Hi "Maciej, Thank you for the patch! Yet something to improve: [auto build test ERROR on kvm/queue] [also build test ERROR on kvms390/next v5.14-rc5 next-20210813] [cannot apply to kvm-ppc/kvm-ppc-next] [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] url: https://github.com/0day-ci/linux/commits/Maciej-S-Szmigiero/KVM-Scalable-... base: https://git.kernel.org/pub/scm/virt/kvm/kvm.git queue config: i386-randconfig-s001-20210813 (attached as .config) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce: # apt-get install sparse # sparse version: v0.6.3-348-gf0e6938b-dirty # https://github.com/0day-ci/linux/commit/172883fe88fb9dc0533b916b2f4177008... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Maciej-S-Szmigiero/KVM-Scalable-memslots-implementation/20210814-040318 git checkout 172883fe88fb9dc0533b916b2f4177008d35e05a # save the attached .config to linux build tree make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=i386 SHELL=/bin/bash 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 >>): ld: arch/x86/kvm/x86.o: in function `kvm_arch_commit_memory_region': vim +11602 arch/x86/kvm/x86.c 11584 11585 void kvm_arch_commit_memory_region(struct kvm *kvm, 11586 const struct kvm_userspace_memory_region *mem, 11587 struct kvm_memory_slot *old, 11588 const struct kvm_memory_slot *new, 11589 enum kvm_mr_change change) 11590 { 11591 if (change == KVM_MR_CREATE) 11592 kvm->arch.n_memslots_pages += new->npages; 11593 else if (change == KVM_MR_DELETE) { 11594 WARN_ON(kvm->arch.n_memslots_pages < old->npages); 11595 kvm->arch.n_memslots_pages -= old->npages; 11596 } 11597 11598 if (!kvm->arch.n_requested_mmu_pages) { 11599 unsigned long nr_mmu_pages; 11600 11601 nr_mmu_pages = kvm->arch.n_memslots_pages * 11602 KVM_PERMILLE_MMU_PAGES / 1000; 11603 nr_mmu_pages = max(nr_mmu_pages, KVM_MIN_ALLOC_MMU_PAGES); 11604 kvm_mmu_change_mmu_pages(kvm, nr_mmu_pages); 11605 } 11606 11607 kvm_mmu_slot_apply_flags(kvm, old, new, change); 11608 11609 /* Free the arrays associated with the old memslot. */ 11610 if (change == KVM_MR_MOVE) 11611 kvm_arch_free_memslot(kvm, old); 11612 } 11613 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org