KVM: use vcpu_id instead of bsp_vcpu pointer in kvm_vcpu_is_bsp

Change kvm_vcpu_is_bsp to use vcpu_id instead of bsp_vcpu pointer, which
is only initialized at the end of kvm_vm_ioctl_create_vcpu.

Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
index 0604d56..4ea42c9 100644
--- a/include/linux/kvm_host.h
+++ b/include/linux/kvm_host.h
@@ -538,7 +538,7 @@
 #ifdef CONFIG_KVM_APIC_ARCHITECTURE
 static inline bool kvm_vcpu_is_bsp(struct kvm_vcpu *vcpu)
 {
-	return vcpu->kvm->bsp_vcpu == vcpu;
+	return vcpu->kvm->bsp_vcpu_id == vcpu->vcpu_id;
 }
 #endif
 #endif