From patchwork Tue Jul 7 05:59:14 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Justin He X-Patchwork-Id: 11647651 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id B91D960D for ; Tue, 7 Jul 2020 05:59:35 +0000 (UTC) Received: from ml01.01.org (ml01.01.org [198.145.21.10]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 8883320739 for ; Tue, 7 Jul 2020 05:59:35 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 8883320739 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=arm.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-nvdimm-bounces@lists.01.org Received: from ml01.vlan13.01.org (localhost [IPv6:::1]) by ml01.01.org (Postfix) with ESMTP id 4594B1108DEAA; Mon, 6 Jul 2020 22:59:35 -0700 (PDT) Received-SPF: Pass (mailfrom) identity=mailfrom; client-ip=217.140.110.172; helo=foss.arm.com; envelope-from=justin.he@arm.com; receiver= Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by ml01.01.org (Postfix) with ESMTP id 566351108DEA6 for ; Mon, 6 Jul 2020 22:59:33 -0700 (PDT) Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 04F4431B; Mon, 6 Jul 2020 22:59:32 -0700 (PDT) Received: from localhost.localdomain (entos-thunderx2-02.shanghai.arm.com [10.169.212.213]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 486023F68F; Mon, 6 Jul 2020 22:59:27 -0700 (PDT) From: Jia He To: Catalin Marinas , Will Deacon , Dan Williams , Vishal Verma , Dave Jiang Subject: [PATCH v2 0/3] Fix and enable pmem as RAM device on arm64 Date: Tue, 7 Jul 2020 13:59:14 +0800 Message-Id: <20200707055917.143653-1-justin.he@arm.com> X-Mailer: git-send-email 2.17.1 Message-ID-Hash: NYNWSUJQULN34ITQJIS4ACFGULHI2SYX X-Message-ID-Hash: NYNWSUJQULN34ITQJIS4ACFGULHI2SYX X-MailFrom: justin.he@arm.com X-Mailman-Rule-Hits: nonmember-moderation X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation CC: Michal Hocko , Andrew Morton , Mike Rapoport , Baoquan He , Chuhong Yuan , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-nvdimm@lists.01.org, Kaly Xin , Jia He X-Mailman-Version: 3.1.1 Precedence: list List-Id: "Linux-nvdimm developer list." Archived-At: List-Archive: List-Help: List-Post: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 This fix a few issues when I tried to enable pmem as RAM device on arm64. Tested on ThunderX2 host/qemu "-M virt" guest with a nvdimm device. The memblocks from the dax pmem device can be either hot-added or hot-removed on arm64 guest. Changes: v2: - Drop unneccessary patch to harden try_offline_node - Use new solution(by David) to fix dev->target_node=-1 during probing - Refine the mem_hotplug_begin/done patch v1: https://lkml.org/lkml/2020/7/5/381 Jia He (3): arm64/numa: export memory_add_physaddr_to_nid as EXPORT_SYMBOL_GPL device-dax: use fallback nid when numa_node is invalid mm/memory_hotplug: fix unpaired mem_hotplug_begin/done arch/arm64/mm/numa.c | 5 +++-- drivers/dax/kmem.c | 22 ++++++++++++++-------- mm/memory_hotplug.c | 5 ++--- 3 files changed, 19 insertions(+), 13 deletions(-)