diff options
Diffstat (limited to 'arch/arm/Kconfig.debug')
| -rw-r--r-- | arch/arm/Kconfig.debug | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/arch/arm/Kconfig.debug b/arch/arm/Kconfig.debug index 815018770fb9..553b02b31847 100644 --- a/arch/arm/Kconfig.debug +++ b/arch/arm/Kconfig.debug @@ -86,6 +86,18 @@ config FORCE_PAGES If unsure say N. +config FREE_PAGES_RDONLY + bool "Set pages as read only while on the buddy list" + select FORCE_PAGES + select PAGE_POISONING + help + Pages are always mapped in the kernel. This means that anyone + can write to the page if they have the address. Enable this option + to mark pages as read only to trigger a fault if any code attempts + to write to a page on the buddy list. This may have a performance + impact. + + If unsure, say N. # These options are only for real kernel hackers who want to get their hands dirty. config DEBUG_LL |