tree: https://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm.git kvm-arm64/nv-wip-v5.0-rc1 head: 688c386ca096f2c1f2eee386697586c88df5d5bc commit: ef4e8878a94ec44d0f883dfab21ecfb45fe33309 [67/75] fixup! KVM: arm/arm64: nv: Support multiple nested stage 2 mmu structures 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 ef4e8878a94ec44d0f883dfab21ecfb45fe33309 # save the attached .config to linux build tree GCC_VERSION=7.2.0 make.cross ARCH=arm All warnings (new ones prefixed by >>): arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1881:29: 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:1109:12: 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:1893:24: 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:1252:12: 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:1922:39: 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:1963:22: error: storage size of 'nested_trans' isn't known struct kvm_s2_trans nested_trans; ^~~~~~~~~~~~ arch/arm/kvm/../../../virt/kvm/arm/mmu.c:2022:9: 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:2024:4: 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:2029:9: 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:1963:22: 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:2129:35: 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:2130:2: 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:2137:16: 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:2157:27: 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:2169:16: 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:2192:39: 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:2217:39: 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:2235:16: 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:2243:16: 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:2456:36: 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:2458:34: 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:2484:27: 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:2485:38: 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:2487:27: error: dereferencing pointer to incomplete type 'struct kvm_s2_mmu' WARN_ON(atomic_read(&mmu->refcnt)); ^ include/asm-generic/bug.h:122:25: note: in definition of macro 'WARN_ON' int __ret_warn_on = !!(condition); \ ^~~~~~~~~ include/linux/compiler.h:261:22: note: in expansion of macro '__READ_ONCE' #define READ_ONCE(x) __READ_ONCE(x, 1) ^~~~~~~~~~~ >> arch/arm/include/asm/atomic.h:30:24: note: in expansion of macro 'READ_ONCE' #define atomic_read(v) READ_ONCE((v)->counter) ^~~~~~~~~ >> arch/arm/kvm/../../../virt/kvm/arm/mmu.c:2487:11: note: in expansion of macro 'atomic_read' WARN_ON(atomic_read(&mmu->refcnt)); ^~~~~~~~~~~ arch/arm/kvm/../../../virt/kvm/arm/mmu.c:2490:24: 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:1048:6: 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:2492:17: error: 'struct kvm_arch' has no member named 'nested_mmus' kfree(kvm->arch.nested_mmus); ^ arch/arm/kvm/../../../virt/kvm/arm/mmu.c:2493:11: error: 'struct kvm_arch' has no member named 'nested_mmus' kvm->arch.nested_mmus = NULL; ^ arch/arm/kvm/../../../virt/kvm/arm/mmu.c:2494:11: 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:2495:32: 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:2505:35: 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 +/atomic_read +2487 arch/arm/kvm/../../../virt/kvm/arm/mmu.c 2479 2480 void kvm_arch_flush_shadow_all(struct kvm *kvm) 2481 { 2482 int i; 2483 2484 for (i = 0; i < kvm->arch.nested_mmus_size; i++) { 2485 struct kvm_s2_mmu *mmu = &kvm->arch.nested_mmus[i]; 2486 > 2487 WARN_ON(atomic_read(&mmu->refcnt)); 2488 2489 if (!atomic_read(&mmu->refcnt)) 2490 kvm_free_stage2_pgd(mmu); 2491 } 2492 kfree(kvm->arch.nested_mmus); 2493 kvm->arch.nested_mmus = NULL; 2494 kvm->arch.nested_mmus_size = 0; 2495 kvm_free_stage2_pgd(&kvm->arch.mmu); 2496 } 2497 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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