KVM: x86/xen: Add CPL to Xen hypercall tracepoint

Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

arch/x86/kvm/trace.h

@@ -113,12 +113,13 @@ TRACE_EVENT(kvm_hv_hypercall_done,
  * Tracepoint for Xen hypercall.
  */
 TRACE_EVENT(kvm_xen_hypercall,
-	TP_PROTO(unsigned long nr, unsigned long a0, unsigned long a1,
-		 unsigned long a2, unsigned long a3, unsigned long a4,
-		 unsigned long a5),
-	    TP_ARGS(nr, a0, a1, a2, a3, a4, a5),
+	    TP_PROTO(u8 cpl, unsigned long nr,
+		     unsigned long a0, unsigned long a1, unsigned long a2,
+		     unsigned long a3, unsigned long a4, unsigned long a5),
+	    TP_ARGS(cpl, nr, a0, a1, a2, a3, a4, a5),
 
 	TP_STRUCT__entry(
+		__field(u8, cpl)
 		__field(unsigned long, nr)
 		__field(unsigned long, a0)
 		__field(unsigned long, a1)
@@ -129,6 +130,7 @@ TRACE_EVENT(kvm_xen_hypercall,
 	),
 
 	TP_fast_assign(
+		__entry->cpl = cpl;
 		__entry->nr = nr;
 		__entry->a0 = a0;
 		__entry->a1 = a1;
@@ -138,8 +140,9 @@ TRACE_EVENT(kvm_xen_hypercall,
 		__entry->a4 = a5;
 	),
 
-	TP_printk("nr 0x%lx a0 0x%lx a1 0x%lx a2 0x%lx a3 0x%lx a4 0x%lx a5 %lx",
-		  __entry->nr, __entry->a0, __entry->a1,  __entry->a2,
+	TP_printk("cpl %d nr 0x%lx a0 0x%lx a1 0x%lx a2 0x%lx a3 0x%lx a4 0x%lx a5 %lx",
+		  __entry->cpl, __entry->nr,
+		  __entry->a0, __entry->a1, __entry->a2,
 		  __entry->a3, __entry->a4, __entry->a5)
 );
 

arch/x86/kvm/xen.c

@@ -1256,7 +1256,7 @@ int kvm_xen_hypercall(struct kvm_vcpu *vcpu)
 	}
 #endif
 	cpl = static_call(kvm_x86_get_cpl)(vcpu);
-	trace_kvm_xen_hypercall(input, params[0], params[1], params[2],
+	trace_kvm_xen_hypercall(cpl, input, params[0], params[1], params[2],
 				params[3], params[4], params[5]);
 
 	/*