Message ID | b9c98429-f3d7-1e6d-603f-6ac01225e400@linux.vnet.ibm.com (mailing list archive) |
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Return-Path: <linuxppc-dev-bounces+patchwork-incoming=ozlabs.org@lists.ozlabs.org> X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Received: from lists.ozlabs.org (lists.ozlabs.org [203.11.71.2]) (using TLSv1.2 with cipher ADH-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 40rCsm5GJHz9s1b for <patchwork-incoming@ozlabs.org>; Wed, 23 May 2018 10:23:24 +1000 (AEST) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=linux.vnet.ibm.com Received: from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 40rCsm3Zz1zDrCl for <patchwork-incoming@ozlabs.org>; Wed, 23 May 2018 10:23:24 +1000 (AEST) Authentication-Results: lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=linux.vnet.ibm.com X-Original-To: linuxppc-dev@lists.ozlabs.org Delivered-To: linuxppc-dev@lists.ozlabs.org Authentication-Results: lists.ozlabs.org; spf=none (mailfrom) smtp.mailfrom=linux.vnet.ibm.com (client-ip=148.163.158.5; helo=mx0a-001b2d01.pphosted.com; envelope-from=mwb@linux.vnet.ibm.com; receiver=<UNKNOWN>) Authentication-Results: lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=linux.vnet.ibm.com Received: from mx0a-001b2d01.pphosted.com (mx0b-001b2d01.pphosted.com [148.163.158.5]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 40rCqt4sK0zDr2m for <linuxppc-dev@lists.ozlabs.org>; Wed, 23 May 2018 10:21:46 +1000 (AEST) Received: from pps.filterd (m0098419.ppops.net [127.0.0.1]) by mx0b-001b2d01.pphosted.com (8.16.0.22/8.16.0.22) with SMTP id w4N0K45h049988 for <linuxppc-dev@lists.ozlabs.org>; Tue, 22 May 2018 20:21:43 -0400 Received: from e38.co.us.ibm.com (e38.co.us.ibm.com [32.97.110.159]) by mx0b-001b2d01.pphosted.com with ESMTP id 2j4ueuvm5f-1 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=NOT) for <linuxppc-dev@lists.ozlabs.org>; Tue, 22 May 2018 20:21:43 -0400 Received: from localhost by e38.co.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! 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powerpc/hotplug: Fix affinity assoc for LPAR migration
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The migration of LPARs across Power systems affects many attributes including that of the associativity of memory blocks and CPUs. The patches in this set execute when a system is coming up fresh upon a migration target. They are intended to, * Recognize changes to the associativity of memory and CPUs recorded in internal data structures when compared to the latest copies in the device tree (e.g. ibm,dynamic-memory, ibm,dynamic-memory-v2, cpus), * Recognize changes to the associativity mapping (e.g. ibm, associativity-lookup-arrays), locate all assigned memory blocks corresponding to each changed row, and readd all such blocks. * Generate calls to other code layers to reset the data structures related to associativity of the CPUs and memory. * Re-register the 'changed' entities into the target system. Re-registration of CPUs and memory blocks mostly entails acting as if they have been newly hot-added into the target system. Signed-off-by: Michael Bringmann <mwb@linux.vnet.ibm.com> Michael Bringmann (3): powerpc migration/drmem: Modify DRMEM code to export more features powerpc migration/cpu: Associativity & cpu changes powerpc migration/memory: Associativity & memory updates --- Changes in RFC: -- Restructure and rearrange content of patches to co-locate similar or related modifications -- Rename pseries_update_drconf_cpu to pseries_update_cpu -- Simplify code to update CPU nodes during mobility checks. Remove functions to generate extra HP_ELOG messages in favor of direct function calls to dlpar_cpu_readd_by_index, or dlpar_memory_readd_by_index. -- Revise code order in dlpar_cpu_readd_by_index() to present more appropriate error codes from underlying layers of the implementation. -- Add hotplug device lock around all property updates -- Schedule all CPU and memory changes due to device-tree updates / LPAR mobility as workqueue operations -- Export DRMEM accessor functions to parse 'ibm,dynamic-memory-v2' -- Export DRMEM functions to provide user copies of LMB array -- Compress code using DRMEM accessor functions. -- Split topology timer crash fix into new patch. -- Modify DRMEM code to replace usages of dt_root_addr_cells, and dt_mem_next_cell, as these are only available at first boot. -- Correct a bug in DRC index selection for queued operation. -- Rebase to 4.17-rc5 kernel -- Various code cleanups and compaction -- Correct drc_index for worker fn invocation -- Split 'ibm,dynamic-memory-v2' check into separate patch