diff options
Diffstat (limited to 'virt/kvm/kvm_main.c')
| -rw-r--r-- | virt/kvm/kvm_main.c | 30 |
1 files changed, 21 insertions, 9 deletions
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c index 897bff3b7df9..7495ce347344 100644 --- a/virt/kvm/kvm_main.c +++ b/virt/kvm/kvm_main.c @@ -738,8 +738,7 @@ static bool make_all_cpus_request(struct kvm *kvm, unsigned int req) bool called = true; struct kvm_vcpu *vcpu; - if (alloc_cpumask_var(&cpus, GFP_ATOMIC)) - cpumask_clear(cpus); + zalloc_cpumask_var(&cpus, GFP_ATOMIC); spin_lock(&kvm->requests_lock); me = smp_processor_id(); @@ -851,6 +850,19 @@ static void kvm_mmu_notifier_invalidate_page(struct mmu_notifier *mn, } +static void kvm_mmu_notifier_change_pte(struct mmu_notifier *mn, + struct mm_struct *mm, + unsigned long address, + pte_t pte) +{ + struct kvm *kvm = mmu_notifier_to_kvm(mn); + + spin_lock(&kvm->mmu_lock); + kvm->mmu_notifier_seq++; + kvm_set_spte_hva(kvm, address, pte); + spin_unlock(&kvm->mmu_lock); +} + static void kvm_mmu_notifier_invalidate_range_start(struct mmu_notifier *mn, struct mm_struct *mm, unsigned long start, @@ -930,6 +942,7 @@ static const struct mmu_notifier_ops kvm_mmu_notifier_ops = { .invalidate_range_start = kvm_mmu_notifier_invalidate_range_start, .invalidate_range_end = kvm_mmu_notifier_invalidate_range_end, .clear_flush_young = kvm_mmu_notifier_clear_flush_young, + .change_pte = kvm_mmu_notifier_change_pte, .release = kvm_mmu_notifier_release, }; #endif /* CONFIG_MMU_NOTIFIER && KVM_ARCH_WANT_MMU_NOTIFIER */ @@ -1714,7 +1727,7 @@ static int kvm_vcpu_fault(struct vm_area_struct *vma, struct vm_fault *vmf) return 0; } -static struct vm_operations_struct kvm_vcpu_vm_ops = { +static const struct vm_operations_struct kvm_vcpu_vm_ops = { .fault = kvm_vcpu_fault, }; @@ -2318,7 +2331,7 @@ static int kvm_vm_fault(struct vm_area_struct *vma, struct vm_fault *vmf) return 0; } -static struct vm_operations_struct kvm_vm_vm_ops = { +static const struct vm_operations_struct kvm_vm_vm_ops = { .fault = kvm_vm_fault, }; @@ -2626,7 +2639,7 @@ static int vcpu_stat_get(void *_offset, u64 *val) DEFINE_SIMPLE_ATTRIBUTE(vcpu_stat_fops, vcpu_stat_get, NULL, "%llu\n"); -static struct file_operations *stat_fops[] = { +static const struct file_operations *stat_fops[] = { [KVM_STAT_VCPU] = &vcpu_stat_fops, [KVM_STAT_VM] = &vm_stat_fops, }; @@ -2704,8 +2717,6 @@ int kvm_init(void *opaque, unsigned int vcpu_size, int r; int cpu; - kvm_init_debug(); - r = kvm_arch_init(opaque); if (r) goto out_fail; @@ -2772,6 +2783,8 @@ int kvm_init(void *opaque, unsigned int vcpu_size, kvm_preempt_ops.sched_in = kvm_sched_in; kvm_preempt_ops.sched_out = kvm_sched_out; + kvm_init_debug(); + return 0; out_free: @@ -2794,7 +2807,6 @@ out_free_0: out: kvm_arch_exit(); out_fail: - kvm_exit_debug(); return r; } EXPORT_SYMBOL_GPL(kvm_init); @@ -2802,6 +2814,7 @@ EXPORT_SYMBOL_GPL(kvm_init); void kvm_exit(void) { tracepoint_synchronize_unregister(); + kvm_exit_debug(); misc_deregister(&kvm_dev); kmem_cache_destroy(kvm_vcpu_cache); sysdev_unregister(&kvm_sysdev); @@ -2811,7 +2824,6 @@ void kvm_exit(void) on_each_cpu(hardware_disable, NULL, 1); kvm_arch_hardware_unsetup(); kvm_arch_exit(); - kvm_exit_debug(); free_cpumask_var(cpus_hardware_enabled); __free_page(bad_page); } |