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| author |   Miroslav Benes <mbenes@suse.cz> | 2017-05-26 14:45:21 +0200 |
|---|---|---|
| committer |   Jiri Kosina <jkosina@suse.cz> | 2017-05-27 00:27:37 +0200 |
| commit | 5720acf4bfc142ba568d5b6782fceaf62ed15e0b (patch) | |
| tree | 1710c0e1717f88eb51d7c6536e357de89f6b076c | |
| parent | Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/livepatching (diff) | |
| download | linux-dev-5720acf4bfc142ba568d5b6782fceaf62ed15e0b.tar.xz linux-dev-5720acf4bfc142ba568d5b6782fceaf62ed15e0b.zip | |
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: Michal Marek <mmarek@suse.com>
Acked-by: Josh Poimboeuf <jpoimboe@redhat.com>
Acked-by: Jessica Yu <jeyu@redhat.com>
Signed-off-by: Miroslav Benes <mbenes@suse.cz>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
| -rw-r--r-- | kernel/livepatch/Kconfig | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/kernel/livepatch/Kconfig b/kernel/livepatch/Kconfig index 045022557936..ec4565122e65 100644 --- a/kernel/livepatch/Kconfig +++ b/kernel/livepatch/Kconfig @@ -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" |