提交 72bb2fcd 编写于 作者: W Wei Yongjun 提交者: Marcelo Tosatti

KVM: cleanup the failure path of KVM_CREATE_IRQCHIP ioctrl

If we fail to init ioapic device or the fail to setup the default irq
routing, the device register by kvm_create_pic() and kvm_ioapic_init()
remain unregister. This patch fixed to do this.
Signed-off-by: NWei Yongjun <yjwei@cn.fujitsu.com>
Signed-off-by: NAvi Kivity <avi@redhat.com>
上级 1ae77bad
......@@ -543,3 +543,14 @@ struct kvm_pic *kvm_create_pic(struct kvm *kvm)
return s;
}
void kvm_destroy_pic(struct kvm *kvm)
{
struct kvm_pic *vpic = kvm->arch.vpic;
if (vpic) {
kvm_io_bus_unregister_dev(kvm, KVM_PIO_BUS, &vpic->dev);
kvm->arch.vpic = NULL;
kfree(vpic);
}
}
......@@ -75,6 +75,7 @@ struct kvm_pic {
};
struct kvm_pic *kvm_create_pic(struct kvm *kvm);
void kvm_destroy_pic(struct kvm *kvm);
int kvm_pic_read_irq(struct kvm *kvm);
void kvm_pic_update_irq(struct kvm_pic *s);
void kvm_pic_clear_isr_ack(struct kvm *kvm);
......
......@@ -2771,6 +2771,8 @@ long kvm_arch_vm_ioctl(struct file *filp,
if (vpic) {
r = kvm_ioapic_init(kvm);
if (r) {
kvm_io_bus_unregister_dev(kvm, KVM_PIO_BUS,
&vpic->dev);
kfree(vpic);
goto create_irqchip_unlock;
}
......@@ -2782,10 +2784,8 @@ long kvm_arch_vm_ioctl(struct file *filp,
r = kvm_setup_default_irq_routing(kvm);
if (r) {
mutex_lock(&kvm->irq_lock);
kfree(kvm->arch.vpic);
kfree(kvm->arch.vioapic);
kvm->arch.vpic = NULL;
kvm->arch.vioapic = NULL;
kvm_ioapic_destroy(kvm);
kvm_destroy_pic(kvm);
mutex_unlock(&kvm->irq_lock);
}
create_irqchip_unlock:
......
......@@ -401,6 +401,17 @@ int kvm_ioapic_init(struct kvm *kvm)
return ret;
}
void kvm_ioapic_destroy(struct kvm *kvm)
{
struct kvm_ioapic *ioapic = kvm->arch.vioapic;
if (ioapic) {
kvm_io_bus_unregister_dev(kvm, KVM_MMIO_BUS, &ioapic->dev);
kvm->arch.vioapic = NULL;
kfree(ioapic);
}
}
int kvm_get_ioapic(struct kvm *kvm, struct kvm_ioapic_state *state)
{
struct kvm_ioapic *ioapic = ioapic_irqchip(kvm);
......
......@@ -72,6 +72,7 @@ int kvm_apic_match_dest(struct kvm_vcpu *vcpu, struct kvm_lapic *source,
int kvm_apic_compare_prio(struct kvm_vcpu *vcpu1, struct kvm_vcpu *vcpu2);
void kvm_ioapic_update_eoi(struct kvm *kvm, int vector, int trigger_mode);
int kvm_ioapic_init(struct kvm *kvm);
void kvm_ioapic_destroy(struct kvm *kvm);
int kvm_ioapic_set_irq(struct kvm_ioapic *ioapic, int irq, int level);
void kvm_ioapic_reset(struct kvm_ioapic *ioapic);
int kvm_irq_delivery_to_apic(struct kvm *kvm, struct kvm_lapic *src,
......
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