tree: https://github.com/intel/tdx.git kvm head: e34cd76ed9fd5147cdcc26eaff64b0b367004497 commit: d79010bf4f03baa7510e9846e2de4f24de98ed0b [68/85] KVM: VMX: Add 'main.c' to wrap VMX and TDX config: i386-randconfig-a002-20201012 (attached as .config) compiler: gcc-9 (Debian 9.3.0-15) 9.3.0 reproduce (this is a W=1 build): # https://github.com/intel/tdx/commit/d79010bf4f03baa7510e9846e2de4f24de98ed0b git remote add intel-tdx https://github.com/intel/tdx.git git fetch --no-tags intel-tdx kvm git checkout d79010bf4f03baa7510e9846e2de4f24de98ed0b # save the attached .config to linux build tree make W=1 ARCH=i386 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): arch/x86/kvm/vmx/main.c: In function 'vt_set_hv_timer': arch/x86/kvm/vmx/main.c:529:9: error: implicit declaration of function 'vmx_set_hv_timer'; did you mean 'vt_set_hv_timer'? [-Werror=implicit-function-declaration] 529 | return vmx_set_hv_timer(vcpu, guest_deadline_tsc, expired); | ^~~~~~~~~~~~~~~~ | vt_set_hv_timer arch/x86/kvm/vmx/main.c: In function 'vt_cancel_hv_timer': arch/x86/kvm/vmx/main.c:534:2: error: implicit declaration of function 'vmx_cancel_hv_timer'; did you mean 'vt_cancel_hv_timer'? [-Werror=implicit-function-declaration] 534 | vmx_cancel_hv_timer(vcpu); | ^~~~~~~~~~~~~~~~~~~ | vt_cancel_hv_timer At top level: 532 | static void vt_cancel_hv_timer(struct kvm_vcpu *vcpu) | ^~~~~~~~~~~~~~~~~~ 526 | static int vt_set_hv_timer(struct kvm_vcpu *vcpu, u64 guest_deadline_tsc, | ^~~~~~~~~~~~~~~ cc1: all warnings being treated as errors vim +/vt_cancel_hv_timer +532 arch/x86/kvm/vmx/main.c 524 525 527 bool *expired) 528 { 529 return vmx_set_hv_timer(vcpu, guest_deadline_tsc, expired); 530 } 531 533 { 534 vmx_cancel_hv_timer(vcpu); 535 } 536 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org