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

Jia He
2020-07-07T05:59:34Z

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(-)

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2.17.1