arch/x86/include/asm/mshyperv.h:277: multiple definition of `hv_build_devid_type_pci'; arch/x86/kvm/vmx/vmx.o:arch/x86/include/asm/mshyperv.h:277: first defined here

arch/x86/include/asm/mshyperv.h:277: multiple definition of `hv_build_devid_type_pci'; arch/x86/kvm/vmx/vmx.o:arch/x86/include/asm/mshyperv.h:277: first defined here

[kernel test robot]

tree:   https://github.com/intel-lab-lkp/linux/commits/Mukesh-R/iommu-hyperv-rename-hyperv-iommu-c-to-hyperv-irq-c/20260503-090312
head:   f5351a96a6b1fd376b752c66714c4ae3b7598e18
commit: 28dd2164538308ef48df1f61c05c3cd1f6296c5f PCI: hv: Build device id for a VMBus device, export PCI devid function
date:   10 hours ago
config: x86_64-rhel-9.4 (https://download.01.org/0day-ci/archive/20260503/202605031213.PRvyoCZS-lkp@intel.com/config)
compiler: gcc-14 (Debian 14.2.0-19) 14.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260503/202605031213.PRvyoCZS-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/202605031213.PRvyoCZS-lkp@intel.com/

All error/warnings (new ones prefixed by >>):

   In file included from arch/x86/kernel/cpu/mshyperv.c:23:
>> arch/x86/include/asm/mshyperv.h:277:5: warning: no previous prototype for 'hv_build_devid_type_pci' [-Wmissing-prototypes]
     277 | u64 hv_build_devid_type_pci(struct pci_dev *pdev) { return 0; }
         |     ^~~~~~~~~~~~~~~~~~~~~~~
--
   ld: arch/x86/kvm/vmx/pmu_intel.o: in function `hv_build_devid_type_pci':
>> arch/x86/include/asm/mshyperv.h:277: multiple definition of `hv_build_devid_type_pci'; arch/x86/kvm/vmx/vmx.o:arch/x86/include/asm/mshyperv.h:277: first defined here
   ld: arch/x86/kvm/vmx/nested.o: in function `hv_build_devid_type_pci':
>> arch/x86/include/asm/mshyperv.h:277: multiple definition of `hv_build_devid_type_pci'; arch/x86/kvm/vmx/vmx.o:arch/x86/include/asm/mshyperv.h:277: first defined here
   ld: arch/x86/kvm/vmx/posted_intr.o: in function `hv_build_devid_type_pci':
>> arch/x86/include/asm/mshyperv.h:277: multiple definition of `hv_build_devid_type_pci'; arch/x86/kvm/vmx/vmx.o:arch/x86/include/asm/mshyperv.h:277: first defined here
   ld: arch/x86/kvm/vmx/main.o: in function `hv_build_devid_type_pci':
>> arch/x86/include/asm/mshyperv.h:277: multiple definition of `hv_build_devid_type_pci'; arch/x86/kvm/vmx/vmx.o:arch/x86/include/asm/mshyperv.h:277: first defined here
   ld: arch/x86/kvm/vmx/sgx.o: in function `hv_build_devid_type_pci':
>> arch/x86/include/asm/mshyperv.h:277: multiple definition of `hv_build_devid_type_pci'; arch/x86/kvm/vmx/vmx.o:arch/x86/include/asm/mshyperv.h:277: first defined here
   ld: arch/x86/kvm/vmx/hyperv.o: in function `hv_build_devid_type_pci':
>> arch/x86/include/asm/mshyperv.h:277: multiple definition of `hv_build_devid_type_pci'; arch/x86/kvm/vmx/vmx.o:arch/x86/include/asm/mshyperv.h:277: first defined here
--
   ld: arch/x86/kvm/hyperv.o: in function `hv_build_devid_type_pci':
>> arch/x86/include/asm/mshyperv.h:277: multiple definition of `hv_build_devid_type_pci'; arch/x86/kvm/x86.o:arch/x86/include/asm/mshyperv.h:277: first defined here
--
   ld: arch/x86/kvm/svm/nested.o: in function `hv_build_devid_type_pci':
>> arch/x86/include/asm/mshyperv.h:277: multiple definition of `hv_build_devid_type_pci'; arch/x86/kvm/svm/svm.o:arch/x86/include/asm/mshyperv.h:277: first defined here
   ld: arch/x86/kvm/svm/hyperv.o: in function `hv_build_devid_type_pci':
>> arch/x86/include/asm/mshyperv.h:277: multiple definition of `hv_build_devid_type_pci'; arch/x86/kvm/svm/svm.o:arch/x86/include/asm/mshyperv.h:277: first defined here


vim +277 arch/x86/include/asm/mshyperv.h

   273	
   274	#if IS_ENABLED(CONFIG_HYPERV_IOMMU)
   275	u64 hv_build_devid_type_pci(struct pci_dev *pdev);
   276	#else
 > 277	u64 hv_build_devid_type_pci(struct pci_dev *pdev) { return 0; }
   278	#endif /* IS_ENABLED(CONFIG_HYPERV_IOMMU) */
   279	

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