tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   477f70cd2a67904e04c2c2b9bd0fa2e95222f2f6
commit: fb04a1eddb1a65b6588a021bdc132270d5ae48bb KVM: X86: Implement ring-based dirty memory tracking
date:   10 months ago
config: i386-randconfig-r005-20210901 (attached as .config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 4b1fde8a2b681dad2ce0c082a5d6422caa06b0bc)
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://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=fb04a1eddb1a65b6588a021bdc132270d5ae48bb
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout fb04a1eddb1a65b6588a021bdc132270d5ae48bb
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=i386 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

>> arch/x86/kvm/../../../virt/kvm/dirty_ring.c:94:20: error: unused function 'kvm_dirty_gfn_invalid' [-Werror,-Wunused-function]
   static inline bool kvm_dirty_gfn_invalid(struct kvm_dirty_gfn *gfn)
                      ^
   1 error generated.


vim +/kvm_dirty_gfn_invalid +94 arch/x86/kvm/../../../virt/kvm/dirty_ring.c

    93	
  > 94	static inline bool kvm_dirty_gfn_invalid(struct kvm_dirty_gfn *gfn)
    95	{
    96		return gfn->flags == 0;
    97	}
    98	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org