KVM: x86: Stop compiling vmenter.S with OBJECT_FILES_NON_STANDARD

Stop compiling vmenter.S with OBJECT_FILES_NON_STANDARD to skip objtool's
stack validation now that __svm_vcpu_run() and __svm_sev_es_vcpu_run()
create stack frames (though the former's effectiveness is dubious).

Note, due to a quirk in how OBJECT_FILES_NON_STANDARD was handled by the
build system prior to commit bf48d9b756b9 ("kbuild: change tool coverage
variables to take the path relative to $(obj)"), vmx/vmenter.S got lumped
in with svm/vmenter.S.  __vmx_vcpu_run() already plays nice with frame
pointers, i.e. it was collateral damage when commit 7f4b5cde2409 ("kvm:
Disable objtool frame pointer checking for vmenter.S") added the
OBJECT_FILES_NON_STANDARD hack-a-fix.

Link: https://lore.kernel.org/all/[email protected]
Reviewed-by: Tom Lendacky <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Sean Christopherson <[email protected]>

diff --git a/arch/x86/kvm/Makefile b/arch/x86/kvm/Makefile
index a88bb14266b69fe9805cb864cbe4c02e928e460b..addc44fc7187d63b5ed8c9acc7790efd61d4cf5c 100644 (file)
--- a/arch/x86/kvm/Makefile
+++ b/arch/x86/kvm/Makefile
@@ -3,11 +3,6 @@
 ccflags-y += -I $(srctree)/arch/x86/kvm
 ccflags-$(CONFIG_KVM_WERROR) += -Werror
 
-ifeq ($(CONFIG_FRAME_POINTER),y)
-OBJECT_FILES_NON_STANDARD_vmx/vmenter.o := y
-OBJECT_FILES_NON_STANDARD_svm/vmenter.o := y
-endif
-
 include $(srctree)/virt/kvm/Makefile.kvm
 
 kvm-y                  += x86.o emulate.o i8259.o irq.o lapic.o \