diff options
Diffstat (limited to 'arch/arm/Kconfig.debug')
| -rw-r--r-- | arch/arm/Kconfig.debug | 25 |
1 files changed, 24 insertions, 1 deletions
diff --git a/arch/arm/Kconfig.debug b/arch/arm/Kconfig.debug index 681ecd570e52..1e74af36555a 100644 --- a/arch/arm/Kconfig.debug +++ b/arch/arm/Kconfig.debug @@ -76,6 +76,29 @@ config DEBUG_USER 8 - SIGSEGV faults 16 - SIGBUS faults +config FORCE_PAGES + bool "Force lowmem to be mapped with 4K pages" + help + There are some advanced debug features that can only be done when + memory is mapped with pages instead of sections. Enable this option + to always map lowmem pages with pages. This may have a performance + cost due to increased TLB pressure. + + 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 bool "Kernel low-level debugging functions (read help!)" @@ -1607,7 +1630,7 @@ config DEBUG_UNCOMPRESS config UNCOMPRESS_INCLUDE string default "debug/uncompress.h" if ARCH_MULTIPLATFORM || ARCH_MSM || \ - PLAT_SAMSUNG || ARM_SINGLE_ARMV7M + ARCH_QCOM || PLAT_SAMSUNG || ARM_SINGLE_ARMV7M default "mach/uncompress.h" config EARLY_PRINTK |