If unsure, say N.
+config PAGE_TABLE_CHECK
+ bool "Check for invalid mappings in user page tables"
+ depends on ARCH_SUPPORTS_PAGE_TABLE_CHECK
+ select PAGE_EXTENSION
+ help
+ Check that anonymous page is not being mapped twice with read write
+ permissions. Check that anonymous and file pages are not being
+ erroneously shared. Since the checking is performed at the time
+ entries are added and removed to user page tables, leaking, corruption
+ and double mapping problems are detected synchronously.
+
+ If unsure say "n".
+
+config PAGE_TABLE_CHECK_ENFORCED
+ bool "Enforce the page table checking by default"
+ depends on PAGE_TABLE_CHECK
+ help
+ Always enable page table checking. By default the page table checking
+ is disabled, and can be optionally enabled via page_table_check=on
+ kernel parameter. This config enforces that page table check is always
+ enabled.
+
+ If unsure say "n".
+
config PAGE_POISONING
bool "Poison pages after freeing"
help