--- zzzz-none-000/linux-3.10.107/arch/um/include/asm/processor-generic.h	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/arch/um/include/asm/processor-generic.h	2021-02-04 17:41:59.000000000 +0000
@@ -19,16 +19,14 @@
 struct mm_struct;
 
 struct thread_struct {
-	struct task_struct *saved_task;
 	struct pt_regs regs;
+	struct pt_regs *segv_regs;
 	int singlestep_syscall;
 	void *fault_addr;
 	jmp_buf *fault_catcher;
 	struct task_struct *prev_sched;
-	unsigned long temp_stack;
 	struct arch_thread arch;
 	jmp_buf switch_buf;
-	int mm_count;
 	struct {
 		int op;
 		union {
@@ -52,7 +50,6 @@
 	.regs		   	= EMPTY_REGS,	\
 	.fault_addr		= NULL, \
 	.prev_sched		= NULL, \
-	.temp_stack		= 0, \
 	.arch			= INIT_ARCH_THREAD, \
 	.request		= { 0 } \
 }
@@ -101,16 +98,8 @@
 
 extern struct cpuinfo_um boot_cpu_data;
 
-#define my_cpu_data		cpu_data[smp_processor_id()]
-
-#ifdef CONFIG_SMP
-extern struct cpuinfo_um cpu_data[];
-#define current_cpu_data cpu_data[smp_processor_id()]
-#else
 #define cpu_data (&boot_cpu_data)
 #define current_cpu_data boot_cpu_data
-#endif
-
 
 #define KSTK_REG(tsk, reg) get_thread_reg(reg, &tsk->thread.switch_buf)
 extern unsigned long get_wchan(struct task_struct *p);