Hi Ashish, kernel test robot noticed the following build warnings: [auto build test WARNING on kvm/queue] [also build test WARNING on linus/master v6.11-rc5 next-20240830] [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#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Ashish-Kalra/x86-sev-Fix-host-kdump-support-for-SNP/20240828-044035 base: https://git.kernel.org/pub/scm/virt/kvm/kvm.git queue patch link: https://lore.kernel.org/r/20240827203804.4989-1-Ashish.Kalra%40amd.com patch subject: [PATCH] x86/sev: Fix host kdump support for SNP config: i386-buildonly-randconfig-006-20240831 (https://download.01.org/0day-ci/archive/20240831/202408311530.cYa27OX8-lkp@xxxxxxxxx/config) compiler: clang version 18.1.5 (https://github.com/llvm/llvm-project 617a15a9eac96088ae5e9134248d8236e34b91b1) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240831/202408311530.cYa27OX8-lkp@xxxxxxxxx/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202408311530.cYa27OX8-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): In file included from arch/x86/kvm/svm/svm.c:50: >> arch/x86/kvm/svm/svm.h:783:13: warning: function 'snp_decommision_all' has internal linkage but is not defined [-Wundefined-internal] 783 | static void snp_decommision_all(void); | ^ arch/x86/kvm/svm/svm.c:686:3: note: used here 686 | snp_decommision_all(); | ^ 1 warning generated. vim +/snp_decommision_all +783 arch/x86/kvm/svm/svm.h 763 764 static inline void sev_free_vcpu(struct kvm_vcpu *vcpu) {} 765 static inline void sev_vm_destroy(struct kvm *kvm) {} 766 static inline void __init sev_set_cpu_caps(void) {} 767 static inline void __init sev_hardware_setup(void) {} 768 static inline void sev_hardware_unsetup(void) {} 769 static inline int sev_cpu_init(struct svm_cpu_data *sd) { return 0; } 770 static inline int sev_dev_get_attr(u32 group, u64 attr, u64 *val) { return -ENXIO; } 771 #define max_sev_asid 0 772 static inline void sev_handle_rmp_fault(struct kvm_vcpu *vcpu, gpa_t gpa, u64 error_code) {} 773 static inline void sev_snp_init_protected_guest_state(struct kvm_vcpu *vcpu) {} 774 static inline int sev_gmem_prepare(struct kvm *kvm, kvm_pfn_t pfn, gfn_t gfn, int max_order) 775 { 776 return 0; 777 } 778 static inline void sev_gmem_invalidate(kvm_pfn_t start, kvm_pfn_t end) {} 779 static inline int sev_private_max_mapping_level(struct kvm *kvm, kvm_pfn_t pfn) 780 { 781 return 0; 782 } > 783 static void snp_decommision_all(void); 784 #endif 785 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
