diff --git a/arch/arm64/mm/mmu.c b/arch/arm64/mm/mmu.c
index ff9e74045308..6b6b2dac41f5 100644
--- a/arch/arm64/mm/mmu.c
+++ b/arch/arm64/mm/mmu.c
@@ -1164,12 +1164,17 @@ static void __init map_mem(void)
 		flags |= NO_BLOCK_MAPPINGS | NO_CONT_MAPPINGS;
 
 	/*
-	 * Take care not to create a writable alias for the
-	 * read-only text and rodata sections of the kernel image.
-	 * So temporarily mark them as NOMAP to skip mappings in
-	 * the following for-loop
+	 * Map the linear alias of the [_text, __init_begin) interval first
+	 * so that its write permissions can be removed later without the need
+	 * to split any block mappings created by the loop below.
+	 *
+	 * Write permissions are needed for alternatives patching, and will be
+	 * removed later by mark_linear_text_alias_ro() above. This makes the
+	 * contents of the region accessible to subsystems such as hibernate,
+	 * but protects it from inadvertent modification or execution.
 	 */
-	memblock_mark_nomap(kernel_start, kernel_end - kernel_start);
+	__map_memblock(kernel_start, kernel_end, pgprot_tagged(PAGE_KERNEL),
+		       flags);
 
 	/* map all the memory banks */
 	for_each_mem_range(i, &start, &end) {
@@ -1181,17 +1186,6 @@ static void __init map_mem(void)
 		__map_memblock(start, end, pgprot_tagged(PAGE_KERNEL),
 			       flags);
 	}
-
-	/*
-	 * Map the linear alias of the [_text, __init_begin) interval
-	 * as non-executable now, and remove the write permission in
-	 * mark_linear_text_alias_ro() below (which will be called after
-	 * alternative patching has completed). This makes the contents
-	 * of the region accessible to subsystems such as hibernate,
-	 * but protects it from inadvertent modification or execution.
-	 */
-	__map_memblock(kernel_start, kernel_end, PAGE_KERNEL, 0);
-	memblock_clear_nomap(kernel_start, kernel_end - kernel_start);
 }
 
 void mark_rodata_ro(void)