tree: https://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm.git kvm-arm64/nv-wip-v5.0-rc1 head: 688c386ca096f2c1f2eee386697586c88df5d5bc commit: 4d8a6cc25603cc92352d861970f1a678411af963 [46/75] KVM: arm64: nv: Move last_vcpu_ran to be per s2 mmu 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 4d8a6cc25603cc92352d861970f1a678411af963 # save the attached .config to linux build tree GCC_VERSION=7.2.0 make.cross ARCH=arm All error/warnings (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:125:8: error: implicit declaration of function 'kvm_init_stage2_mmu'; did you mean 'kvm_free_stage2_pgd'? [-Werror=implicit-function-declaration] ret = kvm_init_stage2_mmu(kvm, &kvm->arch.mmu); ^~~~~~~~~~~~~~~~~~~ kvm_free_stage2_pgd arch/arm/kvm/../../../virt/kvm/arm/arm.c:125:43: error: 'struct kvm_arch' has no member named 'mmu' ret = kvm_init_stage2_mmu(kvm, &kvm->arch.mmu); ^ arch/arm/kvm/../../../virt/kvm/arm/arm.c:129:11: error: 'struct kvm_arch' has no member named 'nested_mmus' kvm->arch.nested_mmus = NULL; ^ arch/arm/kvm/../../../virt/kvm/arm/arm.c:130:11: 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:144:32: 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:343:12: 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:343:38: 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:352:2: 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 In file included from include/asm-generic/percpu.h:7:0, from arch/arm/include/asm/percpu.h:50, from include/linux/percpu.h:13, from include/linux/context_tracking_state.h:5, from include/linux/vtime.h:5, from include/linux/hardirq.h:8, from include/linux/kvm_host.h:10, from arch/arm/kvm/../../../virt/kvm/arm/arm.c:23: arch/arm/kvm/../../../virt/kvm/arm/arm.c:354:36: error: 'struct kvm_vcpu_arch' has no member named 'hw_mmu' last_ran = this_cpu_ptr(vcpu->arch.hw_mmu->last_vcpu_ran); ^ include/linux/percpu-defs.h:219:47: note: in definition of macro '__verify_pcpu_ptr' const void __percpu *__vpp_verify = (typeof((ptr) + 0))NULL; \ ^~~ >> arch/arm/kvm/../../../virt/kvm/arm/arm.c:354:13: note: in expansion of macro 'this_cpu_ptr' last_ran = this_cpu_ptr(vcpu->arch.hw_mmu->last_vcpu_ran); ^~~~~~~~~~~~ In file included from include/linux/compiler_types.h:68:0, from <command-line>:0: arch/arm/kvm/../../../virt/kvm/arm/arm.c:354:36: error: 'struct kvm_vcpu_arch' has no member named 'hw_mmu' last_ran = this_cpu_ptr(vcpu->arch.hw_mmu->last_vcpu_ran); ^ include/linux/compiler-gcc.h:57:34: note: in definition of macro 'RELOC_HIDE' __asm__ ("" : "=r"(__ptr) : "0"(ptr)); \ ^~~ include/linux/percpu-defs.h:249:2: note: in expansion of macro 'SHIFT_PERCPU_PTR' SHIFT_PERCPU_PTR(ptr, my_cpu_offset); \ ^~~~~~~~~~~~~~~~ >> arch/arm/kvm/../../../virt/kvm/arm/arm.c:354:13: note: in expansion of macro 'this_cpu_ptr' last_ran = this_cpu_ptr(vcpu->arch.hw_mmu->last_vcpu_ran); ^~~~~~~~~~~~ arch/arm/kvm/../../../virt/kvm/arm/arm.c:354:36: error: 'struct kvm_vcpu_arch' has no member named 'hw_mmu' last_ran = this_cpu_ptr(vcpu->arch.hw_mmu->last_vcpu_ran); ^ include/linux/compiler-gcc.h:57:34: note: in definition of macro 'RELOC_HIDE' __asm__ ("" : "=r"(__ptr) : "0"(ptr)); \ ^~~ include/linux/percpu-defs.h:249:2: note: in expansion of macro 'SHIFT_PERCPU_PTR' SHIFT_PERCPU_PTR(ptr, my_cpu_offset); \ ^~~~~~~~~~~~~~~~ >> arch/arm/kvm/../../../virt/kvm/arm/arm.c:354:13: note: in expansion of macro 'this_cpu_ptr' last_ran = this_cpu_ptr(vcpu->arch.hw_mmu->last_vcpu_ran); ^~~~~~~~~~~~ arch/arm/kvm/../../../virt/kvm/arm/arm.c:354:36: error: 'struct kvm_vcpu_arch' has no member named 'hw_mmu' last_ran = this_cpu_ptr(vcpu->arch.hw_mmu->last_vcpu_ran); ^ include/linux/compiler-gcc.h:58:10: note: in definition of macro 'RELOC_HIDE' (typeof(ptr)) (__ptr + (off)); \ ^~~ include/linux/percpu-defs.h:249:2: note: in expansion of macro 'SHIFT_PERCPU_PTR' SHIFT_PERCPU_PTR(ptr, my_cpu_offset); \ ^~~~~~~~~~~~~~~~ >> arch/arm/kvm/../../../virt/kvm/arm/arm.c:354:13: note: in expansion of macro 'this_cpu_ptr' last_ran = this_cpu_ptr(vcpu->arch.hw_mmu->last_vcpu_ran); ^~~~~~~~~~~~ arch/arm/kvm/../../../virt/kvm/arm/arm.c:354:36: error: 'struct kvm_vcpu_arch' has no member named 'hw_mmu' last_ran = this_cpu_ptr(vcpu->arch.hw_mmu->last_vcpu_ran); ^ include/linux/compiler-gcc.h:58:10: note: in definition of macro 'RELOC_HIDE' (typeof(ptr)) (__ptr + (off)); \ ^~~ include/linux/percpu-defs.h:249:2: note: in expansion of macro 'SHIFT_PERCPU_PTR' SHIFT_PERCPU_PTR(ptr, my_cpu_offset); \ ^~~~~~~~~~~~~~~~ >> arch/arm/kvm/../../../virt/kvm/arm/arm.c:354:13: note: in expansion of macro 'this_cpu_ptr' last_ran = this_cpu_ptr(vcpu->arch.hw_mmu->last_vcpu_ran); ^~~~~~~~~~~~ arch/arm/kvm/../../../virt/kvm/arm/arm.c:361:39: error: 'struct kvm_vcpu_arch' has no member named 'hw_mmu' u64 vttbr = kvm_get_vttbr(vcpu->arch.hw_mmu); ^ arch/arm/kvm/../../../virt/kvm/arm/arm.c: In function 'kvm_arch_vcpu_put': arch/arm/kvm/../../../virt/kvm/arm/arm.c:389:2: 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:672:26: 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:721:48: 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:956:15: 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:956:15: note: each undeclared identifier is reported only once for each function it appears in arch/arm/kvm/../../../virt/kvm/arm/arm.c:959:8: 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:959:28: 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:962:9: 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:986:3: 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 vim +125 arch/arm/kvm/../../../virt/kvm/arm/arm.c > 23 #include <linux/kvm_host.h> 24 #include <linux/list.h> 25 #include <linux/module.h> 26 #include <linux/vmalloc.h> 27 #include <linux/fs.h> 28 #include <linux/mman.h> 29 #include <linux/sched.h> 30 #include <linux/kvm.h> 31 #include <linux/kvm_irqfd.h> 32 #include <linux/irqbypass.h> 33 #include <linux/sched/stat.h> 34 #include <trace/events/kvm.h> 35 #include <kvm/arm_pmu.h> 36 #include <kvm/arm_psci.h> 37 38 #define CREATE_TRACE_POINTS 39 #include "trace.h" 40 41 #include <linux/uaccess.h> 42 #include <asm/ptrace.h> 43 #include <asm/mman.h> 44 #include <asm/tlbflush.h> 45 #include <asm/cacheflush.h> 46 #include <asm/cpufeature.h> 47 #include <asm/virt.h> 48 #include <asm/kvm_arm.h> 49 #include <asm/kvm_asm.h> 50 #include <asm/kvm_mmu.h> 51 #include <asm/kvm_emulate.h> 52 #include <asm/kvm_coproc.h> 53 #include <asm/sections.h> 54 55 #ifdef REQUIRES_VIRT 56 __asm__(".arch_extension virt"); 57 #endif 58 59 DEFINE_PER_CPU(kvm_cpu_context_t, kvm_host_cpu_state); 60 static DEFINE_PER_CPU(unsigned long, kvm_arm_hyp_stack_page); 61 62 /* Per-CPU variable containing the currently running vcpu. */ 63 static DEFINE_PER_CPU(struct kvm_vcpu *, kvm_arm_running_vcpu); 64 65 /* The VMID used in the VTTBR */ 66 static atomic64_t kvm_vmid_gen = ATOMIC64_INIT(1); 67 static u32 kvm_next_vmid; 68 static DEFINE_SPINLOCK(kvm_vmid_lock); 69 70 static bool vgic_present; 71 72 static DEFINE_PER_CPU(unsigned char, kvm_arm_hardware_enabled); 73 74 static void kvm_arm_set_running_vcpu(struct kvm_vcpu *vcpu) 75 { 76 __this_cpu_write(kvm_arm_running_vcpu, vcpu); 77 } 78 79 DEFINE_STATIC_KEY_FALSE(userspace_irqchip_in_use); 80 81 /** 82 * kvm_arm_get_running_vcpu - get the vcpu running on the current CPU. 83 * Must be called from non-preemptible context 84 */ 85 struct kvm_vcpu *kvm_arm_get_running_vcpu(void) 86 { 87 return __this_cpu_read(kvm_arm_running_vcpu); 88 } 89 90 /** 91 * kvm_arm_get_running_vcpus - get the per-CPU array of currently running vcpus. 92 */ 93 struct kvm_vcpu * __percpu *kvm_get_running_vcpus(void) 94 { 95 return &kvm_arm_running_vcpu; 96 } 97 98 int kvm_arch_vcpu_should_kick(struct kvm_vcpu *vcpu) 99 { 100 return kvm_vcpu_exiting_guest_mode(vcpu) == IN_GUEST_MODE; 101 } 102 103 int kvm_arch_hardware_setup(void) 104 { 105 return 0; 106 } 107 108 void kvm_arch_check_processor_compat(void *rtn) 109 { 110 *(int *)rtn = 0; 111 } 112 113 /** 114 * kvm_arch_init_vm - initializes a VM data structure 115 * @kvm: pointer to the KVM struct 116 */ 117 int kvm_arch_init_vm(struct kvm *kvm, unsigned long type) 118 { 119 int ret; 120 121 ret = kvm_arm_setup_stage2(kvm, type); 122 if (ret) 123 return ret; 124 > 125 ret = kvm_init_stage2_mmu(kvm, &kvm->arch.mmu); 126 if (ret) 127 return ret; 128 129 kvm->arch.nested_mmus = NULL; 130 kvm->arch.nested_mmus_size = 0; 131 132 ret = create_hyp_mappings(kvm, kvm + 1, PAGE_HYP); 133 if (ret) 134 goto out_free_stage2_pgd; 135 136 kvm_vgic_early_init(kvm); 137 138 /* The maximum number of VCPUs is limited by the host's GIC model */ 139 kvm->arch.max_vcpus = vgic_present ? 140 kvm_vgic_get_max_vcpus() : KVM_MAX_VCPUS; 141 142 return ret; 143 out_free_stage2_pgd: 144 kvm_free_stage2_pgd(&kvm->arch.mmu); 145 return ret; 146 } 147 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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