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KVM: x86: check existance before destroy

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Mostly used for split irqchip mode. In that case, these two things are
not inited at all, so no need to release.

Signed-off-by: Peter Xu <peterx@redhat.com>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
This commit is contained in:
Peter Xu 2017-03-15 16:01:18 +08:00 committed by Paolo Bonzini
parent df630b8c1e
commit 950712eb8e
2 changed files with 6 additions and 0 deletions
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3
arch/x86/kvm/i8259.c
View File

@ -657,6 +657,9 @@ void kvm_pic_destroy(struct kvm *kvm)
{
struct kvm_pic *vpic = kvm->arch.vpic;
if (!vpic)
return;
kvm_io_bus_unregister_dev(vpic->kvm, KVM_PIO_BUS, &vpic->dev_master);
kvm_io_bus_unregister_dev(vpic->kvm, KVM_PIO_BUS, &vpic->dev_slave);
kvm_io_bus_unregister_dev(vpic->kvm, KVM_PIO_BUS, &vpic->dev_eclr);

3
arch/x86/kvm/ioapic.c
View File

@ -635,6 +635,9 @@ void kvm_ioapic_destroy(struct kvm *kvm)
{
struct kvm_ioapic *ioapic = kvm->arch.vioapic;
if (!ioapic)
return;
cancel_delayed_work_sync(&ioapic->eoi_inject);
kvm_io_bus_unregister_dev(kvm, KVM_MMIO_BUS, &ioapic->dev);
kvm->arch.vioapic = NULL;