KVM: In-kernel I/O APIC model
This allows in-kernel host-side device drivers to raise guest interrupts
without going to userspace.
[avi: fix level-triggered interrupt redelivery on eoi]
[avi: add missing #include]
[avi: avoid redelivery of edge-triggered interrupt]
[avi: implement polarity]
[avi: don't deliver edge-triggered interrupts when unmasking]
[avi: fix host oops on invalid guest access]
Signed-off-by: Yaozu (Eddie) Dong <eddie.dong@intel.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
diff --git a/drivers/kvm/kvm_main.c b/drivers/kvm/kvm_main.c
index 401e3cd..ffbdadd 100644
--- a/drivers/kvm/kvm_main.c
+++ b/drivers/kvm/kvm_main.c
@@ -381,6 +381,7 @@
kvm_io_bus_destroy(&kvm->pio_bus);
kvm_io_bus_destroy(&kvm->mmio_bus);
kfree(kvm->vpic);
+ kfree(kvm->vioapic);
kvm_free_vcpus(kvm);
kvm_free_physmem(kvm);
kfree(kvm);
@@ -2771,8 +2772,14 @@
case KVM_CREATE_IRQCHIP:
r = -ENOMEM;
kvm->vpic = kvm_create_pic(kvm);
- if (kvm->vpic)
- r = 0;
+ if (kvm->vpic) {
+ r = kvm_ioapic_init(kvm);
+ if (r) {
+ kfree(kvm->vpic);
+ kvm->vpic = NULL;
+ goto out;
+ }
+ }
else
goto out;
break;
@@ -2787,7 +2794,9 @@
kvm_pic_set_irq(pic_irqchip(kvm),
irq_event.irq,
irq_event.level);
- /* TODO: IOAPIC */
+ kvm_ioapic_set_irq(kvm->vioapic,
+ irq_event.irq,
+ irq_event.level);
r = 0;
}
break;