--- zzzz-none-000/linux-4.9.276/arch/mips/include/asm/compiler.h	2021-07-20 14:21:16.000000000 +0000
+++ falcon-5530-750/linux-4.9.276/arch/mips/include/asm/compiler.h	2023-04-05 08:19:00.000000000 +0000
@@ -72,7 +72,7 @@
 #else
 /* MIPS64 is a superset of MIPS32 */
 #define MIPS_ISA_LEVEL "mips64r2"
-#define MIPS_ISA_ARCH_LEVEL "arch=r4000"
+#define MIPS_ISA_ARCH_LEVEL "arch=mips64r2"
 #define MIPS_ISA_LEVEL_RAW mips64r2
 #define MIPS_ISA_ARCH_LEVEL_RAW MIPS_ISA_LEVEL_RAW
 #endif /* CONFIG_CPU_MIPSR6 */