--- zzzz-none-000/linux-3.10.107/arch/x86/um/Kconfig	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/arch/x86/um/Kconfig	2021-02-04 17:41:59.000000000 +0000
@@ -31,6 +31,11 @@
 	def_bool 64BIT
 	select MODULES_USE_ELF_RELA
 
+config ARCH_DEFCONFIG
+	string
+	default "arch/um/configs/i386_defconfig" if X86_32
+	default "arch/um/configs/x86_64_defconfig" if X86_64
+
 config RWSEM_XCHGADD_ALGORITHM
 	def_bool 64BIT