[linux-next:master 12154/12271] tools/testing/selftests/kvm/x86_64/hyperv_features.c:618: undefined reference to `vm_handle_exception'

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

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Hi Stephen,

First bad commit (maybe != root cause):

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head:   4238b1710eadd18dd16de0288a2bc5bb84614b4e
commit: 954e285eafdd4ac36b114a7f6abce3f792591ea8 [12154/12271] Merge remote-tracking branch 'kvm-arm/next'
config: x86_64-rhel-8.3-kselftests (attached as .config)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
reproduce (this is a W=1 build):
        # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=954e285eafdd4ac36b114a7f6abce3f792591ea8
        git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
        git fetch --no-tags linux-next master
        git checkout 954e285eafdd4ac36b114a7f6abce3f792591ea8
        # save the attached .config to linux build tree
        make W=1 ARCH=x86_64 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

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

   x86_64/hyperv_features.c: In function 'main':
>> x86_64/hyperv_features.c:618:2: warning: implicit declaration of function 'vm_handle_exception' [-Wimplicit-function-declaration]
     618 |  vm_handle_exception(vm, GP_VECTOR, guest_gp_handler);
         |  ^~~~~~~~~~~~~~~~~~~
   /usr/bin/ld: /tmp/ccIBsVo3.o: in function `main':
>> tools/testing/selftests/kvm/x86_64/hyperv_features.c:618: undefined reference to `vm_handle_exception'
   collect2: error: ld returned 1 exit status
--
   x86_64/hyperv_features.c: In function 'main':
>> x86_64/hyperv_features.c:618:2: warning: implicit declaration of function 'vm_handle_exception' [-Wimplicit-function-declaration]
     618 |  vm_handle_exception(vm, GP_VECTOR, guest_gp_handler);
         |  ^~~~~~~~~~~~~~~~~~~
   /usr/bin/ld: /tmp/cc7zqGvp.o: in function `main':
>> tools/testing/selftests/kvm/x86_64/hyperv_features.c:618: undefined reference to `vm_handle_exception'
   collect2: error: ld returned 1 exit status


vim +618 tools/testing/selftests/kvm/x86_64/hyperv_features.c

e2e1cc1fbe54a9 Vitaly Kuznetsov 2021-05-21  593  
e2e1cc1fbe54a9 Vitaly Kuznetsov 2021-05-21  594  int main(void)
e2e1cc1fbe54a9 Vitaly Kuznetsov 2021-05-21  595  {
e2e1cc1fbe54a9 Vitaly Kuznetsov 2021-05-21  596  	struct kvm_cpuid2 *best;
e2e1cc1fbe54a9 Vitaly Kuznetsov 2021-05-21  597  	struct kvm_vm *vm;
e2e1cc1fbe54a9 Vitaly Kuznetsov 2021-05-21  598  	vm_vaddr_t msr_gva, hcall_page, hcall_params;
e2e1cc1fbe54a9 Vitaly Kuznetsov 2021-05-21  599  	struct kvm_enable_cap cap = {
e2e1cc1fbe54a9 Vitaly Kuznetsov 2021-05-21  600  		.cap = KVM_CAP_HYPERV_ENFORCE_CPUID,
e2e1cc1fbe54a9 Vitaly Kuznetsov 2021-05-21  601  		.args = {1}
e2e1cc1fbe54a9 Vitaly Kuznetsov 2021-05-21  602  	};
e2e1cc1fbe54a9 Vitaly Kuznetsov 2021-05-21  603  
e2e1cc1fbe54a9 Vitaly Kuznetsov 2021-05-21  604  	/* Test MSRs */
e2e1cc1fbe54a9 Vitaly Kuznetsov 2021-05-21  605  	vm = vm_create_default(VCPU_ID, 0, guest_msr);
e2e1cc1fbe54a9 Vitaly Kuznetsov 2021-05-21  606  
e2e1cc1fbe54a9 Vitaly Kuznetsov 2021-05-21  607  	msr_gva = vm_vaddr_alloc(vm, getpagesize(), 0x10000, 0, 0);
e2e1cc1fbe54a9 Vitaly Kuznetsov 2021-05-21  608  	memset(addr_gva2hva(vm, msr_gva), 0x0, getpagesize());
e2e1cc1fbe54a9 Vitaly Kuznetsov 2021-05-21  609  	vcpu_args_set(vm, VCPU_ID, 1, msr_gva);
e2e1cc1fbe54a9 Vitaly Kuznetsov 2021-05-21  610  	vcpu_enable_cap(vm, VCPU_ID, &cap);
e2e1cc1fbe54a9 Vitaly Kuznetsov 2021-05-21  611  
e2e1cc1fbe54a9 Vitaly Kuznetsov 2021-05-21  612  	vcpu_set_hv_cpuid(vm, VCPU_ID);
e2e1cc1fbe54a9 Vitaly Kuznetsov 2021-05-21  613  
e2e1cc1fbe54a9 Vitaly Kuznetsov 2021-05-21  614  	best = kvm_get_supported_hv_cpuid();
e2e1cc1fbe54a9 Vitaly Kuznetsov 2021-05-21  615  
e2e1cc1fbe54a9 Vitaly Kuznetsov 2021-05-21  616  	vm_init_descriptor_tables(vm);
e2e1cc1fbe54a9 Vitaly Kuznetsov 2021-05-21  617  	vcpu_init_descriptor_tables(vm, VCPU_ID);
e2e1cc1fbe54a9 Vitaly Kuznetsov 2021-05-21 @618  	vm_handle_exception(vm, GP_VECTOR, guest_gp_handler);

:::::: The code at line 618 was first introduced by commit
:::::: e2e1cc1fbe54a9520956a4539a3676d2ebf122dd KVM: selftests: Introduce hyperv_features test

:::::: TO: Vitaly Kuznetsov <vkuznets@redhat.com>
:::::: CC: Paolo Bonzini <pbonzini@redhat.com>

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

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