Hi Ashish, kernel test robot noticed the following build warnings: [auto build test WARNING on efi/next] [also build test WARNING on linus/master v6.9-rc2 next-20240405] [cannot apply to tip/x86/core tip/master tip/x86/mm tip/auto-latest] [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/efi-x86-skip-efi_arch_mem_reserve-in-case-of-kexec/20240405-071346 base: https://git.kernel.org/pub/scm/linux/kernel/git/efi/efi.git next patch link: https://lore.kernel.org/r/41db1ebbe58fb082dbe848f1c666ed23e83f1752.1712270976.git.ashish.kalra%40amd.com patch subject: [PATCH v3 4/4] x86/snp: Convert shared memory back to private on kexec config: x86_64-rhel-8.3-rust (https://download.01.org/0day-ci/archive/20240405/202404051917.mk4DoDkI-lkp@xxxxxxxxx/config) compiler: clang version 17.0.6 (https://github.com/llvm/llvm-project 6009708b4367171ccdbf4b5905cb6a803753fe18) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240405/202404051917.mk4DoDkI-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/202404051917.mk4DoDkI-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): arch/x86/kernel/sev.c:1006:14: error: call to undeclared function 'pte_decrypted'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] 1006 | if (pte && pte_decrypted(*pte) && !pte_none(*pte)) { | ^ arch/x86/kernel/sev.c:1035:16: error: call to undeclared function 'pte_decrypted'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] 1035 | if (!pte || !pte_decrypted(*pte) || pte_none(*pte)) | ^ >> arch/x86/kernel/sev.c:1025:16: warning: variable 'size' set but not used [-Wunused-but-set-variable] 1025 | unsigned long size; | ^ arch/x86/kernel/sev.c:1056:7: error: call to undeclared function 'stop_memory_enc_conversion'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] 1056 | if (!stop_memory_enc_conversion(wait_for_lock)) | ^ 1 warning and 3 errors generated. vim +/size +1025 arch/x86/kernel/sev.c 1021 1022 static void unshare_all_bss_decrypted_memory(void) 1023 { 1024 unsigned long vaddr, vaddr_end; > 1025 unsigned long size; 1026 unsigned int level; 1027 unsigned int npages; 1028 pte_t *pte; 1029 1030 vaddr = (unsigned long)__start_bss_decrypted; 1031 vaddr_end = (unsigned long)__start_bss_decrypted_unused; 1032 npages = (vaddr_end - vaddr) >> PAGE_SHIFT; 1033 for (; vaddr < vaddr_end; vaddr += PAGE_SIZE) { 1034 pte = lookup_address(vaddr, &level); 1035 if (!pte || !pte_decrypted(*pte) || pte_none(*pte)) 1036 continue; 1037 1038 size = page_level_size(level); 1039 set_pte_enc(pte, level, (void *)vaddr); 1040 } 1041 vaddr = (unsigned long)__start_bss_decrypted; 1042 snp_set_memory_private(vaddr, npages); 1043 } 1044 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki _______________________________________________ kexec mailing list kexec@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/kexec
