Hi Jim, [auto build test ERROR on kvm/linux-next] [also build test ERROR on v4.12-rc2 next-20170524] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] url: https://github.com/0day-ci/linux/commits/Jim-Mattson/kvm-vmx-Do-not-disable-intercepts-for-BNDCFGS/20170524-122859 base: https://git.kernel.org/pub/scm/virt/kvm/kvm.git linux-next config: x86_64-lkp (attached as .config) compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901 reproduce: # save the attached .config to linux build tree make ARCH=x86_64 All errors (new ones prefixed by >>): arch/x86/kvm/vmx.c: In function 'vmx_get_msr': >> arch/x86/kvm/vmx.c:3198:8: error: implicit declaration of function 'guest_cpuid_has_mpx' [-Werror=implicit-function-declaration] if (!guest_cpuid_has_mpx(vcpu)) ^~~~~~~~~~~~~~~~~~~ cc1: some warnings being treated as errors vim +/guest_cpuid_has_mpx +3198 arch/x86/kvm/vmx.c 3192 msr_info->data = vmcs_readl(GUEST_SYSENTER_EIP); 3193 break; 3194 case MSR_IA32_SYSENTER_ESP: 3195 msr_info->data = vmcs_readl(GUEST_SYSENTER_ESP); 3196 break; 3197 case MSR_IA32_BNDCFGS: > 3198 if (!guest_cpuid_has_mpx(vcpu)) 3199 return 1; 3200 msr_info->data = vmcs_read64(GUEST_BNDCFGS); 3201 break; --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation