01VHsb?= =?us-ascii?Q?drhuJhtB4+KpZ9HvJX7cOaT3rkO7kVKn3NPFdCHw4RXlR890Q7GwVxrb7Cr/?= =?us-ascii?Q?6GGfeWa6nWpzQfielvyhvt6My/wiW/AM6PsP6Zl07g/5VD9t7bhjhph1KTOg?= =?us-ascii?Q?H5+uF9eoUQTjKSn2nIaE30EmjPLEpOnYEVDUyP7TcTVKk7s3jFjeCpWHD7LF?= =?us-ascii?Q?2iq6ZxKEvHZ/tr613QX4sYT7DxkK00PyY6y06HAiSoEWs5O0OHY0ZqFFrG++?= =?us-ascii?Q?xJx/0y7hNLGiLVU3JzYhC78fTGSDp9Z98UMjfOJp+VliP63f4WPeGJziIZpr?= =?us-ascii?Q?ZCDKzcyMj597VCb5211+2aPLD3dAGfUNDalcEDaeCGwsV6t1uyZkLBRoeQr2?= =?us-ascii?Q?EWvNKvoF6FLRfrqIFYcXK1vLs3dUQYNyovWzj1p3YxY+paXqI7WCbj03mCMd?= =?us-ascii?Q?piIYFIZycSkRhavJEwYBNviy1sTpA8I9fub0QFlL9RH4vJ2ybKuoXFmG6F4g?= =?us-ascii?Q?E9KqYcfkDZu+jcb6ZVJd3T+bzXqrZAkbPyi5+EspgXnEk0X2VX3ge1b2Kddr?= =?us-ascii?Q?zAHJ0DI2JEEy9qbRJhVafH2B9dajMo0JCW5Judg5IRRAv6oFx1yvW1FYPoyb?= =?us-ascii?Q?ZPKHOnggd6BL3FRkwGxZf8f9EaxAllVUd3K9zg1sU1l1vH3AmOVB7wfOvGX+?= =?us-ascii?Q?GSx1vS/EN+dCdFvttlJCSc1UndE4Vi9Q1b3+p6RUS8twOjwK1VILIqq21QD5?= =?us-ascii?Q?62DLbXYpDKMxw0ih54AAuXtWPkfRQvxFANlLUHiseEk+NEtMbvpO/5/6TqNq?= =?us-ascii?Q?vypPy1nL9LEJ5mt303muDCaDWrXOeKC4X5OiHpoJgkye1Briifksw2LYCspi?= =?us-ascii?Q?vt1Hxw=3D=3D?= X-OriginatorOrg: oracle.com X-MS-Exchange-CrossTenant-Network-Message-Id: bf6e3e0e-7b8c-4010-7092-08d9aabbdd57 X-MS-Exchange-CrossTenant-AuthSource: CO1PR10MB4531.namprd10.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 18 Nov 2021 17:50:10.0549 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 4e2c6054-71cb-48f1-bd6c-3a9705aca71b X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: lz+p5kue/3T6Xo23tFMXOTYupWmDXvsumLpZcPxDh7avSBjgGYzSlZVlEyxo6XU7NTpPdvcxIL0lN4BHarjFkq22a4MLN8g7+MIFLcz0sJ0= X-MS-Exchange-Transport-CrossTenantHeadersStamped: MWHPR10MB1389 X-Proofpoint-Virus-Version: vendor=nai engine=6300 definitions=10172 signatures=668683 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 spamscore=0 phishscore=0 bulkscore=0 adultscore=0 mlxlogscore=999 malwarescore=0 mlxscore=0 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2110150000 definitions=main-2111180093 X-Proofpoint-ORIG-GUID: V3w9cCpEWrW60x4VFdi2TS1YhS-Lj9D9 X-Proofpoint-GUID: V3w9cCpEWrW60x4VFdi2TS1YhS-Lj9D9 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The bulk of the support for CPU and memory hotplug support for crash is controlled by the CRASH_HOTPLUG configuration option, introduced by this patch. The CRASH_HOTPLUG_ELFCOREHDR_SZ related configuration option is also introduced with this patch. Signed-off-by: Eric DeVolder --- arch/x86/Kconfig | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 95dd1ee01546..5feb829adb60 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -2046,6 +2046,32 @@ config CRASH_DUMP (CONFIG_RELOCATABLE=y). For more details see Documentation/admin-guide/kdump/kdump.rst +config CRASH_HOTPLUG + bool "kernel updates of crash elfcorehdr" + depends on CRASH_DUMP && (HOTPLUG_CPU || MEMORY_HOTPLUG) && KEXEC_FILE + help + Enable the kernel to update the crash elfcorehdr (which contains + the list of CPUs and memory regions) directly when hot plug/unplug + of CPUs or memory. Otherwise userspace must monitor these hot + plug/unplug change notifications via udev in order to + unload-then-reload the crash kernel so that the list of CPUs and + memory regions is kept up-to-date. Note that the udev CPU and + memory change notifications still occur (however, userspace is not + required to monitor for crash dump purposes). + +config CRASH_HOTPLUG_ELFCOREHDR_SZ + depends on CRASH_HOTPLUG + int + default 131072 + help + Specify the maximum size of the elfcorehdr buffer/segment. + The 128KiB default is sized so that it can accommodate 2048 + Elf64_Phdr, where each Phdr represents either a CPU or a + region of memory. + For example, this size can accommodate hotplugging a machine + with up to 1024 CPUs and up to 1024 memory regions (e.g. 1TiB + with 1024 1GiB memory DIMMs). + config KEXEC_JUMP bool "kexec jump" depends on KEXEC && HIBERNATION -- 2.27.0 From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mx0b-00069f02.pphosted.com ([205.220.177.32]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1mnlYY-008UIW-9I for kexec@lists.infradead.org; Thu, 18 Nov 2021 17:50:44 +0000 From: Eric DeVolder Subject: [RFC v1 2/8] crash hp: Introduce CRASH_HOTPLUG configuration options Date: Thu, 18 Nov 2021 12:49:42 -0500 Message-Id: <20211118174948.37435-3-eric.devolder@oracle.com> In-Reply-To: <20211118174948.37435-1-eric.devolder@oracle.com> References: <20211118174948.37435-1-eric.devolder@oracle.com> MIME-Version: 1.0 List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "kexec" Errors-To: kexec-bounces+dwmw2=infradead.org@lists.infradead.org To: linux-kernel@vger.kernel.org, x86@kernel.org, kexec@lists.infradead.org, ebiederm@xmission.com, dyoung@redhat.com, bhe@redhat.com, vgoyal@redhat.com Cc: tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, dave.hansen@linux.intel.com, hpa@zytor.com, nramas@linux.microsoft.com, thomas.lendacky@amd.com, robh@kernel.org, efault@gmx.de, rppt@kernel.org, konrad.wilk@oracle.com, boris.ostrovsky@oracle.com, eric.devolder@oracle.com The bulk of the support for CPU and memory hotplug support for crash is controlled by the CRASH_HOTPLUG configuration option, introduced by this patch. The CRASH_HOTPLUG_ELFCOREHDR_SZ related configuration option is also introduced with this patch. Signed-off-by: Eric DeVolder --- arch/x86/Kconfig | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 95dd1ee01546..5feb829adb60 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -2046,6 +2046,32 @@ config CRASH_DUMP (CONFIG_RELOCATABLE=y). For more details see Documentation/admin-guide/kdump/kdump.rst +config CRASH_HOTPLUG + bool "kernel updates of crash elfcorehdr" + depends on CRASH_DUMP && (HOTPLUG_CPU || MEMORY_HOTPLUG) && KEXEC_FILE + help + Enable the kernel to update the crash elfcorehdr (which contains + the list of CPUs and memory regions) directly when hot plug/unplug + of CPUs or memory. Otherwise userspace must monitor these hot + plug/unplug change notifications via udev in order to + unload-then-reload the crash kernel so that the list of CPUs and + memory regions is kept up-to-date. Note that the udev CPU and + memory change notifications still occur (however, userspace is not + required to monitor for crash dump purposes). + +config CRASH_HOTPLUG_ELFCOREHDR_SZ + depends on CRASH_HOTPLUG + int + default 131072 + help + Specify the maximum size of the elfcorehdr buffer/segment. + The 128KiB default is sized so that it can accommodate 2048 + Elf64_Phdr, where each Phdr represents either a CPU or a + region of memory. + For example, this size can accommodate hotplugging a machine + with up to 1024 CPUs and up to 1024 memory regions (e.g. 1TiB + with 1024 1GiB memory DIMMs). + config KEXEC_JUMP bool "kexec jump" depends on KEXEC && HIBERNATION -- 2.27.0 _______________________________________________ kexec mailing list kexec@lists.infradead.org http://lists.infradead.org/mailman/listinfo/kexec