On 4/20/20 9:17 AM, Josh Poimboeuf wrote: > Frame pointers are completely broken by vmenter.S because it clobbers > RBP: > > arch/x86/kvm/svm/vmenter.o: warning: objtool: __svm_vcpu_run()+0xe4: BP used as a scratch register > > That's unavoidable, so just skip checking that file when frame pointers > are configured in. > > On the other hand, ORC can handle that code just fine, so leave objtool > enabled in the !FRAME_POINTER case. > > Reported-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx> > Signed-off-by: Josh Poimboeuf <jpoimboe@xxxxxxxxxx> Acked-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx> # build-tested Thanks. > --- > arch/x86/kvm/Makefile | 4 ++++ > 1 file changed, 4 insertions(+) > > diff --git a/arch/x86/kvm/Makefile b/arch/x86/kvm/Makefile > index a789759b7261..4a3081e9f4b5 100644 > --- a/arch/x86/kvm/Makefile > +++ b/arch/x86/kvm/Makefile > @@ -3,6 +3,10 @@ > ccflags-y += -Iarch/x86/kvm > ccflags-$(CONFIG_KVM_WERROR) += -Werror > > +ifeq ($(CONFIG_FRAME_POINTER),y) > +OBJECT_FILES_NON_STANDARD_vmenter.o := y > +endif > + > KVM := ../../../virt/kvm > > kvm-y += $(KVM)/kvm_main.o $(KVM)/coalesced_mmio.o \ > -- ~Randy
