Hanjun Guo of Huawei submitted a 12-part patch to the Linux-ACPI, Linux-ARM-Kernel, and Linux-Kernel lists, which adds ACPU NUMA (Non-Uniform Memory Access) support for AArch64 systems.
Based on Ganapat’s v9 dt based NUMA patch set  for ARM64, this patch set introduce the ACPI based configuration to provide NUMA information. ACPI 5.1 already introduced NUMA support for ARM64, which can get the NUMA domain information from SRAT and SLIT table, so parse those two tables to get mappings from cpu/mem to numa node configration and system locality.
acpi, numa: Use pr_fmt() instead of printk
acpi, numa: Replace ACPI_DEBUG_PRINT() with pr_debug()
acpi, numa: remove duplicate NULL check
acpi, numa: introduce ACPI_HAS_NUMA_ARCH_FIXUP
arm64, acpi, numa: NUMA support based on SRAT and SLIT
acpi, numa: Enable ACPI based NUMA on ARM64
acpi, numa: move acpi_numa_slit_init() to common place
arm64, numa: rework numa_add_memblk()
x86, acpi, numa: cleanup acpi_numa_processor_affinity_init()
acpi, numa: move bad_srat() and srat_disabled() to common place
acpi, numa: remove unneeded acpi_numa=1
acpi, numa: reuse acpi_numa_memory_affinity_init()