[kas:kvm-unmapped-poison 7/7] arch/x86/kvm/mmu/mmu.c:3697:7: warning: variable 'unmapped' set but not used

[kas:kvm-unmapped-poison 7/7] arch/x86/kvm/mmu/mmu.c:3697:7: warning: variable 'unmapped' set but not used

[kernel test robot]

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tree:   https://git.kernel.org/pub/scm/linux/kernel/git/kas/linux.git kvm-unmapped-poison
head:   51d4d402256b9c1b8e38be95bfa2bb28dc8189ad
commit: 51d4d402256b9c1b8e38be95bfa2bb28dc8189ad [7/7] KVM: unmap guest memory with poison
config: i386-allyesconfig (attached as .config)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
reproduce (this is a W=1 build):
        # https://git.kernel.org/pub/scm/linux/kernel/git/kas/linux.git/commit/?id=51d4d402256b9c1b8e38be95bfa2bb28dc8189ad
        git remote add kas https://git.kernel.org/pub/scm/linux/kernel/git/kas/linux.git
        git fetch --no-tags kas kvm-unmapped-poison
        git checkout 51d4d402256b9c1b8e38be95bfa2bb28dc8189ad
        # save the attached .config to linux build tree
        make W=1 ARCH=i386 

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

All warnings (new ones prefixed by >>):

   arch/x86/kvm/mmu/mmu.c: In function 'unmap_page':
>> arch/x86/kvm/mmu/mmu.c:3697:7: warning: variable 'unmapped' set but not used [-Wunused-but-set-variable]
    3697 |  bool unmapped;
         |       ^~~~~~~~


vim +/unmapped +3697 arch/x86/kvm/mmu/mmu.c

  3694	
  3695	static void unmap_page(struct page *page, gfn_t gfn)
  3696	{
> 3697		bool unmapped;
  3698	
  3699		if (gfn_is_shared(gfn))
  3700			return;
  3701	
  3702		if (TestSetPageHWPoison(page))
  3703			return;
  3704		get_page(page);
  3705		unmapped = try_to_unmap(page, TTU_IGNORE_MLOCK);
  3706	}
  3707	

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

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