1menu "Kernel hacking" 2 3source "lib/Kconfig.debug" 4 5config DEBUG_RODATA 6 bool "Write protect kernel read-only data structures" 7 depends on DEBUG_KERNEL 8 help 9 Mark the kernel read-only data as write-protected in the pagetables, 10 in order to catch accidental (and incorrect) writes to such const 11 data. This option may have a slight performance impact because a 12 portion of the kernel code won't be covered by a TLB anymore. 13 If in doubt, say "N". 14 15config DEBUG_STRICT_USER_COPY_CHECKS 16 bool "Strict copy size checks" 17 depends on DEBUG_KERNEL && !TRACE_BRANCH_PROFILING 18 ---help--- 19 Enabling this option turns a certain set of sanity checks for user 20 copy operations into compile time failures. 21 22 The copy_from_user() etc checks are there to help test if there 23 are sufficient security checks on the length argument of 24 the copy operation, by having gcc prove that the argument is 25 within bounds. 26 27 If unsure, or if you run an older (pre 4.4) gcc, say N. 28 29endmenu 30