Hi Maxim, I love your patch! Yet something to improve: [auto build test ERROR on kvm/linux-next] [also build test ERROR on v5.9-rc2 next-20200825] [cannot apply to vhost/linux-next] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch] url: https://github.com/0day-ci/linux/commits/Maxim-Levitsky/KVM-nSVM-ondemand-nested-state-allocation-nested-guest-state-caching/20200820-171720 base: https://git.kernel.org/pub/scm/virt/kvm/kvm.git linux-next config: x86_64-randconfig-a001-20200826 (attached as .config) compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project 77e5a195f818b9ace91f7b12ab948b21d7918238) reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # install x86_64 cross compiling tool for clang build # apt-get install binutils-x86-64-linux-gnu # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): >> arch/x86/kvm/vmx/vmx.c:2865:5: error: conflicting types for 'vmx_set_efer' int vmx_set_efer(struct kvm_vcpu *vcpu, u64 efer) ^ arch/x86/kvm/vmx/vmx.h:337:6: note: previous declaration is here void vmx_set_efer(struct kvm_vcpu *vcpu, u64 efer); ^ >> arch/x86/kvm/vmx/vmx.c:7913:14: error: incompatible function pointer types initializing 'int (*)(struct kvm_vcpu *, u64)' (aka 'int (*)(struct kvm_vcpu *, unsigned long long)') with an expression of type 'void (struct kvm_vcpu *, u64)' (aka 'void (struct kvm_vcpu *, unsigned long long)') [-Werror,-Wincompatible-function-pointer-types] .set_efer = vmx_set_efer, ^~~~~~~~~~~~ 2 errors generated. # https://github.com/0day-ci/linux/commit/9196b5409d5cb9f0b5536914ecb139ce456ea889 git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Maxim-Levitsky/KVM-nSVM-ondemand-nested-state-allocation-nested-guest-state-caching/20200820-171720 git checkout 9196b5409d5cb9f0b5536914ecb139ce456ea889 vim +/vmx_set_efer +2865 arch/x86/kvm/vmx/vmx.c 2864 > 2865 int vmx_set_efer(struct kvm_vcpu *vcpu, u64 efer) 2866 { 2867 struct vcpu_vmx *vmx = to_vmx(vcpu); 2868 struct shared_msr_entry *msr = find_msr_entry(vmx, MSR_EFER); 2869 2870 if (!msr) 2871 return 1; 2872 2873 vcpu->arch.efer = efer; 2874 if (efer & EFER_LMA) { 2875 vm_entry_controls_setbit(to_vmx(vcpu), VM_ENTRY_IA32E_MODE); 2876 msr->data = efer; 2877 } else { 2878 vm_entry_controls_clearbit(to_vmx(vcpu), VM_ENTRY_IA32E_MODE); 2879 2880 msr->data = efer & ~EFER_LME; 2881 } 2882 setup_msrs(vmx); 2883 return 0; 2884 } 2885 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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