tree: https://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms.git kvm/protected-memory head: d9455e6eabef4b9be5f33c418a8046e0389edade commit: 7e178d6590c1e43e5df2d65490a273d030798d3b [15/16] KVM: Handle protected memory in __kvm_map_gfn()/__kvm_unmap_gfn() config: powerpc-powernv_defconfig (attached as .config) compiler: powerpc64le-linux-gcc (GCC) 9.3.0 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 git checkout 7e178d6590c1e43e5df2d65490a273d030798d3b # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=powerpc If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): arch/powerpc/kvm/../../../virt/kvm/kvm_main.c: In function 'hva_to_pfn_slow': arch/powerpc/kvm/../../../virt/kvm/kvm_main.c:1864:26: error: 'struct mm_struct' has no member named 'mmap_sem'; did you mean 'mmap_base'? 1864 | down_read(&current->mm->mmap_sem); | ^~~~~~~~ | mmap_base arch/powerpc/kvm/../../../virt/kvm/kvm_main.c:1867:25: error: 'struct mm_struct' has no member named 'mmap_sem'; did you mean 'mmap_base'? 1867 | up_read(&current->mm->mmap_sem); | ^~~~~~~~ | mmap_base arch/powerpc/kvm/../../../virt/kvm/kvm_main.c:1872:24: error: 'struct mm_struct' has no member named 'mmap_sem'; did you mean 'mmap_base'? 1872 | up_read(&current->mm->mmap_sem); | ^~~~~~~~ | mmap_base arch/powerpc/kvm/../../../virt/kvm/kvm_main.c: In function '__kvm_map_gfn': arch/powerpc/kvm/../../../virt/kvm/kvm_main.c:2184:9: error: implicit declaration of function 'ioremap_cache_force'; did you mean 'ioremap_cache'? [-Werror=implicit-function-declaration] 2184 | hva = ioremap_cache_force(pfn_to_hpa(pfn), PAGE_SIZE); | ^~~~~~~~~~~~~~~~~~~ | ioremap_cache 2184 | hva = ioremap_cache_force(pfn_to_hpa(pfn), PAGE_SIZE); | ^ arch/powerpc/kvm/../../../virt/kvm/kvm_main.c: In function 'map_page_atomic': arch/powerpc/kvm/../../../virt/kvm/kvm_main.c:2360:2: error: implicit declaration of function 'set_pte'; did you mean 'set_tb'? [-Werror=implicit-function-declaration] 2360 | set_pte(pte, mk_pte(page, PAGE_KERNEL)); | ^~~~~~~ | set_tb arch/powerpc/kvm/../../../virt/kvm/kvm_main.c: In function 'unmap_page_atomic': arch/powerpc/kvm/../../../virt/kvm/kvm_main.c:2368:2: error: implicit declaration of function '__flush_tlb_one_kernel'; did you mean '__flush_tlb_pending'? [-Werror=implicit-function-declaration] 2368 | __flush_tlb_one_kernel((unsigned long)vaddr); | ^~~~~~~~~~~~~~~~~~~~~~ | __flush_tlb_pending arch/powerpc/kvm/../../../virt/kvm/kvm_main.c: In function 'protect_memory': arch/powerpc/kvm/../../../virt/kvm/kvm_main.c:2801:31: error: 'struct mm_struct' has no member named 'mmap_sem'; did you mean 'mmap_base'? 2801 | if (down_write_killable(&mm->mmap_sem)) | ^~~~~~~~ | mmap_base arch/powerpc/kvm/../../../virt/kvm/kvm_main.c:2855:16: error: 'struct mm_struct' has no member named 'mmap_sem'; did you mean 'mmap_base'? 2855 | up_write(&mm->mmap_sem); | ^~~~~~~~ | mmap_base cc1: all warnings being treated as errors # https://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms.git/com... git remote add arm-platforms https://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms.git git fetch --no-tags arm-platforms kvm/protected-memory git checkout 7e178d6590c1e43e5df2d65490a273d030798d3b vim +2184 arch/powerpc/kvm/../../../virt/kvm/kvm_main.c 2149 2150 static int __kvm_map_gfn(struct kvm_memslots *slots, gfn_t gfn, 2151 struct kvm_host_map *map, 2152 struct gfn_to_pfn_cache *cache, 2153 bool atomic) 2154 { 2155 kvm_pfn_t pfn; 2156 void *hva = NULL; 2157 struct page *page = KVM_UNMAPPED_PAGE; 2158 struct kvm_memory_slot *slot = __gfn_to_memslot(slots, gfn); 2159 bool protected = false; 2160 u64 gen = slots->generation; 2161 2162 if (!map) 2163 return -EINVAL; 2164 2165 if (cache) { 2166 if (!cache->pfn || cache->gfn != gfn || 2167 cache->generation != gen) { 2168 if (atomic) 2169 return -EAGAIN; 2170 kvm_cache_gfn_to_pfn(slot, gfn, cache, gen); 2171 } 2172 pfn = cache->pfn; 2173 } else { 2174 if (atomic) 2175 return -EAGAIN; 2176 pfn = gfn_to_pfn_memslot_protected(slot, gfn, &protected); 2177 } 2178 if (is_error_noslot_pfn(pfn)) 2179 return -EINVAL; 2180 2181 if (protected) { 2182 if (atomic) 2183 return -EAGAIN; 2185 } else if (pfn_valid(pfn)) { 2186 page = pfn_to_page(pfn); 2187 if (atomic) 2188 hva = kmap_atomic(page); 2189 else 2190 hva = kmap(page); 2191 #ifdef CONFIG_HAS_IOMEM 2192 } else if (!atomic) { 2193 hva = memremap(pfn_to_hpa(pfn), PAGE_SIZE, MEMREMAP_WB); 2194 } else { 2195 return -EINVAL; 2196 #endif 2197 } 2198 2199 if (!hva) 2200 return -EFAULT; 2201 2202 map->page = page; 2203 map->hva = hva; 2204 map->pfn = pfn; 2205 map->gfn = gfn; 2206 map->protected = protected; 2207 2208 return 0; 2209 } 2210 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org