tree: https://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms.git kvm/protected-memory head: d9455e6eabef4b9be5f33c418a8046e0389edade commit: cd614158250379351100ee6358b4d29d5456ec83 [11/16] KVM: Rework copy_to/from_guest() to avoid direct mapping config: powerpc-allyesconfig (attached as .config) compiler: powerpc64-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 cd614158250379351100ee6358b4d29d5456ec83 # 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 'map_page_atomic': 2337 | set_pte(pte, mk_pte(page, PAGE_KERNEL)); | ^~~~~~~ | set_tb arch/powerpc/kvm/../../../virt/kvm/kvm_main.c: In function 'unmap_page_atomic': 2345 | __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:2778:31: error: 'struct mm_struct' has no member named 'mmap_sem'; did you mean 'mmap_base'? 2778 | if (down_write_killable(&mm->mmap_sem)) | ^~~~~~~~ | mmap_base arch/powerpc/kvm/../../../virt/kvm/kvm_main.c:2832:16: error: 'struct mm_struct' has no member named 'mmap_sem'; did you mean 'mmap_base'? 2832 | up_write(&mm->mmap_sem); | ^~~~~~~~ | mmap_base cc1: some 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 cd614158250379351100ee6358b4d29d5456ec83 vim +2337 arch/powerpc/kvm/../../../virt/kvm/kvm_main.c 2328 2329 static void *map_page_atomic(struct page *page) 2330 { 2331 pte_t *pte; 2332 void *vaddr; 2333 2334 preempt_disable(); 2335 pte = guest_map_ptes[smp_processor_id()]; 2336 vaddr = guest_map_area->addr + smp_processor_id() * PAGE_SIZE; 2338 return vaddr; 2339 } 2340 2341 static void unmap_page_atomic(void *vaddr) 2342 { 2343 pte_t *pte = guest_map_ptes[smp_processor_id()]; 2344 set_pte(pte, __pte(0)); 2346 preempt_enable(); 2347 } 2348 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org