diff --git a/arch/x86/boot/compressed/kaslr.c b/arch/x86/boot/compressed/kaslr.c
index 8199a6187251d0179276c96b5260a2226397ef06..bd69e1830fbe483f492c5895c6013a11024e85f4 100644
--- a/arch/x86/boot/compressed/kaslr.c
+++ b/arch/x86/boot/compressed/kaslr.c
@@ -46,6 +46,10 @@
 #define STATIC
 #include <linux/decompress/mm.h>
 
+#ifdef CONFIG_X86_5LEVEL
+unsigned int pgtable_l5_enabled __ro_after_init = 1;
+#endif
+
 extern unsigned long get_cmd_line_ptr(void);
 
 /* Simplified build-specific string for starting entropy. */
diff --git a/arch/x86/include/asm/pgtable_32_types.h b/arch/x86/include/asm/pgtable_32_types.h
index 0777e18a1d2381c134b95d01efce0931ae8f9bd1..e3225e83db7d44412bb0959e2ae5542200605c1b 100644
--- a/arch/x86/include/asm/pgtable_32_types.h
+++ b/arch/x86/include/asm/pgtable_32_types.h
@@ -15,6 +15,8 @@
 # include <asm/pgtable-2level_types.h>
 #endif
 
+#define pgtable_l5_enabled 0
+
 #define PGDIR_SIZE	(1UL << PGDIR_SHIFT)
 #define PGDIR_MASK	(~(PGDIR_SIZE - 1))
 
diff --git a/arch/x86/include/asm/pgtable_64_types.h b/arch/x86/include/asm/pgtable_64_types.h
index a0db91ab63b8c3875f2548a78852096f80ee07a8..5e2d724f8f472c4753404365cd90283610e7c4b7 100644
--- a/arch/x86/include/asm/pgtable_64_types.h
+++ b/arch/x86/include/asm/pgtable_64_types.h
@@ -20,6 +20,12 @@ typedef unsigned long	pgprotval_t;
 
 typedef struct { pteval_t pte; } pte_t;
 
+#ifdef CONFIG_X86_5LEVEL
+extern unsigned int pgtable_l5_enabled;
+#else
+#define pgtable_l5_enabled 0
+#endif
+
 #endif	/* !__ASSEMBLY__ */
 
 #define SHARED_KERNEL_PMD	0
diff --git a/arch/x86/kernel/head64.c b/arch/x86/kernel/head64.c
index bf5c9ba63ba146b69efdd039997ebfaf2c96c6a1..17d00d1886de0762987631a00ff4de9d5cd107c6 100644
--- a/arch/x86/kernel/head64.c
+++ b/arch/x86/kernel/head64.c
@@ -39,6 +39,11 @@ extern pmd_t early_dynamic_pgts[EARLY_DYNAMIC_PAGE_TABLES][PTRS_PER_PMD];
 static unsigned int __initdata next_early_pgt;
 pmdval_t early_pmd_flags = __PAGE_KERNEL_LARGE & ~(_PAGE_GLOBAL | _PAGE_NX);
 
+#ifdef CONFIG_X86_5LEVEL
+unsigned int pgtable_l5_enabled __ro_after_init = 1;
+EXPORT_SYMBOL(pgtable_l5_enabled);
+#endif
+
 #ifdef CONFIG_DYNAMIC_MEMORY_LAYOUT
 unsigned long page_offset_base __ro_after_init = __PAGE_OFFSET_BASE;
 EXPORT_SYMBOL(page_offset_base);