Hi Ben,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on kvm/queue]
[also build test WARNING on mst-vhost/linux-next]
[cannot apply to kvm/linux-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#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Ben-Gardon/KVM-x86-MMU-Factor-rmap-operations-out-of-mmu-c/20221207-013733
base:   https://git.kernel.org/pub/scm/virt/kvm/kvm.git queue
patch link:    https://lore.kernel.org/r/20221206173601.549281-2-bgardon%40google.com
patch subject: [PATCH 1/7] KVM: x86/MMU: Move pte_list operations to rmap.c
config: x86_64-allyesconfig
compiler: gcc-11 (Debian 11.3.0-8) 11.3.0
reproduce (this is a W=1 build):
        # https://github.com/intel-lab-lkp/linux/commit/22e700d90cb6d8c054c5cacffe0be568004918a8
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Ben-Gardon/KVM-x86-MMU-Factor-rmap-operations-out-of-mmu-c/20221207-013733
        git checkout 22e700d90cb6d8c054c5cacffe0be568004918a8
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash arch/x86/kvm/

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

All warnings (new ones prefixed by >>):

   In file included from arch/x86/kvm/debugfs.c:12:
>> arch/x86/kvm/mmu/rmap.h:26:27: warning: 'pte_list_desc_cache' defined but not used [-Wunused-variable]
      26 | static struct kmem_cache *pte_list_desc_cache;
         |                           ^~~~~~~~~~~~~~~~~~~


vim +/pte_list_desc_cache +26 arch/x86/kvm/mmu/rmap.h

    25	
  > 26	static struct kmem_cache *pte_list_desc_cache;
    27	

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