[sean-jc:x86/virt_enable_less_sucky 4/5] arch/powerpc/kvm/../../../virt/kvm/kvm_main.c:6443:10: error: use of undeclared identifier 'kvm_usage_count'; did you mean 'set_page_count'?

[kernel test robot <lkp@intel.com>]

tree:   https://github.com/sean-jc/linux x86/virt_enable_less_sucky
head:   371a6c885b7bffb276ebf0a7e660d2702b1555e7
commit: b9f6ab5e571d77c7cc35dd6f4642677fdc6e8bc3 [4/5] KVM: Add a module param to allow enabled virtualization when KVM is loaded
config: powerpc64-randconfig-003-20240518 (https://download.01.org/0day-ci/archive/20240519/202405190405.ceRSiCwy-lkp@intel.com/config)
compiler: clang version 15.0.7 (https://github.com/llvm/llvm-project 8dfdcc7b7bf66834a761bd8de445840ef68e4d1a)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240519/202405190405.ceRSiCwy-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202405190405.ceRSiCwy-lkp@intel.com/

All errors (new ones prefixed by >>):

>> arch/powerpc/kvm/../../../virt/kvm/kvm_main.c:6443:10: error: use of undeclared identifier 'kvm_usage_count'; did you mean 'set_page_count'?
                   BUG_ON(kvm_usage_count);
                          ^~~~~~~~~~~~~~~
                          set_page_count
   include/asm-generic/bug.h:166:45: note: expanded from macro 'BUG_ON'
   #define BUG_ON(condition) do { if (unlikely(condition)) BUG(); } while (0)
                                               ^
   include/linux/compiler.h:77:42: note: expanded from macro 'unlikely'
   # define unlikely(x)    __builtin_expect(!!(x), 0)
                                               ^
   include/linux/page_ref.h:97:20: note: 'set_page_count' declared here
   static inline void set_page_count(struct page *page, int v)
                      ^
   1 error generated.


vim +6443 arch/powerpc/kvm/../../../virt/kvm/kvm_main.c

  6429	
  6430	void kvm_exit(void)
  6431	{
  6432		int cpu;
  6433	
  6434		/*
  6435		 * Note, unregistering /dev/kvm doesn't strictly need to come first,
  6436		 * fops_get(), a.k.a. try_module_get(), prevents acquiring references
  6437		 * to KVM while the module is being stopped.
  6438		 */
  6439		misc_deregister(&kvm_dev);
  6440	
  6441		if (enable_virt_at_load) {
  6442			kvm_disable_virtualization();
> 6443			BUG_ON(kvm_usage_count);
  6444		}
  6445	
  6446		debugfs_remove_recursive(kvm_debugfs_dir);
  6447		for_each_possible_cpu(cpu)
  6448			free_cpumask_var(per_cpu(cpu_kick_mask, cpu));
  6449		kmem_cache_destroy(kvm_vcpu_cache);
  6450		kvm_vfio_ops_exit();
  6451		kvm_async_pf_deinit();
  6452		kvm_irqfd_exit();
  6453	}
  6454	EXPORT_SYMBOL_GPL(kvm_exit);
  6455	

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