mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-16 17:36:57 +07:00
5720acf4bf
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>
20 lines
586 B
Plaintext
20 lines
586 B
Plaintext
config HAVE_LIVEPATCH
|
|
bool
|
|
help
|
|
Arch supports kernel live patching
|
|
|
|
config LIVEPATCH
|
|
bool "Kernel Live Patching"
|
|
depends on DYNAMIC_FTRACE_WITH_REGS
|
|
depends on MODULES
|
|
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"
|
|
module uses the interface provided by this option to register
|
|
a patch, causing calls to patched functions to be redirected
|
|
to new function code contained in the patch module.
|