linux-kernel - [PATCH v2 0/3] Fix and enable pmem as RAM device on arm64

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Date:   Tue,  7 Jul 2020 13:59:14 +0800
From:   Jia He <justin.he@....com>
To:     Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>,
        Dan Williams <dan.j.williams@...el.com>,
        Vishal Verma <vishal.l.verma@...el.com>,
        Dave Jiang <dave.jiang@...el.com>
Cc:     Michal Hocko <mhocko@...e.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Mike Rapoport <rppt@...ux.ibm.com>,
        Baoquan He <bhe@...hat.com>,
        Chuhong Yuan <hslester96@...il.com>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-mm@...ck.org, linux-nvdimm@...ts.01.org,
        Kaly Xin <Kaly.Xin@....com>, Jia He <justin.he@....com>
Subject: [PATCH v2 0/3] Fix and enable pmem as RAM device on arm64

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(-)

-- 
2.17.1