--- zzzz-none-000/linux-3.10.107/arch/mips/include/asm/pgtable-32.h	2017-06-27 09:49:32.000000000 +0000
+++ vr9-7490-729/linux-3.10.107/arch/mips/include/asm/pgtable-32.h	2021-11-10 11:53:54.000000000 +0000
@@ -51,11 +51,13 @@
 
 #define PKMAP_BASE		(0xfe000000UL)
 
+#ifndef VMALLOC_END
 #ifdef CONFIG_HIGHMEM
 # define VMALLOC_END	(PKMAP_BASE-2*PAGE_SIZE)
 #else
 # define VMALLOC_END	(FIXADDR_START-2*PAGE_SIZE)
 #endif
+#endif
 
 #ifdef CONFIG_64BIT_PHYS_ADDR
 #define pte_ERROR(e) \