[android-common:android15-6.6 9/10] arch/arm64/kvm/ptdump.c:263:9: warning: variable 'mc_pages' set but not used

[android-common:android15-6.6 9/10] arch/arm64/kvm/ptdump.c:263:9: warning: variable 'mc_pages' set but not used

[kernel test robot]

tree:   https://android.googlesource.com/kernel/common android15-6.6
head:   fd56b2aa92fcbe06183a073463747799129267e9
commit: d83ecb7039ab24325e4c10c8dd01556cd8e20f5f [9/10] ANDROID: KVM: arm64: Add ptdump support for host stage-2
config: arm64-allmodconfig (https://download.01.org/0day-ci/archive/20240328/202403280507.6LkHiQRN-lkp@intel.com/config)
compiler: clang version 19.0.0git (https://github.com/llvm/llvm-project 23de3862dce582ce91c1aa914467d982cb1a73b4)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240328/202403280507.6LkHiQRN-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/202403280507.6LkHiQRN-lkp@intel.com/

All warnings (new ones prefixed by >>):

   In file included from arch/arm64/kvm/ptdump.c:10:
   In file included from include/linux/kvm_host.h:16:
   In file included from include/linux/mm.h:2180:
   include/linux/vmstat.h:508:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
     508 |         return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
         |                            ~~~~~~~~~~~~~~~~~~~~~ ^
     509 |                            item];
         |                            ~~~~
   include/linux/vmstat.h:515:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
     515 |         return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
         |                            ~~~~~~~~~~~~~~~~~~~~~ ^
     516 |                            NR_VM_NUMA_EVENT_ITEMS +
         |                            ~~~~~~~~~~~~~~~~~~~~~~
   include/linux/vmstat.h:522:36: warning: arithmetic between different enumeration types ('enum node_stat_item' and 'enum lru_list') [-Wenum-enum-conversion]
     522 |         return node_stat_name(NR_LRU_BASE + lru) + 3; // skip "nr_"
         |                               ~~~~~~~~~~~ ^ ~~~
   include/linux/vmstat.h:527:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
     527 |         return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
         |                            ~~~~~~~~~~~~~~~~~~~~~ ^
     528 |                            NR_VM_NUMA_EVENT_ITEMS +
         |                            ~~~~~~~~~~~~~~~~~~~~~~
   include/linux/vmstat.h:536:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
     536 |         return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
         |                            ~~~~~~~~~~~~~~~~~~~~~ ^
     537 |                            NR_VM_NUMA_EVENT_ITEMS +
         |                            ~~~~~~~~~~~~~~~~~~~~~~
>> arch/arm64/kvm/ptdump.c:263:9: warning: variable 'mc_pages' set but not used [-Wunused-but-set-variable]
     263 |         size_t mc_pages, pgd_pages;
         |                ^
   6 warnings generated.


vim +/mc_pages +263 arch/arm64/kvm/ptdump.c

   260	
   261	static struct kvm_pgtable_snapshot *kvm_ptdump_get_host_snapshot(void *data)
   262	{
 > 263		size_t mc_pages, pgd_pages;
   264		mc_pages = (size_t)data;
   265		pgd_pages = host_stage2_get_pgd_size() >> PAGE_SHIFT;
   266		return kvm_ptdump_get_snapshot(0, (size_t)data, pgd_pages);
   267	}
   268	

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