--- zzzz-none-000/linux-3.10.107/arch/x86/include/asm/mmu.h	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/arch/x86/include/asm/mmu.h	2021-02-04 17:41:59.000000000 +0000
@@ -9,8 +9,9 @@
  * we put the segment information here.
  */
 typedef struct {
-	void *ldt;
-	int size;
+#ifdef CONFIG_MODIFY_LDT_SYSCALL
+	struct ldt_struct *ldt;
+#endif
 
 #ifdef CONFIG_X86_64
 	/* True if mm supports a task running in 32 bit compatibility mode. */
@@ -18,7 +19,9 @@
 #endif
 
 	struct mutex lock;
-	void *vdso;
+	void __user *vdso;
+
+	atomic_t perf_rdpmc_allowed;	/* nonzero if rdpmc is allowed */
 } mm_context_t;
 
 #ifdef CONFIG_SMP