--- zzzz-none-000/linux-3.10.107/arch/powerpc/kernel/misc.S	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/arch/powerpc/kernel/misc.S	2021-02-04 17:41:59.000000000 +0000
@@ -114,3 +114,7 @@
 	mtlr	r0
 	mr	r3,r4
 	blr
+
+_GLOBAL(current_stack_pointer)
+	PPC_LL	r3,0(r1)
+	blr