diff --git a/arch/x86/mm/init.c b/arch/x86/mm/init.c
index fedde5359a04..4d67c33a2e16 100644
--- a/arch/x86/mm/init.c
+++ b/arch/x86/mm/init.c
@@ -9,6 +9,9 @@
 #include <asm/sections.h>
 #include <asm/system.h>
 #include <asm/tlbflush.h>
+#include <asm/tlb.h>
+
+DEFINE_PER_CPU(struct mmu_gather, mmu_gathers);
 
 unsigned long __initdata e820_table_start;
 unsigned long __meminitdata e820_table_end;
diff --git a/arch/x86/mm/init_32.c b/arch/x86/mm/init_32.c
index a640a7f04905..fef1d90d4f15 100644
--- a/arch/x86/mm/init_32.c
+++ b/arch/x86/mm/init_32.c
@@ -52,7 +52,6 @@
 #include <asm/page_types.h>
 #include <asm/init.h>
 
-DEFINE_PER_CPU(struct mmu_gather, mmu_gathers);
 unsigned long highstart_pfn, highend_pfn;
 
 static noinline int do_test_wp_bit(void);
diff --git a/arch/x86/mm/init_64.c b/arch/x86/mm/init_64.c
index 1016ea015932..6a1a573e20f9 100644
--- a/arch/x86/mm/init_64.c
+++ b/arch/x86/mm/init_64.c
@@ -52,8 +52,6 @@
 
 static unsigned long dma_reserve __initdata;
 
-DEFINE_PER_CPU(struct mmu_gather, mmu_gathers);
-
 static int __init parse_direct_gbpages_off(char *arg)
 {
 	direct_gbpages = 0;