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-rw-r--r--arch/arm64/mm/mmu.c17
1 files changed, 17 insertions, 0 deletions
diff --git a/arch/arm64/mm/mmu.c b/arch/arm64/mm/mmu.c
index 674c409a8ce4..da513a1facf4 100644
--- a/arch/arm64/mm/mmu.c
+++ b/arch/arm64/mm/mmu.c
@@ -1046,3 +1046,20 @@ int pud_free_pmd_page(pud_t *pudp, unsigned long addr)
pmd_free(NULL, table);
return 1;
}
+
+#ifdef CONFIG_MEMORY_HOTPLUG
+int arch_add_memory(int nid, u64 start, u64 size, struct vmem_altmap *altmap,
+ bool want_memblock)
+{
+ int flags = 0;
+
+ if (rodata_full || debug_pagealloc_enabled())
+ flags = NO_BLOCK_MAPPINGS | NO_CONT_MAPPINGS;
+
+ __create_pgd_mapping(swapper_pg_dir, start, __phys_to_virt(start),
+ size, PAGE_KERNEL, pgd_pgtable_alloc, flags);
+
+ return __add_pages(nid, start >> PAGE_SHIFT, size >> PAGE_SHIFT,
+ altmap, want_memblock);
+}
+#endif