diff --git a/arch/x86/kvm/i8254.c b/arch/x86/kvm/i8254.c index a4bf5b45d65a77d55d7c3e672e1bc934faa9f079..5fb6c620180e19ebae73bee9cf6e83e3c65854e8 100644 --- a/arch/x86/kvm/i8254.c +++ b/arch/x86/kvm/i8254.c @@ -645,7 +645,6 @@ static const struct kvm_io_device_ops speaker_dev_ops = { .write = speaker_ioport_write, }; -/* Caller must hold slots_lock */ struct kvm_pit *kvm_create_pit(struct kvm *kvm, u32 flags) { struct kvm_pit *pit; @@ -690,6 +689,7 @@ struct kvm_pit *kvm_create_pit(struct kvm *kvm, u32 flags) kvm_pit_set_reinject(pit, true); + mutex_lock(&kvm->slots_lock); kvm_iodevice_init(&pit->dev, &pit_dev_ops); ret = kvm_io_bus_register_dev(kvm, KVM_PIO_BUS, KVM_PIT_BASE_ADDRESS, KVM_PIT_MEM_LENGTH, &pit->dev); @@ -704,12 +704,14 @@ struct kvm_pit *kvm_create_pit(struct kvm *kvm, u32 flags) if (ret < 0) goto fail_register_speaker; } + mutex_unlock(&kvm->slots_lock); return pit; fail_register_speaker: kvm_io_bus_unregister_dev(kvm, KVM_PIO_BUS, &pit->dev); fail_register_pit: + mutex_unlock(&kvm->slots_lock); kvm_pit_set_reinject(pit, false); kthread_stop(pit->worker_task); fail_kthread: diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 1785415ebff3bf554c3cb77ad42013bdd45c6333..9d6a305936553da8c850de650a3da01dc9a78815 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -3879,7 +3879,7 @@ long kvm_arch_vm_ioctl(struct file *filp, sizeof(struct kvm_pit_config))) goto out; create_pit: - mutex_lock(&kvm->slots_lock); + mutex_lock(&kvm->lock); r = -EEXIST; if (kvm->arch.vpit) goto create_pit_unlock; @@ -3888,7 +3888,7 @@ long kvm_arch_vm_ioctl(struct file *filp, if (kvm->arch.vpit) r = 0; create_pit_unlock: - mutex_unlock(&kvm->slots_lock); + mutex_unlock(&kvm->lock); break; case KVM_GET_IRQCHIP: { /* 0: PIC master, 1: PIC slave, 2: IOAPIC */