PM / hibernate: introduce "nohibernate" boot parameter

To support using kernel features that are not compatible with hibernation,
this creates the "nohibernate" kernel boot parameter to disable both
hibernation and resume. This allows hibernation support to be a boot-time
choice instead of only a compile-time choice.

Signed-off-by: Kees Cook <keescook@chromium.org>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 6eaa9cdb7094..f8f0466b8b1d 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -2184,6 +2184,8 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
                         in certain environments such as networked servers or
                         real-time systems.
 
+        nohibernate     [HIBERNATION] Disable hibernation and resume.
+
         nohz=           [KNL] Boottime enable/disable dynamic ticks
                         Valid arguments: on, off
                         Default: on
@@ -2980,6 +2982,7 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
                 noresume        Don't check if there's a hibernation image
                                 present during boot.
                 nocompress      Don't compress/decompress hibernation images.
+                no              Disable hibernation and resume.
 
         retain_initrd   [RAM] Keep initrd memory after extraction