| Message ID | 20200709020629.91671-1-justin.he@arm.com (mailing list archive) |
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Return-Path: <SRS0=NTWP=AU=lists.01.org=linux-nvdimm-bounces@kernel.org> 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 38A5F13B4 for <patchwork-linux-nvdimm@patchwork.kernel.org>; Thu, 9 Jul 2020 02:06:50 +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 05DFF207D0 for <patchwork-linux-nvdimm@patchwork.kernel.org>; Thu, 9 Jul 2020 02:06:49 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 05DFF207D0 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 C6AC1111399FC; Wed, 8 Jul 2020 19:06:49 -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=<UNKNOWN> Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by ml01.01.org (Postfix) with ESMTP id D4330110CED2C for <linux-nvdimm@lists.01.org>; Wed, 8 Jul 2020 19:06:47 -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 87FBE31B; Wed, 8 Jul 2020 19:06:46 -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 363C73F887; Wed, 8 Jul 2020 19:06:36 -0700 (PDT) From: Jia He <justin.he@arm.com> To: Catalin Marinas <catalin.marinas@arm.com>, Will Deacon <will@kernel.org>, Tony Luck <tony.luck@intel.com>, Fenghua Yu <fenghua.yu@intel.com>, Yoshinori Sato <ysato@users.sourceforge.jp>, Rich Felker <dalias@libc.org>, Dave Hansen <dave.hansen@linux.intel.com>, Andy Lutomirski <luto@kernel.org>, Peter Zijlstra <peterz@infradead.org>, Thomas Gleixner <tglx@linutronix.de>, Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>, David Hildenbrand <david@redhat.com> Subject: [PATCH v3 0/6] Fix and enable pmem as RAM device on arm64 Date: Thu, 9 Jul 2020 10:06:23 +0800 Message-Id: <20200709020629.91671-1-justin.he@arm.com> X-Mailer: git-send-email 2.17.1 Message-ID-Hash: DSXCGYOGWGKYBZXBJNDJXZ5VOALKV5O5 X-Message-ID-Hash: DSXCGYOGWGKYBZXBJNDJXZ5VOALKV5O5 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: x86@kernel.org, "H. Peter Anvin" <hpa@zytor.com>, Andrew Morton <akpm@linux-foundation.org>, Baoquan He <bhe@redhat.com>, Chuhong Yuan <hslester96@gmail.com>, Mike Rapoport <rppt@linux.ibm.com>, Masahiro Yamada <masahiroy@kernel.org>, Michal Hocko <mhocko@suse.com>, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-ia64@vger.kernel.org, linux-sh@vger.kernel.org, linux-nvdimm@lists.01.org, linux-mm@kvack.org, Jonathan Cameron <Jonathan.Cameron@Huawei.com>, Kaly Xin <Kaly.Xin@arm.com>, Jia He <justin.he@arm.com> X-Mailman-Version: 3.1.1 Precedence: list List-Id: "Linux-nvdimm developer list." <linux-nvdimm.lists.01.org> Archived-At: <https://lists.01.org/hyperkitty/list/linux-nvdimm@lists.01.org/message/DSXCGYOGWGKYBZXBJNDJXZ5VOALKV5O5/> List-Archive: <https://lists.01.org/hyperkitty/list/linux-nvdimm@lists.01.org/> List-Help: <mailto:linux-nvdimm-request@lists.01.org?subject=help> List-Post: <mailto:linux-nvdimm@lists.01.org> List-Subscribe: <mailto:linux-nvdimm-join@lists.01.org> List-Unsubscribe: <mailto:linux-nvdimm-leave@lists.01.org> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit |
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Fix and enable pmem as RAM device on arm64
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On Wed, Jul 8, 2020 at 7:06 PM Jia He <justin.he@arm.com> wrote: > > This fixies a few issues when I tried to enable pmem as RAM device on arm64. What NVDIMM bus driver is being used in this case? The ACPI NFIT driver? I'm just looking to see if currently deployed phys_to_target_node() is sufficient, or if this is coming in a new driver?
This fixies a few issues when I tried to enable pmem as RAM device on arm64. To use memory_add_physaddr_to_nid as a fallback nid, it would be better implement a general version (__weak) in mm/memory_hotplug. After that, arm64/ sh/s390 can simply use the general version, and PowerPC/ia64/x86 will use arch specific version. 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. Also passed the compilation test on x86. Changes: v3: - introduce general version memory_add_physaddr_to_nid, refine the arch specific one - fix an uninitialization bug in v2 device-dax patch v2: https://lkml.org/lkml/2020/7/7/71 - Drop unnecessary 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 (6): mm/memory_hotplug: introduce default dummy memory_add_physaddr_to_nid() arm64/mm: use default dummy memory_add_physaddr_to_nid() sh/mm: use default dummy memory_add_physaddr_to_nid() mm: don't export memory_add_physaddr_to_nid in arch specific directory device-dax: use fallback nid when numa_node is invalid mm/memory_hotplug: fix unpaired mem_hotplug_begin/done arch/arm64/mm/numa.c | 10 ---------- arch/ia64/mm/numa.c | 2 -- arch/sh/mm/init.c | 9 --------- arch/x86/mm/numa.c | 1 - drivers/dax/kmem.c | 21 +++++++++++++-------- mm/memory_hotplug.c | 15 ++++++++++++--- 6 files changed, 25 insertions(+), 33 deletions(-)