--- a/arch/mips/ralink/Kconfig
+++ b/arch/mips/ralink/Kconfig
@@ -51,6 +51,7 @@ choice
select SYS_SUPPORTS_MULTITHREADING
select SYS_SUPPORTS_SMP
select SYS_SUPPORTS_MIPS_CMP
+ select SYS_SUPPORTS_HIGHMEM
select IRQ_GIC
select HW_HAS_PCI