[android-common:android16-6.12-2026-03 2/2] arch/arm64/kvm/hyp/nvhe/psci-relay.c:28:40: warning: 'enum pkvm_psci_notification' declared inside parameter list will not be visible outside of this definition or declaration

[kernel test robot <lkp@intel.com>]

Hi Quentin,

FYI, the error/warning still remains.

tree:   https://android.googlesource.com/kernel/common android16-6.12-2026-03
head:   ab1b4fc5ca8eed85eb9259015586db20a639526a
commit: 68d457650f79d4b9f8f23b82a8d0a06c4c74419d [2/2] ANDROID: KVM: arm64: Notify pKVM modules of PSCI events
config: arm64-randconfig-r2105-20261110 (https://download.01.org/0day-ci/archive/20261110/202611102152.VYIBQedM-lkp@intel.com/config)
compiler: aarch64-linux-gcc (GCC) 10.5.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20261110/202611102152.VYIBQedM-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/202611102152.VYIBQedM-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> arch/arm64/kvm/hyp/nvhe/psci-relay.c:28:40: warning: 'enum pkvm_psci_notification' declared inside parameter list will not be visible outside of this definition or declaration
      28 | static void (*pkvm_psci_notifier)(enum pkvm_psci_notification, struct user_pt_regs *);
         |                                        ^~~~~~~~~~~~~~~~~~~~~~
   arch/arm64/kvm/hyp/nvhe/psci-relay.c:29:35: warning: 'enum pkvm_psci_notification' declared inside parameter list will not be visible outside of this definition or declaration
      29 | static void pkvm_psci_notify(enum pkvm_psci_notification notif, struct kvm_cpu_context *host_ctxt)
         |                                   ^~~~~~~~~~~~~~~~~~~~~~
   arch/arm64/kvm/hyp/nvhe/psci-relay.c:29:58: error: parameter 1 ('notif') has incomplete type
      29 | static void pkvm_psci_notify(enum pkvm_psci_notification notif, struct kvm_cpu_context *host_ctxt)
         |                              ~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~
   arch/arm64/kvm/hyp/nvhe/psci-relay.c:29:13: error: function declaration isn't a prototype [-Werror=strict-prototypes]
      29 | static void pkvm_psci_notify(enum pkvm_psci_notification notif, struct kvm_cpu_context *host_ctxt)
         |             ^~~~~~~~~~~~~~~~
   arch/arm64/kvm/hyp/nvhe/psci-relay.c: In function 'pkvm_psci_notify':
   arch/arm64/kvm/hyp/nvhe/psci-relay.c:32:22: error: type of formal parameter 1 is incomplete
      32 |   pkvm_psci_notifier(notif, &host_ctxt->regs);
         |                      ^~~~~
   arch/arm64/kvm/hyp/nvhe/psci-relay.c: At top level:
   arch/arm64/kvm/hyp/nvhe/psci-relay.c:35:51: warning: 'enum pkvm_psci_notification' declared inside parameter list will not be visible outside of this definition or declaration
      35 | int __pkvm_register_psci_notifier(void (*cb)(enum pkvm_psci_notification, struct user_pt_regs *))
         |                                                   ^~~~~~~~~~~~~~~~~~~~~~
   arch/arm64/kvm/hyp/nvhe/psci-relay.c:35:5: warning: no previous prototype for '__pkvm_register_psci_notifier' [-Wmissing-prototypes]
      35 | int __pkvm_register_psci_notifier(void (*cb)(enum pkvm_psci_notification, struct user_pt_regs *))
         |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   arch/arm64/kvm/hyp/nvhe/psci-relay.c: In function 'psci_cpu_suspend':
   arch/arm64/kvm/hyp/nvhe/psci-relay.c:191:19: error: 'PKVM_PSCI_CPU_SUSPEND' undeclared (first use in this function); did you mean 'KVM_PSCI_FN_CPU_SUSPEND'?
     191 |  pkvm_psci_notify(PKVM_PSCI_CPU_SUSPEND, host_ctxt);
         |                   ^~~~~~~~~~~~~~~~~~~~~
         |                   KVM_PSCI_FN_CPU_SUSPEND
   arch/arm64/kvm/hyp/nvhe/psci-relay.c:191:19: note: each undeclared identifier is reported only once for each function it appears in
   arch/arm64/kvm/hyp/nvhe/psci-relay.c: In function 'psci_system_suspend':
   arch/arm64/kvm/hyp/nvhe/psci-relay.c:222:19: error: 'PKVM_PSCI_SYSTEM_SUSPEND' undeclared (first use in this function); did you mean 'KVM_CAP_ARM_SYSTEM_SUSPEND'?
     222 |  pkvm_psci_notify(PKVM_PSCI_SYSTEM_SUSPEND, host_ctxt);
         |                   ^~~~~~~~~~~~~~~~~~~~~~~~
         |                   KVM_CAP_ARM_SYSTEM_SUSPEND
   arch/arm64/kvm/hyp/nvhe/psci-relay.c: In function '__kvm_host_psci_cpu_entry':
   arch/arm64/kvm/hyp/nvhe/psci-relay.c:249:19: error: 'PKVM_PSCI_CPU_ENTRY' undeclared (first use in this function)
     249 |  pkvm_psci_notify(PKVM_PSCI_CPU_ENTRY, host_ctxt);
         |                   ^~~~~~~~~~~~~~~~~~~
   cc1: some warnings being treated as errors


vim +28 arch/arm64/kvm/hyp/nvhe/psci-relay.c

    27	
  > 28	static void (*pkvm_psci_notifier)(enum pkvm_psci_notification, struct user_pt_regs *);
    29	static void pkvm_psci_notify(enum pkvm_psci_notification notif, struct kvm_cpu_context *host_ctxt)
    30	{
    31		if (smp_load_acquire(&pkvm_psci_notifier))
    32			pkvm_psci_notifier(notif, &host_ctxt->regs);
    33	}
    34	

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