diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index 1c0cb51..bb4e571 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -268,6 +268,9 @@ config HAVE_GENERIC_GUP
 config ARCH_ENABLE_MEMORY_HOTPLUG
 	def_bool y
 
+config ARCH_ENABLE_MEMORY_HOTREMOVE
+	def_bool y
+
 config SMP
 	def_bool y
 
diff --git a/arch/arm64/mm/mmu.c b/arch/arm64/mm/mmu.c
index 37a902c..bd2d003 100644
--- a/arch/arm64/mm/mmu.c
+++ b/arch/arm64/mm/mmu.c
@@ -733,6 +733,177 @@ int kern_addr_valid(unsigned long addr)
 
 	return pfn_valid(pte_pfn(pte));
 }
+
+#ifdef CONFIG_MEMORY_HOTPLUG
+static void free_hotplug_page_range(struct page *page, ssize_t size)
+{
+	WARN_ON(PageReserved(page));
+	free_pages((unsigned long)page_address(page), get_order(size));
+}
+
+static void free_hotplug_pgtable_page(struct page *page)
+{
+	free_hotplug_page_range(page, PAGE_SIZE);
+}
+
+static void free_pte_table(pte_t *ptep, pmd_t *pmdp, unsigned long addr)
+{
+	struct page *page;
+	int i;
+
+	for (i = 0; i < PTRS_PER_PTE; i++) {
+		if (!pte_none(ptep[i]))
+			return;
+	}
+
+	page = pmd_page(*pmdp);
+	pmd_clear(pmdp);
+	__flush_tlb_kernel_pgtable(addr);
+	free_hotplug_pgtable_page(page);
+}
+
+#if (CONFIG_PGTABLE_LEVELS > 2)
+static void free_pmd_table(pmd_t *pmdp, pud_t *pudp, unsigned long addr)
+{
+	struct page *page;
+	int i;
+
+	for (i = 0; i < PTRS_PER_PMD; i++) {
+		if (!pmd_none(pmdp[i]))
+			return;
+	}
+
+	page = pud_page(*pudp);
+	pud_clear(pudp);
+	__flush_tlb_kernel_pgtable(addr);
+	free_hotplug_pgtable_page(page);
+}
+#else
+static void free_pmd_table(pmd_t *pmdp, pud_t *pudp, unsigned long addr) { }
+#endif
+
+#if (CONFIG_PGTABLE_LEVELS > 3)
+static void free_pud_table(pud_t *pudp, pgd_t *pgdp, unsigned long addr)
+{
+	struct page *page;
+	int i;
+
+	for (i = 0; i < PTRS_PER_PUD; i++) {
+		if (!pud_none(pudp[i]))
+			return;
+	}
+
+	page = pgd_page(*pgdp);
+	pgd_clear(pgdp);
+	__flush_tlb_kernel_pgtable(addr);
+	free_hotplug_pgtable_page(page);
+}
+#else
+static void free_pud_table(pud_t *pudp, pgd_t *pgdp, unsigned long addr) { }
+#endif
+
+static void
+remove_pte_table(pmd_t *pmdp, unsigned long addr,
+			unsigned long end, bool sparse_vmap)
+{
+	struct page *page;
+	pte_t *ptep;
+	unsigned long start = addr;
+
+	for (; addr < end; addr += PAGE_SIZE) {
+		ptep = pte_offset_kernel(pmdp, addr);
+		if (!pte_present(*ptep))
+			continue;
+
+		if (sparse_vmap) {
+			page = pte_page(READ_ONCE(*ptep));
+			free_hotplug_page_range(page, PAGE_SIZE);
+		}
+		pte_clear(&init_mm, addr, ptep);
+	}
+	flush_tlb_kernel_range(start, end);
+}
+
+static void
+remove_pmd_table(pud_t *pudp, unsigned long addr,
+			unsigned long end, bool sparse_vmap)
+{
+	unsigned long next;
+	struct page *page;
+	pte_t *ptep_base;
+	pmd_t *pmdp;
+
+	for (; addr < end; addr = next) {
+		next = pmd_addr_end(addr, end);
+		pmdp = pmd_offset(pudp, addr);
+		if (!pmd_present(*pmdp))
+			continue;
+
+		if (pmd_sect(*pmdp)) {
+			if (sparse_vmap) {
+				page = pmd_page(READ_ONCE(*pmdp));
+				free_hotplug_page_range(page, PMD_SIZE);
+			}
+			pmd_clear(pmdp);
+			continue;
+		}
+		ptep_base = pte_offset_kernel(pmdp, 0UL);
+		remove_pte_table(pmdp, addr, next, sparse_vmap);
+		free_pte_table(ptep_base, pmdp, addr);
+	}
+}
+
+static void
+remove_pud_table(pgd_t *pgdp, unsigned long addr,
+			unsigned long end, bool sparse_vmap)
+{
+	unsigned long next;
+	struct page *page;
+	pmd_t *pmdp_base;
+	pud_t *pudp;
+
+	for (; addr < end; addr = next) {
+		next = pud_addr_end(addr, end);
+		pudp = pud_offset(pgdp, addr);
+		if (!pud_present(*pudp))
+			continue;
+
+		if (pud_sect(*pudp)) {
+			if (sparse_vmap) {
+				page = pud_page(READ_ONCE(*pudp));
+				free_hotplug_page_range(page, PUD_SIZE);
+			}
+			pud_clear(pudp);
+			continue;
+		}
+		pmdp_base = pmd_offset(pudp, 0UL);
+		remove_pmd_table(pudp, addr, next, sparse_vmap);
+		free_pmd_table(pmdp_base, pudp, addr);
+	}
+}
+
+static void
+remove_pagetable(unsigned long start, unsigned long end, bool sparse_vmap)
+{
+	unsigned long addr, next;
+	pud_t *pudp_base;
+	pgd_t *pgdp;
+
+	spin_lock(&init_mm.page_table_lock);
+	for (addr = start; addr < end; addr = next) {
+		next = pgd_addr_end(addr, end);
+		pgdp = pgd_offset_k(addr);
+		if (!pgd_present(*pgdp))
+			continue;
+
+		pudp_base = pud_offset(pgdp, 0UL);
+		remove_pud_table(pgdp, addr, next, sparse_vmap);
+		free_pud_table(pudp_base, pgdp, addr);
+	}
+	spin_unlock(&init_mm.page_table_lock);
+}
+#endif
+
 #ifdef CONFIG_SPARSEMEM_VMEMMAP
 #if !ARM64_SWAPPER_USES_SECTION_MAPS
 int __meminit vmemmap_populate(unsigned long start, unsigned long end, int node,
@@ -780,6 +951,9 @@ int __meminit vmemmap_populate(unsigned long start, unsigned long end, int node,
 void vmemmap_free(unsigned long start, unsigned long end,
 		struct vmem_altmap *altmap)
 {
+#ifdef CONFIG_MEMORY_HOTPLUG
+	remove_pagetable(start, end, true);
+#endif
 }
 #endif	/* CONFIG_SPARSEMEM_VMEMMAP */
 
@@ -1070,10 +1244,16 @@ int p4d_free_pud_page(p4d_t *p4d, unsigned long addr)
 }
 
 #ifdef CONFIG_MEMORY_HOTPLUG
+static void __remove_pgd_mapping(pgd_t *pgdir, unsigned long start, u64 size)
+{
+	WARN_ON(pgdir != init_mm.pgd);
+	remove_pagetable(start, start + size, false);
+}
+
 int arch_add_memory(int nid, u64 start, u64 size, struct vmem_altmap *altmap,
 		    bool want_memblock)
 {
-	int flags = 0;
+	int ret, flags = 0;
 
 	if (rodata_full || debug_pagealloc_enabled())
 		flags = NO_BLOCK_MAPPINGS | NO_CONT_MAPPINGS;
@@ -1081,7 +1261,27 @@ int arch_add_memory(int nid, u64 start, u64 size, struct vmem_altmap *altmap,
 	__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,
+	ret = __add_pages(nid, start >> PAGE_SHIFT, size >> PAGE_SHIFT,
 			   altmap, want_memblock);
+	if (ret)
+		__remove_pgd_mapping(swapper_pg_dir,
+					__phys_to_virt(start), size);
+	return ret;
 }
+
+#ifdef CONFIG_MEMORY_HOTREMOVE
+int arch_remove_memory(int nid, u64 start, u64 size, struct vmem_altmap *altmap)
+{
+	unsigned long start_pfn = start >> PAGE_SHIFT;
+	unsigned long nr_pages = size >> PAGE_SHIFT;
+	struct zone *zone = page_zone(pfn_to_page(start_pfn));
+	int ret = 0;
+
+	ret = __remove_pages(zone, start_pfn, nr_pages, altmap);
+	if (!ret)
+		__remove_pgd_mapping(swapper_pg_dir,
+					__phys_to_virt(start), size);
+	return ret;
+}
+#endif
 #endif
