[openeuler:openEuler-1.0-LTS 15383/23901] fs/proc/etmem_scan.c:823: undefined reference to `kvm_flush_remote_tlbs'

[openeuler:openEuler-1.0-LTS 15383/23901] fs/proc/etmem_scan.c:823: undefined reference to `kvm_flush_remote_tlbs'

[kernel test robot]

tree:   https://gitee.com/openeuler/kernel.git openEuler-1.0-LTS
head:   7b2baa68ab7f9f7fc4023e8121ddb050b2e45f30
commit: bad4d8833739acc8eef306e7ad5c7877f9f4f0fb [15383/23901] etmem: add etmem-scan feature
config: x86_64-randconfig-072-20241029 (https://download.01.org/0day-ci/archive/20241029/202410291925.OMbLBBuG-lkp@intel.com/config)
compiler: gcc-12 (Debian 12.2.0-14) 12.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241029/202410291925.OMbLBBuG-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/202410291925.OMbLBBuG-lkp@intel.com/

All errors (new ones prefixed by >>):

   ld: warning: arch/x86/lib/csum-copy_64.o: missing .note.GNU-stack section implies executable stack
   ld: NOTE: This behaviour is deprecated and will be removed in a future version of the linker
   ld: warning: arch/x86/lib/csum-copy_64.o: missing .note.GNU-stack section implies executable stack
   ld: NOTE: This behaviour is deprecated and will be removed in a future version of the linker
   ld: warning: .tmp_vmlinux1 has a LOAD segment with RWX permissions
   ld: fs/proc/etmem_scan.o: in function `page_scan_release':
>> fs/proc/etmem_scan.c:823: undefined reference to `kvm_flush_remote_tlbs'


vim +823 fs/proc/etmem_scan.c

   804	
   805	static int page_scan_release(struct inode *inode, struct file *file)
   806	{
   807		struct mm_struct *mm = file->private_data;
   808		struct kvm *kvm;
   809		int ret = 0;
   810	
   811		if (!mm) {
   812			ret = -EBADF;
   813			goto out;
   814		}
   815	
   816		kvm = mm_kvm(mm);
   817		if (!kvm) {
   818			ret = -EINVAL;
   819			goto out;
   820		}
   821	#ifdef CONFIG_X86_64
   822		spin_lock(&kvm->mmu_lock);
 > 823		kvm_flush_remote_tlbs(kvm);
   824		spin_unlock(&kvm->mmu_lock);
   825	#endif
   826	
   827	out:
   828		module_put(THIS_MODULE);
   829		return ret;
   830	}
   831	

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki