KVM: Add mini-API for vcpu->requests

Makes it a little more readable and hackable.

Signed-off-by: Avi Kivity <avi@redhat.com>
diff --git a/arch/x86/kvm/lapic.c b/arch/x86/kvm/lapic.c
index 49573c7..77d8c0f 100644
--- a/arch/x86/kvm/lapic.c
+++ b/arch/x86/kvm/lapic.c
@@ -534,7 +534,7 @@
 	struct kvm_vcpu *vcpu = apic->vcpu;
 	struct kvm_run *run = vcpu->run;
 
-	set_bit(KVM_REQ_REPORT_TPR_ACCESS, &vcpu->requests);
+	kvm_make_request(KVM_REQ_REPORT_TPR_ACCESS, vcpu);
 	run->tpr_access.rip = kvm_rip_read(vcpu);
 	run->tpr_access.is_write = write;
 }