We need a valid ELF object for dummy.o, so that objcopy can insert the vmlinuz payload. Therefore, we must build the decompresser program without LTO, otherwise dummy.o will be LLVM bytecode instead of a ELF object file. Building the decompresser with LTO wouldn't make much sense anyway, unlike building the vmlinuz itself with LTO. Signed-off-by: Paul Cercueil <paul@xxxxxxxxxxxxxxx> --- arch/mips/boot/compressed/Makefile | 3 +++ 1 file changed, 3 insertions(+) diff --git a/arch/mips/boot/compressed/Makefile b/arch/mips/boot/compressed/Makefile index 4c9ecfbb0ef4..2d01c50fb0b1 100644 --- a/arch/mips/boot/compressed/Makefile +++ b/arch/mips/boot/compressed/Makefile @@ -27,6 +27,9 @@ ifdef CONFIG_CPU_LOONGSON64 KBUILD_CFLAGS := $(filter-out -march=loongson3a, $(KBUILD_CFLAGS)) -march=mips64r2 endif +# Disable LTO +KBUILD_CFLAGS := $(filter-out $(CC_FLAGS_LTO), $(KBUILD_CFLAGS)) + KBUILD_CFLAGS := $(KBUILD_CFLAGS) -mno-abicalls -D__KERNEL__ -D__DISABLE_EXPORTS \ -DBOOT_HEAP_SIZE=$(BOOT_HEAP_SIZE) -D"VMLINUX_LOAD_ADDRESS_ULL=$(VMLINUX_LOAD_ADDRESS)ull" -- 2.33.0
