From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wm0-f69.google.com (mail-wm0-f69.google.com [74.125.82.69]) by kanga.kvack.org (Postfix) with ESMTP id 9BF506B0275 for ; Thu, 23 Nov 2017 06:13:46 -0500 (EST) Received: by mail-wm0-f69.google.com with SMTP id x63so4753592wmf.2 for ; Thu, 23 Nov 2017 03:13:46 -0800 (PST) Received: from mx0a-001b2d01.pphosted.com (mx0b-001b2d01.pphosted.com. [148.163.158.5]) by mx.google.com with ESMTPS id c7si4771217edl.136.2017.11.23.03.13.44 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 23 Nov 2017 03:13:45 -0800 (PST) Received: from pps.filterd (m0098416.ppops.net [127.0.0.1]) by mx0b-001b2d01.pphosted.com (8.16.0.21/8.16.0.21) with SMTP id vANB8xe1007068 for ; Thu, 23 Nov 2017 06:13:44 -0500 Received: from e06smtp13.uk.ibm.com (e06smtp13.uk.ibm.com [195.75.94.109]) by mx0b-001b2d01.pphosted.com with ESMTP id 2edtdcnb8e-1 (version=TLSv1.2 cipher=AES256-SHA bits=256 verify=NOT) for ; Thu, 23 Nov 2017 06:13:43 -0500 Received: from localhost by e06smtp13.uk.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Thu, 23 Nov 2017 11:13:41 -0000 Date: Thu, 23 Nov 2017 11:13:35 +0000 From: Andrea Reale Subject: [PATCH v2 0/5] Memory hotplug support for arm64 - complete patchset v2 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Message-Id: Sender: owner-linux-mm@kvack.org List-ID: To: linux-arm-kernel@lists.infradead.org Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org, m.bielski@virtualopensystems.com, arunks@qti.qualcomm.com, mark.rutland@arm.com, scott.branden@broadcom.com, will.deacon@arm.com, qiuxishi@huawei.com, catalin.marinas@arm.com, mhocko@suse.com, realean2@ie.ibm.com Hi all, this is a second round of patches to introduce memory hotplug and hotremove support for arm64. It builds on the work previously published at [1] and it implements the feedback received in the first round of reviews. The patchset applies and has been tested on commit bebc6082da0a ("Linux 4.14"). Due to a small regression introduced with commit 8135d8926c08 ("mm: memory_hotplug: memory hotremove supports thp migration"), you will need to appy patch [2] first, until the fix is not upstreamed. Comments and feedback are gold. [1] https://lkml.org/lkml/2017/4/11/536 [2] https://lkml.org/lkml/2017/11/20/902 Changes v1->v2: - swapper pgtable updated in place on hot add, avoiding unnecessary copy - stop_machine used to updated swapper on hot add, avoiding races - introduced check on offlining state before hot remove - new memblock flag used to mark partially unused vmemmap pages, avoiding the nasty 0xFD hack used in the prev rev (and in x86 hot remove code) - proper cleaning sequence for p[um]ds,ptes and related TLB management - Removed macros that changed hot remove behavior based on number of pgtable levels. Now this is hidden in the pgtable traversal macros. - Check on the corner case where P[UM]Ds would have to be split during hot remove: now this is forbidden. - Minor fixes and refactoring. Andrea Reale (4): mm: memory_hotplug: Remove assumption on memory state before hotremove mm: memory_hotplug: memblock to track partially removed vmemmap mem mm: memory_hotplug: Add memory hotremove probe device mm: memory-hotplug: Add memory hot remove support for arm64 Maciej Bielski (1): mm: memory_hotplug: Memory hotplug (add) support for arm64 arch/arm64/Kconfig | 15 + arch/arm64/configs/defconfig | 2 + arch/arm64/include/asm/mmu.h | 7 + arch/arm64/mm/init.c | 116 ++++++++ arch/arm64/mm/mmu.c | 609 ++++++++++++++++++++++++++++++++++++++++- drivers/acpi/acpi_memhotplug.c | 2 +- drivers/base/memory.c | 34 ++- include/linux/memblock.h | 12 + include/linux/memory_hotplug.h | 9 +- mm/memblock.c | 32 +++ mm/memory_hotplug.c | 13 +- 11 files changed, 835 insertions(+), 16 deletions(-) -- 2.7.4 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org