--- zzzz-none-000/linux-4.9.276/arch/mips/include/asm/smp.h	2021-07-20 14:21:16.000000000 +0000
+++ falcon-5530-750/linux-4.9.276/arch/mips/include/asm/smp.h	2023-04-05 08:19:00.000000000 +0000
@@ -62,6 +62,7 @@
 extern cpumask_t cpu_coherent_mask;
 
 extern void asmlinkage smp_bootstrap(void);
+extern char smp_bootstrap_end[];
 
 extern void calculate_cpu_foreign_map(void);