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: Jia He X-Patchwork-Id: 11647669 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 A1C6D60D for ; Tue, 7 Jul 2020 06:01:28 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (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 782A420702 for ; Tue, 7 Jul 2020 06:01:28 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="wZOYQzOH" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 782A420702 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-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:MIME-Version:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:Message-Id:Date:Subject:To:From:Reply-To:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:In-Reply-To:References:List-Owner; bh=wlnFCRwfc+pTvo89vFxsEErO886FgVCXzexJMOpHlbc=; b=wZOYQzOHHaGM0tMA3lOcBN9uKH NoclmsWqIOF4govoqZaxCwtlBbe0uERa4c7P0M6+g7zingii/3VGIGunqMOdnq7qMhHTkhprx2Srz HMKz4c/OZ5b7Iotx0eKRx+6YyJkXfUY+1foX/PnNod7yXPUBH8wkcxJzIhYNAXkGpCxDCRyNighBZ sa0I09ay30FWKCYj/VILVRqfcZb6+69Qo7kDk9kQnI48iKtcxb7jZs6CMqfoF9coKvpBJ2JHAus09 llmsoHalOcNLEWuyvBwHfFUBU0S4eDkyGQykFLph0V12ujW4jo5pph3pWgT8AzwDTxiguDw/3d2cW 4OC37Prg==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1jsgdq-0007dH-09; Tue, 07 Jul 2020 05:59:42 +0000 Received: from foss.arm.com ([217.140.110.172]) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1jsgdm-0007bn-Gu for linux-arm-kernel@lists.infradead.org; Tue, 07 Jul 2020 05:59:39 +0000 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 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200707_015938_634838_ACDC3715 X-CRM114-Status: UNSURE ( 8.97 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -2.3 (--) X-Spam-Report: SpamAssassin version 3.4.4 on merlin.infradead.org summary: Content analysis details: (-2.3 points) pts rule name description ---- ---------------------- -------------------------------------------------- -2.3 RCVD_IN_DNSWL_MED RBL: Sender listed at https://www.dnswl.org/, medium trust [217.140.110.172 listed in list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Kaly Xin , Michal Hocko , Jia He , Baoquan He , linux-nvdimm@lists.01.org, Chuhong Yuan , linux-kernel@vger.kernel.org, Mike Rapoport , linux-mm@kvack.org, Andrew Morton , linux-arm-kernel@lists.infradead.org MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org 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(-)