tree: https://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms.git kvm/protected-memory head: d9455e6eabef4b9be5f33c418a8046e0389edade commit: 842821613f3ec8a3357ddb6b4b45740bccc38aeb [9/16] KVM: Protected memory extension 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 842821613f3ec8a3357ddb6b4b45740bccc38aeb # 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 'protect_memory': 2745 | if (down_write_killable(&mm->mmap_sem)) | ^~~~~~~~ | mmap_base arch/powerpc/kvm/../../../virt/kvm/kvm_main.c:2799:16: error: 'struct mm_struct' has no member named 'mmap_sem'; did you mean 'mmap_base'? 2799 | up_write(&mm->mmap_sem); | ^~~~~~~~ | mmap_base # 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 842821613f3ec8a3357ddb6b4b45740bccc38aeb vim +2745 arch/powerpc/kvm/../../../virt/kvm/kvm_main.c 2738 2739 static int protect_memory(unsigned long start, unsigned long end, bool protect) 2740 { 2741 struct mm_struct *mm = current->mm; 2742 struct vm_area_struct *vma, *prev; 2743 int ret; 2744 2746 return -EINTR; 2747 2748 ret = -ENOMEM; 2749 vma = find_vma(current->mm, start); 2750 if (!vma) 2751 goto out; 2752 2753 ret = -EINVAL; 2754 if (vma->vm_start > start) 2755 goto out; 2756 2757 if (start > vma->vm_start) 2758 prev = vma; 2759 else 2760 prev = vma->vm_prev; 2761 2762 ret = 0; 2763 while (true) { 2764 unsigned long newflags, tmp; 2765 2766 tmp = vma->vm_end; 2767 if (tmp > end) 2768 tmp = end; 2769 2770 newflags = vma->vm_flags; 2771 if (protect) 2772 newflags |= VM_KVM_PROTECTED; 2773 else 2774 newflags &= ~VM_KVM_PROTECTED; 2775 2776 /* The VMA has been handled as part of other memslot */ 2777 if (newflags == vma->vm_flags) 2778 goto next; 2779 2780 ret = mprotect_fixup(vma, &prev, start, tmp, newflags); 2781 if (ret) 2782 goto out; 2783 2784 next: 2785 start = tmp; 2786 if (start < prev->vm_end) 2787 start = prev->vm_end; 2788 2789 if (start >= end) 2790 goto out; 2791 2792 vma = prev->vm_next; 2793 if (!vma || vma->vm_start != start) { 2794 ret = -ENOMEM; 2795 goto out; 2796 } 2797 } 2798 out: 2799 up_write(&mm->mmap_sem); 2800 return ret; 2801 } 2802 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org