diff --git a/arch/x86/kernel/head64.c b/arch/x86/kernel/head64.c
index 388e05a5fc17ec05dc68fc881c169608390538b5..b9a4d8c4b93529b3c568c054755d04d1f2534581 100644
--- a/arch/x86/kernel/head64.c
+++ b/arch/x86/kernel/head64.c
@@ -27,7 +27,7 @@
 #include <asm/trampoline.h>
 
 /* boot cpu pda */
-static struct x8664_pda _boot_cpu_pda __read_mostly;
+static struct x8664_pda _boot_cpu_pda;
 
 #ifdef CONFIG_SMP
 /*