summaryrefslogtreecommitdiffstats
path: root/Documentation/vm/hwpoison.txt
diff options
context:
space:
mode:
Diffstat (limited to 'Documentation/vm/hwpoison.txt')
-rw-r--r--Documentation/vm/hwpoison.txt16
1 files changed, 14 insertions, 2 deletions
diff --git a/Documentation/vm/hwpoison.txt b/Documentation/vm/hwpoison.txt
index 3ffadf8da61f..f047e75acb23 100644
--- a/Documentation/vm/hwpoison.txt
+++ b/Documentation/vm/hwpoison.txt
@@ -98,10 +98,22 @@ madvise(MADV_POISON, ....)
hwpoison-inject module through debugfs
- /sys/debug/hwpoison/corrupt-pfn
-Inject hwpoison fault at PFN echoed into this file
+/sys/debug/hwpoison/
+corrupt-pfn
+
+Inject hwpoison fault at PFN echoed into this file.
+
+unpoison-pfn
+
+Software-unpoison page at PFN echoed into this file. This
+way a page can be reused again.
+This only works for Linux injected failures, not for real
+memory failures.
+
+Note these injection interfaces are not stable and might change between
+kernel versions
Architecture specific MCE injector