Enable Kernel Samepage Merging: KSM periodically scans those areas
of an application's address space that an app has advised may be
mergeable. When it finds pages of identical content, it replaces
- the many instances by a single resident page with that content, so
+ the many instances by a single page with that content, so
saving memory until one or another app needs to modify the content.
Recommended for use with KVM, or with other duplicative applications.
See Documentation/vm/ksm.txt for more information: KSM is inactive
config DEFAULT_MMAP_MIN_ADDR
int "Low address space to protect from user allocation"
+ depends on MMU
default 4096
help
This is the portion of low virtual memory which should be protected
special hardware support and typically ECC memory.
config HWPOISON_INJECT
- tristate "Poison pages injector"
- depends on MEMORY_FAILURE && DEBUG_KERNEL
+ tristate "HWPoison pages injector"
+ depends on MEMORY_FAILURE && DEBUG_KERNEL && PROC_FS
+ select PROC_PAGE_MONITOR
config NOMMU_INITIAL_TRIM_EXCESS
int "Turn on mmap() excess space trimming before booting"