tree: https://github.com/intel/tdx.git kvm-upstream-workaround head: 9ba9d8e36b0fa25f5f20109a0ae61619a421f550 commit: 6d8632a26d7060510bfe4fbb3011c2d6e2d2f079 [155/162] KVM, x86/tdp_mmu: optimize remote tlb flush config: x86_64-randconfig-a015-20220124 (https://download.01.org/0day-ci/archive/20220125/202201251603.34lAUK9o-lk...) compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 997e128e2a78f5a5434fc75997441ae1ee76f8a4) 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 # https://github.com/intel/tdx/commit/6d8632a26d7060510bfe4fbb3011c2d6e2d2f079 git remote add intel-tdx https://github.com/intel/tdx.git git fetch --no-tags intel-tdx kvm-upstream-workaround git checkout 6d8632a26d7060510bfe4fbb3011c2d6e2d2f079 # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash arch/x86/kvm/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): is_large_pte(iter->old_spte) ? PT_PAGE_SIZE_MASK : 0; ~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ^ arch/x86/kvm/mmu/tdp_mmu.c:774:32: note: place parentheses around the '|' expression to silence this warning is_large_pte(iter->old_spte) ? PT_PAGE_SIZE_MASK : 0; ^ ) arch/x86/kvm/mmu/tdp_mmu.c:774:32: note: place parentheses around the '?:' expression to evaluate it first is_large_pte(iter->old_spte) ? PT_PAGE_SIZE_MASK : 0; ^ ( ) 1 warning generated. vim +774 arch/x86/kvm/mmu/tdp_mmu.c 745 746 #define tdp_root_for_each_pte(_iter, _root, _start, _end) \ 747 for_each_tdp_pte(_iter, _root->spt, _root->role.level, _start, _end) 748 749 /* 750 * Note temporarily blocked private SPTE is consider as valid leaf, 751 * although !is_shadow_present_pte() returns true for it, since the 752 * target page (which the mapping maps to ) is still there. 753 */ 754 #define tdp_root_for_each_leaf_pte(_iter, _root, _start, _end) \ 755 tdp_root_for_each_pte(_iter, _root, _start, _end) \ 756 if ((!is_shadow_present_pte(_iter.old_spte) && \ 757 !is_zapped_private_pte(_iter.old_spte)) || \ 758 !is_last_spte(_iter.old_spte, _iter.level)) \ 759 continue; \ 760 else 761 762 #define tdp_mmu_for_each_pte(_iter, _mmu, _private, _start, _end) \ 763 for_each_tdp_pte(_iter, \ 764 __va((_private) ? _mmu->private_root_hpa : _mmu->root_hpa), \ 765 _mmu->shadow_root_level, _start, _end) 766 767 static u64 zapped_private_spte(struct kvm *kvm, const struct tdp_iter *iter) 768 { 769 if (!kvm_gfn_stolen_mask(kvm)) 770 return shadow_init_value; 771 772 return shadow_init_value | SPTE_PRIVATE_ZAPPED | 773 (spte_to_pfn(iter->old_spte) << PAGE_SHIFT) | 775 } 776 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org