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-rw-r--r--mm/Kconfig.debug6
1 files changed, 3 insertions, 3 deletions
diff --git a/mm/Kconfig.debug b/mm/Kconfig.debug
index e5e606ee5f71..9a7b8b049d04 100644
--- a/mm/Kconfig.debug
+++ b/mm/Kconfig.debug
@@ -46,7 +46,8 @@ config PAGE_POISONING
Fill the pages with poison patterns after free_pages() and verify
the patterns before alloc_pages. The filling of the memory helps
reduce the risk of information leaks from freed data. This does
- have a potential performance impact.
+ have a potential performance impact if enabled with the
+ "page_poison=1" kernel boot option.
Note that "poison" here is not the same thing as the "HWPoison"
for CONFIG_MEMORY_FAILURE. This is software poisoning only.
@@ -65,7 +66,7 @@ config PAGE_POISONING_NO_SANITY
say N.
config PAGE_POISONING_ZERO
- bool "Use zero for poisoning instead of random data"
+ bool "Use zero for poisoning instead of debugging value"
depends on PAGE_POISONING
---help---
Instead of using the existing poison value, fill the pages with
@@ -75,7 +76,6 @@ config PAGE_POISONING_ZERO
allocation.
If unsure, say N
- bool
config DEBUG_PAGE_REF
bool "Enable tracepoint to track down page reference manipulation"