[android-common:android16-6.12 2/2] drivers/virt/halla/hvm_vm.c:435: warning: Function parameter or struct member 'hvm' not described in 'hvm_destroy_vm'

[android-common:android16-6.12 2/2] drivers/virt/halla/hvm_vm.c:435: warning: Function parameter or struct member 'hvm' not described in 'hvm_destroy_vm'

[kernel test robot]

tree:   https://android.googlesource.com/kernel/common android16-6.12
head:   17584f778119ed93d9ae85feb43561e05f5254b0
commit: e17566975f96abbb6d6b84aa4784161e51264095 [2/2] ANDROID: virt: halla: Tie struct hvm lifetime to vcpu fds with a kref
config: arm64-allmodconfig (https://download.01.org/0day-ci/archive/20260611/202606111634.GKJbKAtr-lkp@intel.com/config)
compiler: clang version 23.0.0git (https://github.com/llvm/llvm-project f99ad325b987c3f2fb2d298f1569377c989b06d3)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260611/202606111634.GKJbKAtr-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/202606111634.GKJbKAtr-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> drivers/virt/halla/hvm_vm.c:435: warning: Function parameter or struct member 'hvm' not described in 'hvm_destroy_vm'

Kconfig warnings: (for reference only)
   WARNING: unmet direct dependencies detected for INTEL_MEI_ME
   Depends on [n]: X86 && PCI [=y]
   Selected by [m]:
   - INTEL_MEI_HDCP [=m] && (DRM_I915 [=n] || DRM_XE [=m])
   - INTEL_MEI_PXP [=m] && (DRM_I915 [=n] || DRM_XE [=m])


vim +435 drivers/virt/halla/hvm_vm.c

e17566975f96ab Junho Choi  2026-06-10  423  
e17566975f96ab Junho Choi  2026-06-10  424  /**
e17566975f96ab Junho Choi  2026-06-10  425   * hvm_destroy_vm() - VM fd release path.
e17566975f96ab Junho Choi  2026-06-10  426   *
e17566975f96ab Junho Choi  2026-06-10  427   * Tears down everything that owns guest memory or hypervisor S2
e17566975f96ab Junho Choi  2026-06-10  428   * resources, detaches the live vcpus from the hypervisor, removes
e17566975f96ab Junho Choi  2026-06-10  429   * the VM from hvm_list, then drops the VM fd's kref.  The struct
e17566975f96ab Junho Choi  2026-06-10  430   * hvm itself stays alive as long as any vcpu fd still holds a
e17566975f96ab Junho Choi  2026-06-10  431   * reference, so a vcpu ioctl racing with VM fd close stays on
e17566975f96ab Junho Choi  2026-06-10  432   * valid memory until the vcpu fd is also closed.
e17566975f96ab Junho Choi  2026-06-10  433   */
9007a992df6c7f Kim Mankyum 2025-08-27  434  static void hvm_destroy_vm(struct hvm *hvm)
9007a992df6c7f Kim Mankyum 2025-08-27 @435  {
e17566975f96ab Junho Choi  2026-06-10  436  	unsigned long ret;
9007a992df6c7f Kim Mankyum 2025-08-27  437  
9007a992df6c7f Kim Mankyum 2025-08-27  438  	mutex_lock(&hvm->lock);
9007a992df6c7f Kim Mankyum 2025-08-27  439  
f2801c7c470f11 Kim Mankyum 2026-04-14  440  	hvm_pre_destroy_vm(hvm);
9007a992df6c7f Kim Mankyum 2025-08-27  441  
9007a992df6c7f Kim Mankyum 2025-08-27  442  	hvm_vm_irqfd_release(hvm);
9007a992df6c7f Kim Mankyum 2025-08-27  443  
9007a992df6c7f Kim Mankyum 2025-08-27  444  	ret = hvm_reclaim_guest_memory(hvm);
9007a992df6c7f Kim Mankyum 2025-08-27  445  	hvm_reclaim_guest_stage2_pgtable(hvm);
9007a992df6c7f Kim Mankyum 2025-08-27  446  
9007a992df6c7f Kim Mankyum 2025-08-27  447  	hvm_destroy_vcpus(hvm);
9007a992df6c7f Kim Mankyum 2025-08-27  448  
9007a992df6c7f Kim Mankyum 2025-08-27  449  	mutex_lock(&hvm_list_lock);
9007a992df6c7f Kim Mankyum 2025-08-27  450  	list_del(&hvm->vm_list);
9007a992df6c7f Kim Mankyum 2025-08-27  451  	mutex_unlock(&hvm_list_lock);
9007a992df6c7f Kim Mankyum 2025-08-27  452  
9007a992df6c7f Kim Mankyum 2025-08-27  453  	mutex_unlock(&hvm->lock);
9007a992df6c7f Kim Mankyum 2025-08-27  454  
9007a992df6c7f Kim Mankyum 2025-08-27  455  	/**
9007a992df6c7f Kim Mankyum 2025-08-27  456  	 * Have to leave the page pinned as we don't know whether its
9007a992df6c7f Kim Mankyum 2025-08-27  457  	 * save to access
9007a992df6c7f Kim Mankyum 2025-08-27  458  	 */
9007a992df6c7f Kim Mankyum 2025-08-27  459  	if (!ret) {
9007a992df6c7f Kim Mankyum 2025-08-27  460  		/**
9007a992df6c7f Kim Mankyum 2025-08-27  461  		 * No need to lock here becauese it's single-threaded
9007a992df6c7f Kim Mankyum 2025-08-27  462  		 * execution
9007a992df6c7f Kim Mankyum 2025-08-27  463  		 */
9007a992df6c7f Kim Mankyum 2025-08-27  464  		hvm_destroy_all_ppage(hvm);
9007a992df6c7f Kim Mankyum 2025-08-27  465  	}
9007a992df6c7f Kim Mankyum 2025-08-27  466  
e17566975f96ab Junho Choi  2026-06-10  467  	hvm_vm_put(hvm);
9007a992df6c7f Kim Mankyum 2025-08-27  468  }
9007a992df6c7f Kim Mankyum 2025-08-27  469  

:::::: The code at line 435 was first introduced by commit
:::::: 9007a992df6c7fbc50cbcc21613b3a5c3c019ab6 ANDROID: drivers: virt: Initialization halla module

:::::: TO: Kim Mankyum <mankyum.kim@samsung.com>
:::::: CC: Greg Kroah-Hartman <gregkh@google.com>

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