Allow LTO to be used for cpu.c when CONFIG_CFI_CLANG is enabled to avoid indirect call failures. CFI requires Clang >= 12, which doesn't have the stack protector inlining bug.
Signed-off-by: Sami Tolvanen <samitolva...@google.com> --- arch/x86/power/Makefile | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/x86/power/Makefile b/arch/x86/power/Makefile index 379777572bc9..a0532851fed7 100644 --- a/arch/x86/power/Makefile +++ b/arch/x86/power/Makefile @@ -4,9 +4,11 @@ # itself be stack-protected CFLAGS_cpu.o := -fno-stack-protector +ifndef CONFIG_CFI_CLANG # Clang may incorrectly inline functions with stack protector enabled into # __restore_processor_state(): https://bugs.llvm.org/show_bug.cgi?id=47479 CFLAGS_REMOVE_cpu.o := $(CC_FLAGS_LTO) +endif obj-$(CONFIG_PM_SLEEP) += cpu.o obj-$(CONFIG_HIBERNATION) += hibernate_$(BITS).o hibernate_asm_$(BITS).o hibernate.o -- 2.31.1.368.gbe11c130af-goog
