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 X-Spam-Level: X-Spam-Status: No, score=-8.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING,SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 53DE9C10F13 for ; Sun, 14 Apr 2019 05:59:35 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 2A12920693 for ; Sun, 14 Apr 2019 05:59:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1725827AbfDNF73 (ORCPT ); Sun, 14 Apr 2019 01:59:29 -0400 Received: from foss.arm.com ([217.140.101.70]:49562 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725601AbfDNF72 (ORCPT ); Sun, 14 Apr 2019 01:59:28 -0400 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.72.51.249]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id D872280D; Sat, 13 Apr 2019 22:59:27 -0700 (PDT) Received: from p8cg001049571a15.blr.arm.com (p8cg001049571a15.blr.arm.com [10.162.41.123]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 7EC783F557; Sat, 13 Apr 2019 22:59:22 -0700 (PDT) From: Anshuman Khandual To: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mm@kvack.org, akpm@linux-foundation.org, will.deacon@arm.com, catalin.marinas@arm.com Cc: mhocko@suse.com, mgorman@techsingularity.net, james.morse@arm.com, mark.rutland@arm.com, robin.murphy@arm.com, cpandya@codeaurora.org, arunks@codeaurora.org, dan.j.williams@intel.com, osalvador@suse.de, david@redhat.com, cai@lca.pw, logang@deltatee.com, ira.weiny@intel.com Subject: [PATCH V2 0/2] arm64/mm: Enable memory hot remove Date: Sun, 14 Apr 2019 11:29:11 +0530 Message-Id: <1555221553-18845-1-git-send-email-anshuman.khandual@arm.com> X-Mailer: git-send-email 2.7.4 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This series enables memory hot remove on arm64 after fixing a memblock removal ordering problem in generic __remove_memory(). This is based on the following arm64 working tree. git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-next/core Testing: Tested hot remove on arm64 for all 4K, 16K, 64K page config options with all possible VA_BITS and PGTABLE_LEVELS combinations. Build tested on non arm64 platforms. Changes in V2: - Added all received review and ack tags - Split the series from ZONE_DEVICE enablement for better review - Moved memblock re-order patch to the front as per Robin Murphy - Updated commit message on memblock re-order patch per Michal Hocko - Dropped [pmd|pud]_large() definitions - Used existing [pmd|pud]_sect() instead of earlier [pmd|pud]_large() - Removed __meminit and __ref tags as per Oscar Salvador - Dropped unnecessary 'ret' init in arch_add_memory() per Robin Murphy - Skipped calling into pgtable_page_dtor() for linear mapping page table pages and updated all relevant functions Changes in V1: (https://lkml.org/lkml/2019/4/3/28) Anshuman Khandual (2): mm/hotplug: Reorder arch_remove_memory() call in __remove_memory() arm64/mm: Enable memory hot remove arch/arm64/Kconfig | 3 + arch/arm64/include/asm/pgtable.h | 2 + arch/arm64/mm/mmu.c | 221 ++++++++++++++++++++++++++++++++++++++- mm/memory_hotplug.c | 3 +- 4 files changed, 225 insertions(+), 4 deletions(-) -- 2.7.4