Commit 5720acf4 authored by Miroslav Benes's avatar Miroslav Benes Committed by Jiri Kosina

livepatch: Make livepatch dependent on !TRIM_UNUSED_KSYMS

If TRIM_UNUSED_KSYMS is enabled, all unneeded exported symbols are made
unexported. Two-pass build of the kernel is done to find out which
symbols are needed based on a configuration. This effectively
complicates things for out-of-tree modules.

Livepatch exports functions to (un)register and enable/disable a live
patch. The only in-tree module which uses these functions is a sample in
samples/livepatch/. If the sample is disabled, the functions are
trimmed and out-of-tree live patches cannot be built.

Note that live patches are intended to be built out-of-tree.
Suggested-by: default avatarMichal Marek <mmarek@suse.com>
Acked-by: default avatarJosh Poimboeuf <jpoimboe@redhat.com>
Acked-by: default avatarJessica Yu <jeyu@redhat.com>
Signed-off-by: default avatarMiroslav Benes <mbenes@suse.cz>
Signed-off-by: default avatarJiri Kosina <jkosina@suse.cz>
parent 76f1948a
......@@ -10,6 +10,7 @@ config LIVEPATCH
depends on SYSFS
depends on KALLSYMS_ALL
depends on HAVE_LIVEPATCH
depends on !TRIM_UNUSED_KSYMS
help
Say Y here if you want to support kernel live patching.
This option has no runtime impact until a kernel "patch"
......
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