--- zzzz-none-000/linux-3.10.107/arch/mips/lib/strncpy_user.S	2017-06-27 09:49:32.000000000 +0000
+++ vr9-7490-729/linux-3.10.107/arch/mips/lib/strncpy_user.S	2021-11-10 11:53:54.000000000 +0000
@@ -28,6 +28,37 @@
  * it happens at most some bytes of the exceptions handlers will be copied.
  */
 
+LEAF(__strncpy_from_kernel_asm)
+	LONG_L		v0, TI_ADDR_LIMIT($28)	# pointer ok?
+	and		v0, a1
+	bnez		v0, .Lfault
+
+FEXPORT(__strncpy_from_kernel_nocheck_asm)
+	.set		noreorder
+	move		t0, zero
+	move		v1, a1
+1:      EX(lbu, v0, (v1), .Lfault)
+	PTR_ADDIU       v1, 1
+	R10KCBARRIER(0(ra))
+	beqz		v0, 2f
+	 sb		v0, (a0)
+	PTR_ADDIU	t0, 1
+	bne		t0, a2, 1b
+	 PTR_ADDIU	a0, 1
+2:	PTR_ADDU	v0, a1, t0
+	xor		v0, a1
+	bltz		v0, .Lfault
+	 nop
+	jr		ra			# return n
+	 move           v0, t0
+	END(__strncpy_from_kernel_asm)
+
+.Lfault:
+	jr              ra
+	 li             v0, -EFAULT
+
+#ifdef CONFIG_EVA
+
 LEAF(__strncpy_from_user_asm)
 	LONG_L		v0, TI_ADDR_LIMIT($28)	# pointer ok?
 	and		v0, a1
@@ -37,8 +68,10 @@
 	.set		noreorder
 	move		t0, zero
 	move		v1, a1
-1:	EX(lbu, v0, (v1), .Lfault)
-	PTR_ADDIU	v1, 1
+1:
+	.set            eva
+	EX(lbue, v0, (v1), .Lfault)
+	PTR_ADDIU       v1, 1
 	R10KCBARRIER(0(ra))
 	beqz		v0, 2f
 	 sb		v0, (a0)
@@ -50,12 +83,7 @@
 	bltz		v0, .Lfault
 	 nop
 	jr		ra			# return n
-	 move		v0, t0
+	 move           v0, t0
 	END(__strncpy_from_user_asm)
 
-.Lfault: jr		ra
-	  li		v0, -EFAULT
-
-	.section	__ex_table,"a"
-	PTR		1b, .Lfault
-	.previous
+#endif