--- zzzz-none-000/linux-3.10.107/arch/xtensa/Kconfig.debug	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/arch/xtensa/Kconfig.debug	2021-02-04 17:41:59.000000000 +0000
@@ -2,9 +2,19 @@
 
 source "lib/Kconfig.debug"
 
+config DEBUG_TLB_SANITY
+	bool "Debug TLB sanity"
+	depends on DEBUG_KERNEL && MMU
+	help
+	  Enable this to turn on TLB sanity check on each entry to userspace.
+	  This check can spot missing TLB invalidation/wrong PTE permissions/
+	  premature page freeing.
+
+	  If unsure, say N.
+
 config LD_NO_RELAX
 	bool "Disable linker relaxation"
-	default n
+	default y
 	help
 	  Enable this function to disable link-time optimizations.
 	  The default linker behavior is to combine identical literal