[kvmarm:kvm-arm64/nv-wip-v5.0-rc1 45/75] arch/arm/kvm/../../../virt/kvm/arm/arm.c:1003:3: error: implicit declaration of function 'kvm_nested_s2_clear'; did you mean '__nodes_clear'?

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tree:   https://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm.git kvm-arm64/nv-wip-v5.0-rc1
head:   688c386ca096f2c1f2eee386697586c88df5d5bc
commit: 3da39279c7b03e5f797de7c283a0de99f69e6a17 [45/75] KVM: arm64: nv: Unmap/flush shadow stage 2 page tables
config: arm-axm55xx_defconfig (attached as .config)
compiler: arm-linux-gnueabi-gcc (Debian 7.2.0-11) 7.2.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        git checkout 3da39279c7b03e5f797de7c283a0de99f69e6a17
        # save the attached .config to linux build tree
        GCC_VERSION=7.2.0 make.cross ARCH=arm 

All errors (new ones prefixed by >>):

   arch/arm/kvm/../../../virt/kvm/arm/arm.c: In function 'kvm_arch_init_vm':
   arch/arm/kvm/../../../virt/kvm/arm/arm.c:133:39: error: 'struct kvm_arch' has no member named 'mmu'
     ret = kvm_alloc_stage2_pgd(&kvm->arch.mmu);
                                          ^
   arch/arm/kvm/../../../virt/kvm/arm/arm.c:138:11: error: 'struct kvm_arch' has no member named 'mmu'
     kvm->arch.mmu.vmid.vmid_gen = 0;
              ^
   arch/arm/kvm/../../../virt/kvm/arm/arm.c:139:11: error: 'struct kvm_arch' has no member named 'mmu'
     kvm->arch.mmu.kvm = kvm;
              ^
   arch/arm/kvm/../../../virt/kvm/arm/arm.c:140:11: error: 'struct kvm_arch' has no member named 'mmu'
     kvm->arch.mmu.vttbr = -1;
              ^
   arch/arm/kvm/../../../virt/kvm/arm/arm.c:141:11: error: 'struct kvm_arch' has no member named 'mmu'
     kvm->arch.mmu.nested_stage2_enabled = false;
              ^
   arch/arm/kvm/../../../virt/kvm/arm/arm.c:143:11: error: 'struct kvm_arch' has no member named 'nested_mmus'
     kvm->arch.nested_mmus = NULL;
              ^
   arch/arm/kvm/../../../virt/kvm/arm/arm.c:144:11: error: 'struct kvm_arch' has no member named 'nested_mmus_size'
     kvm->arch.nested_mmus_size = 0;
              ^
   arch/arm/kvm/../../../virt/kvm/arm/arm.c:158:32: error: 'struct kvm_arch' has no member named 'mmu'
     kvm_free_stage2_pgd(&kvm->arch.mmu);
                                   ^
   arch/arm/kvm/../../../virt/kvm/arm/arm.c: In function 'kvm_arch_vcpu_init':
   arch/arm/kvm/../../../virt/kvm/arm/arm.c:363:12: error: 'struct kvm_vcpu_arch' has no member named 'hw_mmu'
     vcpu->arch.hw_mmu = &vcpu->kvm->arch.mmu;
               ^
   arch/arm/kvm/../../../virt/kvm/arm/arm.c:363:38: error: 'struct kvm_arch' has no member named 'mmu'
     vcpu->arch.hw_mmu = &vcpu->kvm->arch.mmu;
                                         ^
   arch/arm/kvm/../../../virt/kvm/arm/arm.c: In function 'kvm_arch_vcpu_load':
   arch/arm/kvm/../../../virt/kvm/arm/arm.c:372:2: error: implicit declaration of function 'kvm_vcpu_load_hw_mmu'; did you mean 'kvm_vcpu_load_sysregs'? [-Werror=implicit-function-declaration]
     kvm_vcpu_load_hw_mmu(vcpu);
     ^~~~~~~~~~~~~~~~~~~~
     kvm_vcpu_load_sysregs
   arch/arm/kvm/../../../virt/kvm/arm/arm.c: In function 'kvm_arch_vcpu_put':
   arch/arm/kvm/../../../virt/kvm/arm/arm.c:406:2: error: implicit declaration of function 'kvm_vcpu_put_hw_mmu'; did you mean 'kvm_vcpu_dabt_is_cm'? [-Werror=implicit-function-declaration]
     kvm_vcpu_put_hw_mmu(vcpu);
     ^~~~~~~~~~~~~~~~~~~
     kvm_vcpu_dabt_is_cm
   arch/arm/kvm/../../../virt/kvm/arm/arm.c: In function 'kvm_arch_vcpu_ioctl_run':
   arch/arm/kvm/../../../virt/kvm/arm/arm.c:689:26: error: 'struct kvm_vcpu_arch' has no member named 'hw_mmu'
      update_vmid(&vcpu->arch.hw_mmu->vmid);
                             ^
   arch/arm/kvm/../../../virt/kvm/arm/arm.c:738:48: error: 'struct kvm_vcpu_arch' has no member named 'hw_mmu'
      if (ret <= 0 || need_new_vmid_gen(&vcpu->arch.hw_mmu->vmid) ||
                                                   ^
   arch/arm/kvm/../../../virt/kvm/arm/arm.c: In function 'kvm_vcpu_set_target':
   arch/arm/kvm/../../../virt/kvm/arm/arm.c:973:15: error: 'KVM_ARM_VCPU_NESTED_VIRT' undeclared (first use in this function); did you mean 'KVM_ARM_VCPU_TIMER_CTRL'?
     if (test_bit(KVM_ARM_VCPU_NESTED_VIRT, vcpu->arch.features)) {
                  ^~~~~~~~~~~~~~~~~~~~~~~~
                  KVM_ARM_VCPU_TIMER_CTRL
   arch/arm/kvm/../../../virt/kvm/arm/arm.c:973:15: note: each undeclared identifier is reported only once for each function it appears in
   arch/arm/kvm/../../../virt/kvm/arm/arm.c:976:8: error: implicit declaration of function 'cpus_have_const_cap'; did you mean 'cpu_have_feature'? [-Werror=implicit-function-declaration]
      if (!cpus_have_const_cap(ARM64_HAS_NESTED_VIRT))
           ^~~~~~~~~~~~~~~~~~~
           cpu_have_feature
   arch/arm/kvm/../../../virt/kvm/arm/arm.c:976:28: error: 'ARM64_HAS_NESTED_VIRT' undeclared (first use in this function); did you mean 'KVM_ARM_VCPU_NESTED_VIRT'?
      if (!cpus_have_const_cap(ARM64_HAS_NESTED_VIRT))
                               ^~~~~~~~~~~~~~~~~~~~~
                               KVM_ARM_VCPU_NESTED_VIRT
   arch/arm/kvm/../../../virt/kvm/arm/arm.c:979:9: error: implicit declaration of function 'kvm_vcpu_init_nested'; did you mean 'kvm_vcpu_initialized'? [-Werror=implicit-function-declaration]
      ret = kvm_vcpu_init_nested(vcpu);
            ^~~~~~~~~~~~~~~~~~~~
            kvm_vcpu_initialized
   arch/arm/kvm/../../../virt/kvm/arm/arm.c: In function 'kvm_arch_vcpu_ioctl_vcpu_init':
>> arch/arm/kvm/../../../virt/kvm/arm/arm.c:1003:3: error: implicit declaration of function 'kvm_nested_s2_clear'; did you mean '__nodes_clear'? [-Werror=implicit-function-declaration]
      kvm_nested_s2_clear(vcpu->kvm);
      ^~~~~~~~~~~~~~~~~~~
      __nodes_clear
   cc1: some warnings being treated as errors
--
                             ^~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:182:13: note: expected 'struct kvm_s2_mmu *' but argument is of type 'struct kvm_s2_mmu *'
    static void clear_stage2_pud_entry(struct kvm_s2_mmu *mmu, pud_t *pud, phys_addr_t addr)
                ^~~~~~~~~~~~~~~~~~~~~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c: At top level:
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:313:38: warning: 'struct kvm_s2_mmu' declared inside parameter list will not be visible outside of this definition or declaration
    static void unmap_stage2_puds(struct kvm_s2_mmu *mmu, pgd_t *pgd,
                                         ^~~~~~~~~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c: In function 'unmap_stage2_puds':
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:316:23: error: dereferencing pointer to incomplete type 'struct kvm_s2_mmu'
     struct kvm *kvm = mmu->kvm;
                          ^~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:328:28: error: passing argument 1 of 'kvm_tlb_flush_vmid_ipa' from incompatible pointer type [-Werror=incompatible-pointer-types]
        kvm_tlb_flush_vmid_ipa(mmu, addr);
                               ^~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:69:13: note: expected 'struct kvm_s2_mmu *' but argument is of type 'struct kvm_s2_mmu *'
    static void kvm_tlb_flush_vmid_ipa(struct kvm_s2_mmu *mmu, phys_addr_t ipa)
                ^~~~~~~~~~~~~~~~~~~~~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:332:23: error: passing argument 1 of 'unmap_stage2_pmds' from incompatible pointer type [-Werror=incompatible-pointer-types]
        unmap_stage2_pmds(mmu, pud, addr, next);
                          ^~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:283:13: note: expected 'struct kvm_s2_mmu *' but argument is of type 'struct kvm_s2_mmu *'
    static void unmap_stage2_pmds(struct kvm_s2_mmu *mmu, pud_t *pud,
                ^~~~~~~~~~~~~~~~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:338:26: error: passing argument 1 of 'clear_stage2_pgd_entry' from incompatible pointer type [-Werror=incompatible-pointer-types]
      clear_stage2_pgd_entry(mmu, pgd, start_addr);
                             ^~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:171:13: note: expected 'struct kvm_s2_mmu *' but argument is of type 'struct kvm_s2_mmu *'
    static void clear_stage2_pgd_entry(struct kvm_s2_mmu *mmu, pgd_t *pgd, phys_addr_t addr)
                ^~~~~~~~~~~~~~~~~~~~~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:316:14: warning: unused variable 'kvm' [-Wunused-variable]
     struct kvm *kvm = mmu->kvm;
                 ^~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c: At top level:
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:352:36: warning: 'struct kvm_s2_mmu' declared inside parameter list will not be visible outside of this definition or declaration
    void kvm_unmap_stage2_range(struct kvm_s2_mmu *mmu, phys_addr_t start, u64 size)
                                       ^~~~~~~~~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c: In function 'kvm_unmap_stage2_range':
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:354:23: error: dereferencing pointer to incomplete type 'struct kvm_s2_mmu'
     struct kvm *kvm = mmu->kvm;
                          ^~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:373:22: error: passing argument 1 of 'unmap_stage2_puds' from incompatible pointer type [-Werror=incompatible-pointer-types]
       unmap_stage2_puds(mmu, pgd, addr, next);
                         ^~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:313:13: note: expected 'struct kvm_s2_mmu *' but argument is of type 'struct kvm_s2_mmu *'
    static void unmap_stage2_puds(struct kvm_s2_mmu *mmu, pgd_t *pgd,
                ^~~~~~~~~~~~~~~~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c: At top level:
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:383:38: warning: 'struct kvm_s2_mmu' declared inside parameter list will not be visible outside of this definition or declaration
    static void stage2_flush_ptes(struct kvm_s2_mmu *mmu, pmd_t *pmd,
                                         ^~~~~~~~~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:395:38: warning: 'struct kvm_s2_mmu' declared inside parameter list will not be visible outside of this definition or declaration
    static void stage2_flush_pmds(struct kvm_s2_mmu *mmu, pud_t *pud,
                                         ^~~~~~~~~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c: In function 'stage2_flush_pmds':
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:398:23: error: dereferencing pointer to incomplete type 'struct kvm_s2_mmu'
     struct kvm *kvm = mmu->kvm;
                          ^~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:409:23: error: passing argument 1 of 'stage2_flush_ptes' from incompatible pointer type [-Werror=incompatible-pointer-types]
        stage2_flush_ptes(mmu, pmd, addr, next);
                          ^~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:383:13: note: expected 'struct kvm_s2_mmu *' but argument is of type 'struct kvm_s2_mmu *'
    static void stage2_flush_ptes(struct kvm_s2_mmu *mmu, pmd_t *pmd,
                ^~~~~~~~~~~~~~~~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c: At top level:
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:414:38: warning: 'struct kvm_s2_mmu' declared inside parameter list will not be visible outside of this definition or declaration
    static void stage2_flush_puds(struct kvm_s2_mmu *mmu, pgd_t *pgd,
                                         ^~~~~~~~~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c: In function 'stage2_flush_puds':
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:417:23: error: dereferencing pointer to incomplete type 'struct kvm_s2_mmu'
     struct kvm *kvm = mmu->kvm;
                          ^~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:428:23: error: passing argument 1 of 'stage2_flush_pmds' from incompatible pointer type [-Werror=incompatible-pointer-types]
        stage2_flush_pmds(mmu, pud, addr, next);
                          ^~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:395:13: note: expected 'struct kvm_s2_mmu *' but argument is of type 'struct kvm_s2_mmu *'
    static void stage2_flush_pmds(struct kvm_s2_mmu *mmu, pud_t *pud,
                ^~~~~~~~~~~~~~~~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:417:14: warning: unused variable 'kvm' [-Wunused-variable]
     struct kvm *kvm = mmu->kvm;
                 ^~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c: At top level:
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:433:36: warning: 'struct kvm_s2_mmu' declared inside parameter list will not be visible outside of this definition or declaration
    void kvm_stage2_flush_range(struct kvm_s2_mmu *mmu,
                                       ^~~~~~~~~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c: In function 'kvm_stage2_flush_range':
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:436:23: error: dereferencing pointer to incomplete type 'struct kvm_s2_mmu'
     struct kvm *kvm = mmu->kvm;
                          ^~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:444:22: error: passing argument 1 of 'stage2_flush_puds' from incompatible pointer type [-Werror=incompatible-pointer-types]
       stage2_flush_puds(mmu, pgd, addr, next);
                         ^~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:414:13: note: expected 'struct kvm_s2_mmu *' but argument is of type 'struct kvm_s2_mmu *'
    static void stage2_flush_puds(struct kvm_s2_mmu *mmu, pgd_t *pgd,
                ^~~~~~~~~~~~~~~~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c: At top level:
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:448:41: warning: 'struct kvm_s2_mmu' declared inside parameter list will not be visible outside of this definition or declaration
    static void stage2_flush_memslot(struct kvm_s2_mmu *mmu,
                                            ^~~~~~~~~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c: In function 'stage2_flush_memslot':
>> arch/arm/kvm/../../../virt/kvm/arm/mmu.c:454:25: error: passing argument 1 of 'kvm_stage2_flush_range' from incompatible pointer type [-Werror=incompatible-pointer-types]
     kvm_stage2_flush_range(mmu, addr, end);
                            ^~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:433:6: note: expected 'struct kvm_s2_mmu *' but argument is of type 'struct kvm_s2_mmu *'
    void kvm_stage2_flush_range(struct kvm_s2_mmu *mmu,
         ^~~~~~~~~~~~~~~~~~~~~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c: In function 'stage2_flush_vm':
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:475:34: error: 'struct kvm_arch' has no member named 'mmu'
      stage2_flush_memslot(&kvm->arch.mmu, memslot);
                                     ^
>> arch/arm/kvm/../../../virt/kvm/arm/mmu.c:477:2: error: implicit declaration of function 'kvm_nested_s2_flush'; did you mean 'kvm_set_way_flush'? [-Werror=implicit-function-declaration]
     kvm_nested_s2_flush(kvm);
     ^~~~~~~~~~~~~~~~~~~
     kvm_set_way_flush
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c: At top level:
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:928:33: warning: 'struct kvm_s2_mmu' declared inside parameter list will not be visible outside of this definition or declaration
    int kvm_alloc_stage2_pgd(struct kvm_s2_mmu *mmu)
                                    ^~~~~~~~~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:928:5: error: conflicting types for 'kvm_alloc_stage2_pgd'
    int kvm_alloc_stage2_pgd(struct kvm_s2_mmu *mmu)
        ^~~~~~~~~~~~~~~~~~~~
   In file included from arch/arm/kvm/../../../virt/kvm/arm/mmu.c:28:0:
   arch/arm/include/asm/kvm_mmu.h:67:5: note: previous declaration of 'kvm_alloc_stage2_pgd' was here
    int kvm_alloc_stage2_pgd(struct kvm *kvm);
        ^~~~~~~~~~~~~~~~~~~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c: In function 'kvm_alloc_stage2_pgd':
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:932:9: error: dereferencing pointer to incomplete type 'struct kvm_s2_mmu'
     if (mmu->pgd != NULL) {
            ^~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c: In function 'stage2_unmap_memslot':
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:982:37: error: 'struct kvm_arch' has no member named 'mmu'
       kvm_unmap_stage2_range(&kvm->arch.mmu, gpa, vm_end - vm_start);
                                        ^
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c: At top level:
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1014:33: warning: 'struct kvm_s2_mmu' declared inside parameter list will not be visible outside of this definition or declaration
    void kvm_free_stage2_pgd(struct kvm_s2_mmu *mmu)
                                    ^~~~~~~~~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1014:6: error: conflicting types for 'kvm_free_stage2_pgd'
    void kvm_free_stage2_pgd(struct kvm_s2_mmu *mmu)
         ^~~~~~~~~~~~~~~~~~~
   In file included from arch/arm/kvm/../../../virt/kvm/arm/mmu.c:28:0:
   arch/arm/include/asm/kvm_mmu.h:68:6: note: previous declaration of 'kvm_free_stage2_pgd' was here
    void kvm_free_stage2_pgd(struct kvm *kvm);
         ^~~~~~~~~~~~~~~~~~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c: In function 'kvm_free_stage2_pgd':
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1016:23: error: dereferencing pointer to incomplete type 'struct kvm_s2_mmu'
     struct kvm *kvm = mmu->kvm;
                          ^~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1021:26: error: passing argument 1 of 'kvm_unmap_stage2_range' from incompatible pointer type [-Werror=incompatible-pointer-types]
      kvm_unmap_stage2_range(mmu, 0, kvm_phys_size(kvm));
                             ^~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:352:6: note: expected 'struct kvm_s2_mmu *' but argument is of type 'struct kvm_s2_mmu *'
    void kvm_unmap_stage2_range(struct kvm_s2_mmu *mmu, phys_addr_t start, u64 size)
         ^~~~~~~~~~~~~~~~~~~~~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1022:7: warning: assignment makes pointer from integer without a cast [-Wint-conversion]
      pgd = READ_ONCE(mmu->pgd);
          ^
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c: At top level:
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1032:37: warning: 'struct kvm_s2_mmu' declared inside parameter list will not be visible outside of this definition or declaration
    static pud_t *stage2_get_pud(struct kvm_s2_mmu *mmu, struct kvm_mmu_memory_cache *cache,
                                        ^~~~~~~~~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c: In function 'stage2_get_pud':
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1035:23: error: dereferencing pointer to incomplete type 'struct kvm_s2_mmu'
     struct kvm *kvm = mmu->kvm;
                          ^~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1035:14: warning: unused variable 'kvm' [-Wunused-variable]
     struct kvm *kvm = mmu->kvm;
                 ^~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c: At top level:
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1051:37: warning: 'struct kvm_s2_mmu' declared inside parameter list will not be visible outside of this definition or declaration
    static pmd_t *stage2_get_pmd(struct kvm_s2_mmu *mmu, struct kvm_mmu_memory_cache *cache,
                                        ^~~~~~~~~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c: In function 'stage2_get_pmd':
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1054:23: error: dereferencing pointer to incomplete type 'struct kvm_s2_mmu'
     struct kvm *kvm = mmu->kvm;
                          ^~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1058:23: error: passing argument 1 of 'stage2_get_pud' from incompatible pointer type [-Werror=incompatible-pointer-types]
     pud = stage2_get_pud(mmu, cache, addr);
                          ^~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1032:15: note: expected 'struct kvm_s2_mmu *' but argument is of type 'struct kvm_s2_mmu *'
    static pud_t *stage2_get_pud(struct kvm_s2_mmu *mmu, struct kvm_mmu_memory_cache *cache,
                  ^~~~~~~~~~~~~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1054:14: warning: unused variable 'kvm' [-Wunused-variable]
     struct kvm *kvm = mmu->kvm;
                 ^~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c: At top level:
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1073:39: warning: 'struct kvm_s2_mmu' declared inside parameter list will not be visible outside of this definition or declaration
    static int stage2_set_pmd_huge(struct kvm_s2_mmu *mmu,
                                          ^~~~~~~~~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c: In function 'stage2_set_pmd_huge':
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1079:23: error: passing argument 1 of 'stage2_get_pmd' from incompatible pointer type [-Werror=incompatible-pointer-types]
     pmd = stage2_get_pmd(mmu, cache, addr);
                          ^~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1051:15: note: expected 'struct kvm_s2_mmu *' but argument is of type 'struct kvm_s2_mmu *'
    static pmd_t *stage2_get_pmd(struct kvm_s2_mmu *mmu, struct kvm_mmu_memory_cache *cache,
                  ^~~~~~~~~~~~~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1112:26: error: passing argument 1 of 'kvm_tlb_flush_vmid_ipa' from incompatible pointer type [-Werror=incompatible-pointer-types]
      kvm_tlb_flush_vmid_ipa(mmu, addr);
                             ^~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:69:13: note: expected 'struct kvm_s2_mmu *' but argument is of type 'struct kvm_s2_mmu *'
    static void kvm_tlb_flush_vmid_ipa(struct kvm_s2_mmu *mmu, phys_addr_t ipa)
                ^~~~~~~~~~~~~~~~~~~~~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c: At top level:
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1121:39: warning: 'struct kvm_s2_mmu' declared inside parameter list will not be visible outside of this definition or declaration
    static int stage2_set_pud_huge(struct kvm_s2_mmu *mmu,
                                          ^~~~~~~~~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c: In function 'stage2_set_pud_huge':
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1125:23: error: dereferencing pointer to incomplete type 'struct kvm_s2_mmu'
     struct kvm *kvm = mmu->kvm;
                          ^~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1128:24: error: passing argument 1 of 'stage2_get_pud' from incompatible pointer type [-Werror=incompatible-pointer-types]
--
                           ^~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1032:15: note: expected 'struct kvm_s2_mmu *' but argument is of type 'struct kvm_s2_mmu *'
    static pud_t *stage2_get_pud(struct kvm_s2_mmu *mmu, struct kvm_mmu_memory_cache *cache,
                  ^~~~~~~~~~~~~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1162:14: warning: unused variable 'kvm' [-Wunused-variable]
     struct kvm *kvm = mmu->kvm;
                 ^~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c: At top level:
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1197:35: warning: 'struct kvm_s2_mmu' declared inside parameter list will not be visible outside of this definition or declaration
    static bool stage2_is_exec(struct kvm_s2_mmu *mmu, phys_addr_t addr)
                                      ^~~~~~~~~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c: In function 'stage2_is_exec':
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1204:32: error: passing argument 1 of 'stage2_get_leaf_entry' from incompatible pointer type [-Werror=incompatible-pointer-types]
     found = stage2_get_leaf_entry(mmu, addr, &pudp, &pmdp, &ptep);
                                   ^~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1159:13: note: expected 'struct kvm_s2_mmu *' but argument is of type 'struct kvm_s2_mmu *'
    static bool stage2_get_leaf_entry(struct kvm_s2_mmu *mmu, phys_addr_t addr,
                ^~~~~~~~~~~~~~~~~~~~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c: At top level:
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1216:34: warning: 'struct kvm_s2_mmu' declared inside parameter list will not be visible outside of this definition or declaration
    static int stage2_set_pte(struct kvm_s2_mmu *mmu,
                                     ^~~~~~~~~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c: In function 'stage2_set_pte':
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1221:23: error: dereferencing pointer to incomplete type 'struct kvm_s2_mmu'
     struct kvm *kvm = mmu->kvm;
                          ^~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1231:23: error: passing argument 1 of 'stage2_get_pud' from incompatible pointer type [-Werror=incompatible-pointer-types]
     pud = stage2_get_pud(mmu, cache, addr);
                          ^~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1032:15: note: expected 'struct kvm_s2_mmu *' but argument is of type 'struct kvm_s2_mmu *'
    static pud_t *stage2_get_pud(struct kvm_s2_mmu *mmu, struct kvm_mmu_memory_cache *cache,
                  ^~~~~~~~~~~~~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1245:23: error: passing argument 1 of 'stage2_dissolve_pud' from incompatible pointer type [-Werror=incompatible-pointer-types]
      stage2_dissolve_pud(mmu, addr, pud);
                          ^~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:127:13: note: expected 'struct kvm_s2_mmu *' but argument is of type 'struct kvm_s2_mmu *'
    static void stage2_dissolve_pud(struct kvm_s2_mmu *mmu, phys_addr_t addr, pud_t *pudp)
                ^~~~~~~~~~~~~~~~~~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1269:23: error: passing argument 1 of 'stage2_dissolve_pmd' from incompatible pointer type [-Werror=incompatible-pointer-types]
      stage2_dissolve_pmd(mmu, addr, pmd);
                          ^~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:108:13: note: expected 'struct kvm_s2_mmu *' but argument is of type 'struct kvm_s2_mmu *'
    static void stage2_dissolve_pmd(struct kvm_s2_mmu *mmu, phys_addr_t addr, pmd_t *pmd)
                ^~~~~~~~~~~~~~~~~~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1293:26: error: passing argument 1 of 'kvm_tlb_flush_vmid_ipa' from incompatible pointer type [-Werror=incompatible-pointer-types]
      kvm_tlb_flush_vmid_ipa(mmu, addr);
                             ^~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:69:13: note: expected 'struct kvm_s2_mmu *' but argument is of type 'struct kvm_s2_mmu *'
    static void kvm_tlb_flush_vmid_ipa(struct kvm_s2_mmu *mmu, phys_addr_t ipa)
                ^~~~~~~~~~~~~~~~~~~~~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1221:14: warning: unused variable 'kvm' [-Wunused-variable]
     struct kvm *kvm = mmu->kvm;
                 ^~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c: In function 'kvm_phys_addr_ioremap':
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1359:34: error: 'struct kvm_arch' has no member named 'mmu'
      ret = stage2_set_pte(&kvm->arch.mmu, &cache, addr, &pte,
                                     ^
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c: At top level:
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1448:35: warning: 'struct kvm_s2_mmu' declared inside parameter list will not be visible outside of this definition or declaration
    static void stage2_wp_pmds(struct kvm_s2_mmu *mmu, pud_t *pud,
                                      ^~~~~~~~~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c: In function 'stage2_wp_pmds':
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1451:23: error: dereferencing pointer to incomplete type 'struct kvm_s2_mmu'
     struct kvm *kvm = mmu->kvm;
                          ^~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c: At top level:
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1478:36: warning: 'struct kvm_s2_mmu' declared inside parameter list will not be visible outside of this definition or declaration
    static void  stage2_wp_puds(struct kvm_s2_mmu *mmu, pgd_t *pgd,
                                       ^~~~~~~~~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c: In function 'stage2_wp_puds':
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1481:23: error: dereferencing pointer to incomplete type 'struct kvm_s2_mmu'
     struct kvm *kvm = mmu->kvm;
                          ^~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1493:20: error: passing argument 1 of 'stage2_wp_pmds' from incompatible pointer type [-Werror=incompatible-pointer-types]
        stage2_wp_pmds(mmu, pud, addr, next);
                       ^~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1448:13: note: expected 'struct kvm_s2_mmu *' but argument is of type 'struct kvm_s2_mmu *'
    static void stage2_wp_pmds(struct kvm_s2_mmu *mmu, pud_t *pud,
                ^~~~~~~~~~~~~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1481:14: warning: unused variable 'kvm' [-Wunused-variable]
     struct kvm *kvm = mmu->kvm;
                 ^~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c: At top level:
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1505:33: warning: 'struct kvm_s2_mmu' declared inside parameter list will not be visible outside of this definition or declaration
    void kvm_stage2_wp_range(struct kvm_s2_mmu *mmu, phys_addr_t addr, phys_addr_t end)
                                    ^~~~~~~~~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c: In function 'kvm_stage2_wp_range':
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1507:23: error: dereferencing pointer to incomplete type 'struct kvm_s2_mmu'
     struct kvm *kvm = mmu->kvm;
                          ^~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1527:19: error: passing argument 1 of 'stage2_wp_puds' from incompatible pointer type [-Werror=incompatible-pointer-types]
       stage2_wp_puds(mmu, pgd, addr, next);
                      ^~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1478:14: note: expected 'struct kvm_s2_mmu *' but argument is of type 'struct kvm_s2_mmu *'
    static void  stage2_wp_puds(struct kvm_s2_mmu *mmu, pgd_t *pgd,
                 ^~~~~~~~~~~~~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c: In function 'kvm_mmu_wp_memory_region':
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1552:32: error: 'struct kvm_arch' has no member named 'mmu'
     kvm_stage2_wp_range(&kvm->arch.mmu, start, end);
                                   ^
>> arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1553:2: error: implicit declaration of function 'kvm_nested_s2_wp'; did you mean 'kvm_reset_vcpu'? [-Werror=implicit-function-declaration]
     kvm_nested_s2_wp(kvm);
     ^~~~~~~~~~~~~~~~
     kvm_reset_vcpu
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c: In function 'kvm_mmu_write_protect_pt_masked':
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1577:32: error: 'struct kvm_arch' has no member named 'mmu'
     kvm_stage2_wp_range(&kvm->arch.mmu, start, end);
                                   ^
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c: At top level:
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1676:13: warning: 'struct kvm_s2_trans' declared inside parameter list will not be visible outside of this definition or declaration
         struct kvm_s2_trans *nested,
                ^~~~~~~~~~~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c: In function 'user_mem_abort':
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1693:37: error: 'struct kvm_vcpu_arch' has no member named 'hw_mmu'
     struct kvm_s2_mmu *mmu = vcpu->arch.hw_mmu;
                                        ^
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1720:6: error: implicit declaration of function 'kvm_is_shadow_s2_fault'; did you mean 'kvm_is_write_fault'? [-Werror=implicit-function-declaration]
     if (kvm_is_shadow_s2_fault(vcpu)) {
         ^~~~~~~~~~~~~~~~~~~~~~
         kvm_is_write_fault
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1721:15: error: dereferencing pointer to incomplete type 'struct kvm_s2_trans'
      ipa = nested->output;
                  ^~
   In file included from include/asm-generic/bug.h:18:0,
                    from arch/arm/include/asm/bug.h:60,
                    from include/linux/bug.h:5,
                    from include/linux/mmdebug.h:5,
                    from include/linux/mm.h:9,
                    from include/linux/mman.h:5,
                    from arch/arm/kvm/../../../virt/kvm/arm/mmu.c:19:
   include/linux/kernel.h:870:2: error: first argument to '__builtin_choose_expr' not a constant
     __builtin_choose_expr(__safe_cmp(x, y), \
     ^
   include/linux/kernel.h:879:19: note: in expansion of macro '__careful_cmp'
    #define min(x, y) __careful_cmp(x, y, <)
                      ^~~~~~~~~~~~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1728:18: note: in expansion of macro 'min'
      max_map_size = min(nested->block_size, max_map_size);
                     ^~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1821:47: error: passing argument 1 of 'stage2_is_exec' from incompatible pointer type [-Werror=incompatible-pointer-types]
      (fault_status == FSC_PERM && stage2_is_exec(mmu, fault_ipa));
                                                  ^~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1197:13: note: expected 'struct kvm_s2_mmu *' but argument is of type 'struct kvm_s2_mmu *'
    static bool stage2_is_exec(struct kvm_s2_mmu *mmu, phys_addr_t addr)
                ^~~~~~~~~~~~~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1833:29: error: passing argument 1 of 'stage2_set_pud_huge' from incompatible pointer type [-Werror=incompatible-pointer-types]
      ret = stage2_set_pud_huge(mmu, memcache, fault_ipa, &new_pud);
                                ^~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1121:12: note: expected 'struct kvm_s2_mmu *' but argument is of type 'struct kvm_s2_mmu *'
    static int stage2_set_pud_huge(struct kvm_s2_mmu *mmu,
               ^~~~~~~~~~~~~~~~~~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1845:29: error: passing argument 1 of 'stage2_set_pmd_huge' from incompatible pointer type [-Werror=incompatible-pointer-types]
      ret = stage2_set_pmd_huge(mmu, memcache, fault_ipa, &new_pmd);
                                ^~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1073:12: note: expected 'struct kvm_s2_mmu *' but argument is of type 'struct kvm_s2_mmu *'
    static int stage2_set_pmd_huge(struct kvm_s2_mmu *mmu,
               ^~~~~~~~~~~~~~~~~~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1857:24: error: passing argument 1 of 'stage2_set_pte' from incompatible pointer type [-Werror=incompatible-pointer-types]
      ret = stage2_set_pte(mmu, memcache, fault_ipa, &new_pte, flags);
                           ^~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1216:12: note: expected 'struct kvm_s2_mmu *' but argument is of type 'struct kvm_s2_mmu *'
    static int stage2_set_pte(struct kvm_s2_mmu *mmu,
               ^~~~~~~~~~~~~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c: In function 'handle_access_fault':
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1886:39: error: 'struct kvm_vcpu_arch' has no member named 'hw_mmu'
     if (!stage2_get_leaf_entry(vcpu->arch.hw_mmu, fault_ipa, &pud, &pmd, &pte))
                                          ^
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c: In function 'kvm_handle_guest_abort':
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1927:22: error: storage size of 'nested_trans' isn't known
     struct kvm_s2_trans nested_trans;
                         ^~~~~~~~~~~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1986:9: error: implicit declaration of function 'kvm_walk_nested_s2'; did you mean 'kvm_inject_nested_irq'? [-Werror=implicit-function-declaration]
      ret = kvm_walk_nested_s2(vcpu, fault_ipa, &nested_trans);
            ^~~~~~~~~~~~~~~~~~
            kvm_inject_nested_irq
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1988:4: error: implicit declaration of function 'kvm_inject_s2_fault'; did you mean 'kvm_inject_pabt'? [-Werror=implicit-function-declaration]
       kvm_inject_s2_fault(vcpu, nested_trans.esr);
       ^~~~~~~~~~~~~~~~~~~
       kvm_inject_pabt
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1993:9: error: implicit declaration of function 'kvm_s2_handle_perm_fault'; did you mean 'handle_mm_fault'? [-Werror=implicit-function-declaration]
      ret = kvm_s2_handle_perm_fault(vcpu, fault_ipa, &nested_trans);
            ^~~~~~~~~~~~~~~~~~~~~~~~
            handle_mm_fault
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1927:22: warning: unused variable 'nested_trans' [-Wunused-variable]
     struct kvm_s2_trans nested_trans;
                         ^~~~~~~~~~~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c: In function 'kvm_unmap_hva_handler':
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:2093:35: error: 'struct kvm_arch' has no member named 'mmu'
     kvm_unmap_stage2_range(&kvm->arch.mmu, gpa, size);
                                      ^
>> arch/arm/kvm/../../../virt/kvm/arm/mmu.c:2094:2: error: implicit declaration of function 'kvm_nested_s2_clear'; did you mean '__nodes_clear'? [-Werror=implicit-function-declaration]
     kvm_nested_s2_clear(kvm);
     ^~~~~~~~~~~~~~~~~~~
     __nodes_clear
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c: In function 'kvm_unmap_hva_range':
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:2101:16: error: 'struct kvm_arch' has no member named 'mmu'
     if (!kvm->arch.mmu.pgd)
                   ^
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c: In function 'kvm_set_spte_handler':
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:2121:27: error: 'struct kvm_arch' has no member named 'mmu'
     stage2_set_pte(&kvm->arch.mmu, NULL, gpa, pte, 0);
                              ^
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c: In function 'kvm_set_spte_hva':
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:2133:16: error: 'struct kvm_arch' has no member named 'mmu'
     if (!kvm->arch.mmu.pgd)
                   ^
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c: In function 'kvm_age_hva_handler':
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:2156:39: error: 'struct kvm_arch' has no member named 'mmu'
     if (!stage2_get_leaf_entry(&kvm->arch.mmu, gpa, &pud, &pmd, &pte))
                                          ^
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c: In function 'kvm_test_age_hva_handler':
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:2181:39: error: 'struct kvm_arch' has no member named 'mmu'
     if (!stage2_get_leaf_entry(&kvm->arch.mmu, gpa, &pud, &pmd, &pte))
                                          ^
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c: In function 'kvm_age_hva':
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:2199:16: error: 'struct kvm_arch' has no member named 'mmu'
     if (!kvm->arch.mmu.pgd)
                   ^
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c: In function 'kvm_test_age_hva':
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:2207:16: error: 'struct kvm_arch' has no member named 'mmu'
     if (!kvm->arch.mmu.pgd)
                   ^
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c: In function 'kvm_arch_prepare_memory_region':
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:2420:36: error: 'struct kvm_arch' has no member named 'mmu'
      kvm_unmap_stage2_range(&kvm->arch.mmu, mem->guest_phys_addr, mem->memory_size);
                                       ^
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:2422:34: error: 'struct kvm_arch' has no member named 'mmu'
      stage2_flush_memslot(&kvm->arch.mmu, memslot);
                                     ^
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c: In function 'kvm_arch_flush_shadow_all':
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:2448:27: error: 'struct kvm_arch' has no member named 'nested_mmus_size'
     for (i = 0; i < kvm->arch.nested_mmus_size; i++) {
                              ^
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:2449:38: error: 'struct kvm_arch' has no member named 'nested_mmus'
      struct kvm_s2_mmu *mmu = &kvm->arch.nested_mmus[i];
                                         ^
   In file included from arch/arm/include/asm/bug.h:60:0,
                    from include/linux/bug.h:5,
                    from include/linux/mmdebug.h:5,
                    from include/linux/mm.h:9,
                    from include/linux/mman.h:5,
                    from arch/arm/kvm/../../../virt/kvm/arm/mmu.c:19:
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:2451:14: error: dereferencing pointer to incomplete type 'struct kvm_s2_mmu'
      WARN_ON(mmu->usage_count > 0);
                 ^
   include/asm-generic/bug.h:122:25: note: in definition of macro 'WARN_ON'
     int __ret_warn_on = !!(condition);    \
                            ^~~~~~~~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:2454:24: error: passing argument 1 of 'kvm_free_stage2_pgd' from incompatible pointer type [-Werror=incompatible-pointer-types]
       kvm_free_stage2_pgd(mmu);
                           ^~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1014:6: note: expected 'struct kvm_s2_mmu *' but argument is of type 'struct kvm_s2_mmu *'
    void kvm_free_stage2_pgd(struct kvm_s2_mmu *mmu)
         ^~~~~~~~~~~~~~~~~~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:2456:17: error: 'struct kvm_arch' has no member named 'nested_mmus'
     kfree(kvm->arch.nested_mmus);
                    ^
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:2457:11: error: 'struct kvm_arch' has no member named 'nested_mmus'
     kvm->arch.nested_mmus = NULL;
              ^
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:2458:11: error: 'struct kvm_arch' has no member named 'nested_mmus_size'
     kvm->arch.nested_mmus_size = 0;
              ^
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:2459:32: error: 'struct kvm_arch' has no member named 'mmu'
     kvm_free_stage2_pgd(&kvm->arch.mmu);
                                   ^
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c: In function 'kvm_arch_flush_shadow_memslot':
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:2469:35: error: 'struct kvm_arch' has no member named 'mmu'
     kvm_unmap_stage2_range(&kvm->arch.mmu, gpa, size);
                                      ^
   cc1: some warnings being treated as errors

vim +1003 arch/arm/kvm/../../../virt/kvm/arm/arm.c

   934	
   935	static int kvm_vcpu_set_target(struct kvm_vcpu *vcpu,
   936				       const struct kvm_vcpu_init *init)
   937	{
   938		unsigned int i;
   939		int phys_target = kvm_target_cpu();
   940	
   941		if (init->target != phys_target)
   942			return -EINVAL;
   943	
   944		/*
   945		 * Secondary and subsequent calls to KVM_ARM_VCPU_INIT must
   946		 * use the same target.
   947		 */
   948		if (vcpu->arch.target != -1 && vcpu->arch.target != init->target)
   949			return -EINVAL;
   950	
   951		/* -ENOENT for unknown features, -EINVAL for invalid combinations. */
   952		for (i = 0; i < sizeof(init->features) * 8; i++) {
   953			bool set = (init->features[i / 32] & (1 << (i % 32)));
   954	
   955			if (set && i >= KVM_VCPU_MAX_FEATURES)
   956				return -ENOENT;
   957	
   958			/*
   959			 * Secondary and subsequent calls to KVM_ARM_VCPU_INIT must
   960			 * use the same feature set.
   961			 */
   962			if (vcpu->arch.target != -1 && i < KVM_VCPU_MAX_FEATURES &&
   963			    test_bit(i, vcpu->arch.features) != set)
   964				return -EINVAL;
   965	
   966			if (set)
   967				set_bit(i, vcpu->arch.features);
   968		}
   969	
   970		vcpu->arch.target = phys_target;
   971	
   972		/* Now we know what it is, we can reset it. */
   973		if (test_bit(KVM_ARM_VCPU_NESTED_VIRT, vcpu->arch.features)) {
   974			int ret;
   975	
 > 976			if (!cpus_have_const_cap(ARM64_HAS_NESTED_VIRT))
   977				return -EINVAL;
   978	
   979			ret = kvm_vcpu_init_nested(vcpu);
   980			if (ret)
   981				return ret;
   982		}
   983	
   984		return kvm_reset_vcpu(vcpu);
   985	}
   986	
   987	
   988	static int kvm_arch_vcpu_ioctl_vcpu_init(struct kvm_vcpu *vcpu,
   989						 struct kvm_vcpu_init *init)
   990	{
   991		int ret;
   992	
   993		ret = kvm_vcpu_set_target(vcpu, init);
   994		if (ret)
   995			return ret;
   996	
   997		/*
   998		 * Ensure a rebooted VM will fault in RAM pages and detect if the
   999		 * guest MMU is turned off and flush the caches as needed.
  1000		 */
  1001		if (vcpu->arch.has_run_once) {
  1002			stage2_unmap_vm(vcpu->kvm);
> 1003			kvm_nested_s2_clear(vcpu->kvm);
  1004		}
  1005	
  1006		vcpu_reset_hcr(vcpu);
  1007	
  1008		/*
  1009		 * Handle the "start in power-off" case.
  1010		 */
  1011		if (test_bit(KVM_ARM_VCPU_POWER_OFF, vcpu->arch.features))
  1012			vcpu_power_off(vcpu);
  1013		else
  1014			vcpu->arch.power_off = false;
  1015	
  1016		return 0;
  1017	}
  1018	

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

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