treewide: Add SPDX license identifier - Makefile/Kconfig

Add SPDX license identifiers to all Make/Kconfig files which:

- Have no license information of any form

These files fall under the project

treewide: Add SPDX license identifier - Makefile/Kconfig

Add SPDX license identifiers to all Make/Kconfig files which:

- Have no license information of any form

These files fall under the project license, GPL v2 only. The resulting SPDX
license identifier is:

GPL-2.0-only

Signed-off-by: Thomas Gleixner <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>

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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 chang

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 <[email protected]>
Acked-by: Josh Poimboeuf <[email protected]>
Acked-by: Miroslav Benes <[email protected]>
Signed-off-by: Jiri Kosina <[email protected]>

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livepatch: introduce shadow variable API

Add exported API for livepatch modules:

klp_shadow_get()
klp_shadow_alloc()
klp_shadow_get_or_alloc()
klp_shadow_free()
klp_shadow_free_all()

tha

livepatch: introduce shadow variable API

Add exported API for livepatch modules:

klp_shadow_get()
klp_shadow_alloc()
klp_shadow_get_or_alloc()
klp_shadow_free()
klp_shadow_free_all()

that implement "shadow" variables, which allow callers to associate new
shadow fields to existing data structures. This is intended to be used
by livepatch modules seeking to emulate additions to data structure
definitions.

See Documentation/livepatch/shadow-vars.txt for a summary of the new
shadow variable API, including a few common use cases.

See samples/livepatch/livepatch-shadow-* for example modules that
demonstrate shadow variables.

[[email protected]: fix __klp_shadow_get_or_alloc() comment as spotted by
Josh]
Signed-off-by: Joe Lawrence <[email protected]>
Acked-by: Josh Poimboeuf <[email protected]>
Acked-by: Miroslav Benes <[email protected]>
Signed-off-by: Jiri Kosina <[email protected]>

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livepatch: rename config to CONFIG_LIVEPATCH

Rename CONFIG_LIVE_PATCHING to CONFIG_LIVEPATCH to make the naming of
the config and the code more consistent.

Signed-off-by: Josh Poimboeuf <jpoimboe@r

livepatch: rename config to CONFIG_LIVEPATCH

Rename CONFIG_LIVE_PATCHING to CONFIG_LIVEPATCH to make the naming of
the config and the code more consistent.

Signed-off-by: Josh Poimboeuf <[email protected]>
Reviewed-by: Jingoo Han <[email protected]>
Signed-off-by: Jiri Kosina <[email protected]>

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livepatch: samples: add sample live patching module

Add a sample live patching module.

Signed-off-by: Seth Jennings <[email protected]>
Reviewed-by: Miroslav Benes <[email protected]>
Reviewed-by: P

livepatch: samples: add sample live patching module

Add a sample live patching module.

Signed-off-by: Seth Jennings <[email protected]>
Reviewed-by: Miroslav Benes <[email protected]>
Reviewed-by: Petr Mladek <[email protected]>
Reviewed-by: Masami Hiramatsu <[email protected]>
Signed-off-by: Jiri Kosina <[email protected]>

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