On 10.07.20 05:16, Jia He wrote:

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:
v4: - remove "device-dax: use fallback nid when numa_node is invalid", wait
      for Dan Williams' phys_addr_to_target_node() patch

So, this series no longer does what it promises? "Fix and enable pmem as
RAM device on arm64"

-- 
Thanks,

David / dhildenb


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