From: Andi Kleen <andi@xxxxxxxxxxxxxx> It is not supported by gcc 12 so far, so it causes compiler "sorry" messages. Other than the compiler support, there shouldn't be any barriers for live patching LTOed kernels, although it might be more difficult to create patches for larger functions. Cc: Josh Poimboeuf <jpoimboe@xxxxxxxxxx> Cc: Jiri Kosina <jikos@xxxxxxxxxx> Cc: Miroslav Benes <mbenes@xxxxxxx> Cc: Petr Mladek <pmladek@xxxxxxxx> Cc: Joe Lawrence <joe.lawrence@xxxxxxxxxx> Cc: live-patching@xxxxxxxxxxxxxxx Signed-off-by: Andi Kleen <ak@xxxxxxxxxxxxxxx> Signed-off-by: Martin Liska <mliska@xxxxxxx> Signed-off-by: Jiri Slaby <jslaby@xxxxxxx> --- kernel/livepatch/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/kernel/livepatch/Kconfig b/kernel/livepatch/Kconfig index 53d51ed619a3..22699adc39a6 100644 --- a/kernel/livepatch/Kconfig +++ b/kernel/livepatch/Kconfig @@ -12,6 +12,7 @@ config LIVEPATCH depends on KALLSYMS_ALL depends on HAVE_LIVEPATCH depends on !TRIM_UNUSED_KSYMS + depends on !LTO_GCC # not supported in gcc help Say Y here if you want to support kernel live patching. This option has no runtime impact until a kernel "patch" -- 2.38.1
