Certain compilers (I haven't quite tracked it down to if it's a certain version or distro specific things) strip out some metadata that is required for PVH bootable kernels to boot properly. They require a couple extra CFLAGS to tell them to not. I'm not sure this is the best way to fix this (in fact, I'm sure it's not). I messed around with `call cc-option` a bit and couldn't get it to work. refs: https://github.com/cloud-hypervisor/cloud-hypervisor/issues/3222 Signed-off-by: Iggy Jackson <iggy@xxxxxxxxxxx> --- Makefile | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/Makefile b/Makefile index 1fc349109..f681d0b41 100644 --- a/Makefile +++ b/Makefile @@ -978,6 +978,10 @@ ifdef CONFIG_CC_IS_GCC KBUILD_CFLAGS += $(call cc-ifversion, -ge, 0901, -Wno-alloc-size-larger-than) endif +ifdef CONFIG_PVH +KBUILD_CFLAGS += -Wa,-mx86-used-note=no +endif + # disable invalid "can't wrap" optimizations for signed / pointers KBUILD_CFLAGS += -fno-strict-overflow -- 2.34.1
