On Thu, Jul 9, 2020 at 8:17 PM Jia He <justin.he@xxxxxxx> 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 FWIW, I put these patches through a 0-day run overnight and will be posting them today.
