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linux-next/samples/livepatch
Joe Lawrence 93862e385d livepatch: add (un)patch callbacks
Provide livepatch modules a klp_object (un)patching notification
mechanism.  Pre and post-(un)patch callbacks allow livepatch modules to
setup or synchronize changes that would be difficult to support in only
patched-or-unpatched code contexts.

Callbacks can be registered for target module or vmlinux klp_objects,
but each implementation is klp_object specific.

  - Pre-(un)patch callbacks run before any (un)patching transition
    starts.

  - Post-(un)patch callbacks run once an object has been (un)patched and
    the klp_patch fully transitioned to its target state.

Example use cases include modification of global data and registration
of newly available services/handlers.

See Documentation/livepatch/callbacks.txt for details and
samples/livepatch/ for examples.

Signed-off-by: Joe Lawrence <joe.lawrence@redhat.com>
Acked-by: Josh Poimboeuf <jpoimboe@redhat.com>
Acked-by: Miroslav Benes <mbenes@suse.cz>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2017-10-19 10:08:56 +02:00
..
livepatch-callbacks-busymod.c livepatch: add (un)patch callbacks 2017-10-19 10:08:56 +02:00
livepatch-callbacks-demo.c livepatch: add (un)patch callbacks 2017-10-19 10:08:56 +02:00
livepatch-callbacks-mod.c livepatch: add (un)patch callbacks 2017-10-19 10:08:56 +02:00
livepatch-sample.c livepatch: allow removal of a disabled patch 2017-03-08 09:38:43 +01:00
livepatch-shadow-fix1.c livepatch: introduce shadow variable API 2017-09-14 23:06:12 +02:00
livepatch-shadow-fix2.c livepatch: introduce shadow variable API 2017-09-14 23:06:12 +02:00
livepatch-shadow-mod.c livepatch: introduce shadow variable API 2017-09-14 23:06:12 +02:00
Makefile livepatch: add (un)patch callbacks 2017-10-19 10:08:56 +02:00