provide tests for pit in kernel and irqchip in kernel

KVM can have an in-kernel pit or irqchip. While we don't implement it
yet, having a way for test for it (that always returns zero) will allow us
to reuse code in qemu-kvm that tests for it.

Signed-off-by: Glauber Costa <glommer@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
diff --git a/kvm-all.c b/kvm-all.c
index 7b34c8d..824bb4c 100644
--- a/kvm-all.c
+++ b/kvm-all.c
@@ -63,6 +63,8 @@
 #ifdef KVM_CAP_SET_GUEST_DEBUG
     struct kvm_sw_breakpoint_head kvm_sw_breakpoints;
 #endif
+    int irqchip_in_kernel;
+    int pit_in_kernel;
 };
 
 static KVMState *kvm_state;
@@ -162,6 +164,17 @@
     abort();
 }
 
+int kvm_irqchip_in_kernel(void)
+{
+    return kvm_state->irqchip_in_kernel;
+}
+
+int kvm_pit_in_kernel(void)
+{
+    return kvm_state->pit_in_kernel;
+}
+
+
 int kvm_init_vcpu(CPUState *env)
 {
     KVMState *s = kvm_state;