diff options
Diffstat (limited to 'virt/kvm')
| -rw-r--r-- | virt/kvm/coalesced_mmio.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/virt/kvm/coalesced_mmio.c b/virt/kvm/coalesced_mmio.c index 3710342cf6ad..6855cce3e528 100644 --- a/virt/kvm/coalesced_mmio.c +++ b/virt/kvm/coalesced_mmio.c @@ -175,10 +175,14 @@ int kvm_vm_ioctl_unregister_coalesced_mmio(struct kvm *kvm, { struct kvm_coalesced_mmio_dev *dev, *tmp; + if (zone->pio != 1 && zone->pio != 0) + return -EINVAL; + mutex_lock(&kvm->slots_lock); list_for_each_entry_safe(dev, tmp, &kvm->coalesced_zones, list) - if (coalesced_mmio_in_range(dev, zone->addr, zone->size)) { + if (zone->pio == dev->zone.pio && + coalesced_mmio_in_range(dev, zone->addr, zone->size)) { kvm_io_bus_unregister_dev(kvm, zone->pio ? KVM_PIO_BUS : KVM_MMIO_BUS, &dev->dev); kvm_iodevice_destructor(&dev->dev); |