[PATCH v6 14/19] perf: arm_pmuv3: Handle IRQs for Partitioned PMU guest counters

[kernel test robot]

Hi Colton,

kernel test robot noticed the following build warnings:

[auto build test WARNING on 63804fed149a6750ffd28610c5c1c98cce6bd377]

url:    https://github.com/intel-lab-lkp/linux/commits/Colton-Lewis/arm64-cpufeature-Add-cpucap-for-HPMN0/20260210-064939
base:   63804fed149a6750ffd28610c5c1c98cce6bd377
patch link:    https://lore.kernel.org/r/20260209221414.2169465-15-coltonlewis%40google.com
patch subject: [PATCH v6 14/19] perf: arm_pmuv3: Handle IRQs for Partitioned PMU guest counters
config: arm64-allnoconfig-bpf (https://download.01.org/0day-ci/archive/20260210/202602100634.QKTI6Wc4-lkp@intel.com/config)
compiler: aarch64-linux-gnu-gcc (Debian 14.2.0-19) 14.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260210/202602100634.QKTI6Wc4-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 at intel.com>
| Closes: https://lore.kernel.org/r/202602100634.QKTI6Wc4-lkp@intel.com/

All warnings (new ones prefixed by >>):

   In file included from ./arch/arm64/include/asm/kvm_host.h:38,
                    from ./include/linux/kvm_host.h:45,
                    from arch/arm64/kernel/asm-offsets.c:16:
>> ./include/kvm/arm_pmu.h:310:52: warning: 'struct arm_pmu' declared inside parameter list will not be visible outside of this definition or declaration
     310 | static inline void kvm_pmu_handle_guest_irq(struct arm_pmu *pmu, u64 pmovsr) {}
         |                                                    ^~~~~~~
   ./include/kvm/arm_pmu.h:281:12: warning: 'kvm_vcpu_read_pmuserenr' defined but not used [-Wunused-function]
     281 | static u64 kvm_vcpu_read_pmuserenr(struct kvm_vcpu *vcpu)
         |            ^~~~~~~~~~~~~~~~~~~~~~~


vim +310 ./include/kvm/arm_pmu.h

baec257585c39b Colton Lewis 2026-02-09  307  
baec257585c39b Colton Lewis 2026-02-09  308  static inline void kvm_pmu_host_counters_enable(void) {}
baec257585c39b Colton Lewis 2026-02-09  309  static inline void kvm_pmu_host_counters_disable(void) {}
ad5f1148c818bf Colton Lewis 2026-02-09 @310  static inline void kvm_pmu_handle_guest_irq(struct arm_pmu *pmu, u64 pmovsr) {}
baec257585c39b Colton Lewis 2026-02-09  311  

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