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-rw-r--r--virt/kvm/ioapic.c17
1 files changed, 13 insertions, 4 deletions
diff --git a/virt/kvm/ioapic.c b/virt/kvm/ioapic.c
index 3eed61eb4867..dcaf272c26c0 100644
--- a/virt/kvm/ioapic.c
+++ b/virt/kvm/ioapic.c
@@ -185,7 +185,7 @@ static int ioapic_deliver(struct kvm_ioapic *ioapic, int irq)
irqe.dest_mode = 0; /* Physical mode. */
/* need to read apic_id from apic regiest since
* it can be rewritten */
- irqe.dest_id = ioapic->kvm->bsp_vcpu->vcpu_id;
+ irqe.dest_id = ioapic->kvm->bsp_vcpu_id;
}
#endif
return kvm_irq_delivery_to_apic(ioapic->kvm, NULL, &irqe);
@@ -332,9 +332,18 @@ static int ioapic_mmio_write(struct kvm_io_device *this, gpa_t addr, int len,
(void*)addr, len, val);
ASSERT(!(addr & 0xf)); /* check alignment */
- if (len == 4 || len == 8)
+ switch (len) {
+ case 8:
+ case 4:
data = *(u32 *) val;
- else {
+ break;
+ case 2:
+ data = *(u16 *) val;
+ break;
+ case 1:
+ data = *(u8 *) val;
+ break;
+ default:
printk(KERN_WARNING "ioapic: Unsupported size %d\n", len);
return 0;
}
@@ -343,7 +352,7 @@ static int ioapic_mmio_write(struct kvm_io_device *this, gpa_t addr, int len,
spin_lock(&ioapic->lock);
switch (addr) {
case IOAPIC_REG_SELECT:
- ioapic->ioregsel = data;
+ ioapic->ioregsel = data & 0xFF; /* 8-bit register */
break;
case IOAPIC_REG_WINDOW: