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authorGregory Haskins <ghaskins@novell.com>2009-06-01 12:54:56 -0400
committerAvi Kivity <avi@redhat.com>2009-09-10 08:32:45 +0300
commit6b66ac1ae3328177305a2600eb85b7446f41fdc9 (patch)
tree6b61633cf186000dcde663f83b1358ed0ef0d440 /arch/x86/kvm/i8254.c
parentd76685c4a074041ed168e0b04dd604c3df5dcaa5 (diff)
KVM: do not register i8254 PIO regions until we are initialized
We currently publish the i8254 resources to the pio_bus before the devices are fully initialized. Since we hold the pit_lock, its probably not a real issue. But lets clean this up anyway. Reported-by: Avi Kivity <avi@redhat.com> Signed-off-by: Gregory Haskins <ghaskins@novell.com> Acked-by: Chris Wright <chrisw@sous-sol.org> Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'arch/x86/kvm/i8254.c')
-rw-r--r--arch/x86/kvm/i8254.c17
1 files changed, 8 insertions, 9 deletions
diff --git a/arch/x86/kvm/i8254.c b/arch/x86/kvm/i8254.c
index e800d2d6626..977af7ab819 100644
--- a/arch/x86/kvm/i8254.c
+++ b/arch/x86/kvm/i8254.c
@@ -604,15 +604,6 @@ struct kvm_pit *kvm_create_pit(struct kvm *kvm, u32 flags)
mutex_lock(&pit->pit_state.lock);
spin_lock_init(&pit->pit_state.inject_lock);
- /* Initialize PIO device */
- kvm_iodevice_init(&pit->dev, &pit_dev_ops);
- kvm_io_bus_register_dev(&kvm->pio_bus, &pit->dev);
-
- if (flags & KVM_PIT_SPEAKER_DUMMY) {
- kvm_iodevice_init(&pit->speaker_dev, &speaker_dev_ops);
- kvm_io_bus_register_dev(&kvm->pio_bus, &pit->speaker_dev);
- }
-
kvm->arch.vpit = pit;
pit->kvm = kvm;
@@ -631,6 +622,14 @@ struct kvm_pit *kvm_create_pit(struct kvm *kvm, u32 flags)
pit->mask_notifier.func = pit_mask_notifer;
kvm_register_irq_mask_notifier(kvm, 0, &pit->mask_notifier);
+ kvm_iodevice_init(&pit->dev, &pit_dev_ops);
+ kvm_io_bus_register_dev(&kvm->pio_bus, &pit->dev);
+
+ if (flags & KVM_PIT_SPEAKER_DUMMY) {
+ kvm_iodevice_init(&pit->speaker_dev, &speaker_dev_ops);
+ kvm_io_bus_register_dev(&kvm->pio_bus, &pit->speaker_dev);
+ }
+
return pit;
}